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technetium tc 99m pentetate

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Description

Technetium Tc 99m Pentetate: A technetium imaging agent used in renal scintigraphy, computed tomography, lung ventilation imaging, gastrointestinal scintigraphy, and many other procedures which employ radionuclide imaging agents. [Medical Subject Headings (MeSH), National Library of Medicine, extracted Dec-2023]

Cross-References

ID SourceID
PubMed CID166744
MeSH IDM0024893

Synonyms (11)

Synonym
technetate(1-)-99tc, (n-(2-(bis((carboxy-kappao)methyl)amino-kappan)ethyl)-n-(2-(((carboxy-kappao)methyl)(carboxymethyl)amino-kappan)ethyl)glycinato(5-)-kappan,kappao)-
technetium-99mtc-dtpa
(n-(2-(bis((carboxy-kappao)methyl)amino-kappan)ethyl)-n-(2-(((carboxy-kappao)methyl)(carboxymethyl)amino-kappan)ethyl)glycinato(5-)-kappan,kappao)technetate(1-)-99tc
technetium-99mtc-diethylenetriaminepentaacetic acid
technetium tc 99m pentetate
12775-34-7
technetium tc-99m pentetic acid
99mtc-dtpa
38ihl67r32 ,
unii-38ihl67r32
DTXSID101026662

Research Excerpts

Toxicity

ExcerptReferenceRelevance
" To determine whether an in vivo treatment with pentoxifylline (PTX) can prevent the toxic effects of CsA, three groups of rats were studied."( Beneficial effects of pentoxifylline on cyclosporine-induced nephrotoxicity.
Boz, A; Kaputlu, I; Karayalçin, B; Sadan, G, 1997
)
0.3
" These results suggest that one VCM is a safe procedure."( The safety of one, or repeated, vital capacity maneuvers during general anesthesia.
Hedenstierna, G; Högman, M; Lemoine, R; Magnusson, L; Tenling, A; Tydén, H, 2000
)
0.31
"This study demonstrates in an animal model that inflating the lung once or repeatedly to the vital capacity is a safe procedure."( The safety of one, or repeated, vital capacity maneuvers during general anesthesia.
Hedenstierna, G; Högman, M; Lemoine, R; Magnusson, L; Tenling, A; Tydén, H, 2000
)
0.31
" As chemotherapeutic drugs present important toxic effects, we studied the vincristine effect in the mass of organs and are trying to develop a model to evaluate the action of chemotherapeutic drug using the biodistribution of radiopharmaceuticals."( Model to evaluate the toxic effect of drugs: vincristine effect in the mass of organs and in the distribution of radiopharmaceuticals in mice.
Bernardo-Filho, M; Freitas, RS; Gomes, ML; Mattos, DM, 2001
)
0.31
"Amiodarone is a potent antiarrhythmic agent that is limited in clinical use by its adverse effects, including potentially life threatening amiodarone-induced pulmonary toxicity (AIPT)."( Value of technetium-99m diethyltriamine pentaaceticacid radioaerosol inhalation lung scintigraphy for the stage of amiodarone-induced pulmonary toxicity.
Altaner, S; Altun, A; Berkada, S; Durmus-Altun, G; Ozbay, G; Sami Salihoglu, Y, 2004
)
0.32
" Literature searches were conducted via Medline/PubMed using the following terms: Tc-99m DTPA/pentetate, CSF, cisternography, intrathecal, and adverse reactions."( Special safety considerations in preparation of technetium Tc-99m DTPA for cerebrospinal fluid-related imaging procedures.
Ponto, JA,
)
0.13
"Articles considered appropriate for review included all human research studies, reviews, case reports, abstracts, and letters published in English on Tc-99m DTPA use in CSF-related imaging procedures, especially with regard to safety or adverse reactions."( Special safety considerations in preparation of technetium Tc-99m DTPA for cerebrospinal fluid-related imaging procedures.
Ponto, JA,
)
0.13
"All information related to safety precautions and adverse reactions associated with Tc-99m DTPA injected intrathecally or otherwise used for CSF-related imaging procedures were considered."( Special safety considerations in preparation of technetium Tc-99m DTPA for cerebrospinal fluid-related imaging procedures.
Ponto, JA,
)
0.13
" In addition, Common Terminology Criteria for Adverse Events (CTCAE) v3."( Accurate assessment of long-term nephrotoxicity after peptide receptor radionuclide therapy with (177)Lu-octreotate.
Ahmadzadehfar, H; Biersack, HJ; Ezziddin, K; Ezziddin, S; Haslerud, T; Nagarajah, J; Pape, UF; Reichman, K; Sabet, A, 2014
)
0.4

Pharmacokinetics

ExcerptReferenceRelevance
" Tc(DTPA) and Gd(DTPA)2- had nearly identical pharmacokinetic profiles in plasma and the rate constants were essentially the same."( Pharmacokinetic analysis of blood distribution of intravenously administered 153Gd-labeled Gd(DTPA)2- and 99mTc(DTPA) in rats.
Covell, DG; Eaton, S; Eckelman, WC; Nair, S; Tweedle, MF; Wedeking, P, 1990
)
0.28
" 492 Da) biological half-life (t1/2), BAL plasminogen activator, and BAL leukotriene B4 (LTB4)."( Piriprost pretreatment attenuates the smoke-induced increase in 99mTcDTPA lung clearance.
Devine, LC; Grad, R; Hubbard, AK; Lantz, RC; Lemen, RJ; Lentz, LA; Quan, SF; Sobonya, RE; Witten, ML,
)
0.13
" The pulmonary clearance rate expressed as the half-life time (T1/2) of [99Tcm]DTPA was at VP 80/0."( Pulmonary clearance of inhaled [99Tcm]DTPA: effects of ventilation pattern.
Evander, E; Jonson, B; Wollmer, P, 1990
)
0.28
" The mean half-life of the tracer in the lungs in Groups I-IV was 60, 58, 59 and 26 min, respectively."( Pulmonary clearance of 99mTc-DTPA during halothane anaesthesia.
Bakker, W; Bos, JA; Krenning, EP; Lachmann, B; Schairer, W; Wollmer, P, 1990
)
0.28
" The results indicated that the Tmax value was less than 2 minutes, one week after transplantation."( Acute-phase kidney transplants show early peak appearance in Tc-99m DTPA renogram.
Eto, K; Ishibashi, M; Miyahara, S; Morita, S; Noda, S; Nomura, G; Ohtake, H, 1990
)
0.28
" The measured half-life time (T1/2) of the 99mTc-DTPA (mean (SD] was: group 1, 28 (7."( Effects of high frequency jet ventilation on the pulmonary clearance of 99mTc-DTPA in respiratory failure in rabbits.
Bakker, WH; Bos, JA; Lachmann, B; Schaffers, JT; Schairer, W; Tenbrinck, R; TenHave-Opbroek, AA; Wollmer, P, 1989
)
0.28
" For a 60-min observation period, the biological half-life for clearance of 99mTc-DTPA from both lungs was 66 +/- 11 (SD) min."( Lung clearance of inhaled 99mTc-DTPA in the dog.
Hyde, RW; Ivanovich, M; Morrow, PE; Oberdörster, G; Utell, MJ; Weber, DA, 1984
)
0.27
"To determine whether a portable sodium iodide (NaI) probe could provide a valid measure of the pulmonary half-life (T1/2) of aerosolized technetium-99m-diethylenetriaminepentaacetate (99mTc-DTPA, mol wt = 492) in small chests, we measured pulmonary clearance in rabbits using a gamma-scintillation camera and the portable probe."( Measurement of pulmonary clearance of radioaerosol using a portable sodium iodide probe.
Coates, G; Jefferies, AL; O'Brodovich, HM; Webber, CE, 1984
)
0.27
" After vehicle, the clearance was monoexponential with a half-life of 153 min."( Biexponential pulmonary clearance of 99mTc-DTPA induced by detergent aerosol.
Evander, E; John, J; Jonson, B; Sörnmo, L; Valind, S; Wollmer, P, 1994
)
0.29
" We found the clearance of 99mTc-DTPA to be well described by a mono-exponential equation in 14 non-smokers, the half-life being 66 +/- 17 min (mean +/- SD)."( Biphasic pulmonary clearance of 99mTc-DTPA in smokers.
Evander, E; Wollmer, P, 1994
)
0.29
" Clearance was measured for 3 h and the kinetics was analysed by fitting mono- and biexponential equations to the clearance curve and was expressed as a half-life (T 1/2)."( Effect of detergent combined with large tidal volume ventilation on alveolocapillary permeability.
Evander, E; John, J; Johnson, B; Taskar, V; Wollmer, P, 1996
)
0.29
"99mTc-DTPA cleared from the lungs with a half-life of 71 +/- 22 min in the control animals, 21."( Pulmonary clearance of 99mTc-DTPA in experimental surfactant dysfunction treated with surfactant instillation.
John, J; Lachmann, B; Nilsson, K; Robertson, B; Wollmer, P, 1997
)
0.3
" Seven of the non-smokers had a monoexponential clearance of [99mTc]DTPA with a mean half-life of 66 +/- 18 min."( Pulmonary clearance of [99mTc]DTPA and [99mTc]albumin in smokers.
Evander, E; Nilsson, K; Wollmer, P, 1997
)
0.3
" The mean values for the effective half-life of the pulmonary clearance of 99mTc-DTPA aerosol were below the normal range in all 9 patients, and lower than the values obtained previously for patients on a long-term amiodarone regimen without side effects."( Gallium-67 lung imaging and pulmonary clearance of 99mTc-DTPA aerosol in patients with amiodarone pneumonitis.
Camargo, EE; Cukier, A; Meneghetti, JC; Soares Júnior, J; Teixeira, LR; Terra-Filho, M; Vargas, FS, 1996
)
0.29
"The aim of this study was to compare measured glomerular filtration rate (GFR) with estimates of GFR derived from the population pharmacokinetic methods of Martin and Wright, and the creatinine clearance (CrCl) estimates of Cockcroft and Gault, and Jelliffe."( A comparison of bedside renal function estimates and measured glomerular filtration rate (Tc99mDTPA clearance) in cancer patients.
Dooley, MJ; Poole, SG; Rischin, D, 2002
)
0.31
" Pharmacokinetic parameters determined were Cmax, tmax, AUC(0, infinity ) and t1/2."( Pharmacokinetics and gamma scintigraphy evaluation of two enteric coated formulations of didanosine in healthy volunteers.
Damle, B; Doll, W; Knupp, C; Ullah, I; Wiley, G, 2002
)
0.31
"Modeling of pharmacokinetic parameters and pharmacodynamic actions requires knowledge of the arterial blood concentration."( Physiologically based pharmacokinetic modeling of arterial - antecubital vein concentration difference.
Levitt, DG, 2004
)
0.32
"A physiologically based pharmacokinetic (PBPK) model for the tissues drained by the antecubital vein (referred to as "arm") is developed."( Physiologically based pharmacokinetic modeling of arterial - antecubital vein concentration difference.
Levitt, DG, 2004
)
0.32
"To characterize the pharmacokinetic disposition of carboplatin and determine whether glomerular filtration rate (GFR) could be used to predict carboplatin clearance and myelotoxic effects in cats with tumors."( Effect of glomerular filtration rate on clearance and myelotoxicity of carboplatin in cats with tumors.
Bailey, DB; Dykes, NL; Erb, HN; Hoopes, PJ; Page, RL; Rassnick, KM, 2004
)
0.32
" Plasma platinum concentrations were measured via atomic absorption spectrophotometry, and pharmacokinetic analysis was performed."( Effect of glomerular filtration rate on clearance and myelotoxicity of carboplatin in cats with tumors.
Bailey, DB; Dykes, NL; Erb, HN; Hoopes, PJ; Page, RL; Rassnick, KM, 2004
)
0.32
" Mucociliary clearance rates in terms of retention ratio after 1 hour and radioactivity half-life for each lung was lowest in the water-pipe smokers compared to others."( [The effects of water-pipe, cigarette and passive smoking on mucociliary clearance].
Aydin, A; Ceylan, E; Durak, H; Eminoğlu, O; Güven, H; Köseoğlu, N; Uçan, ES, 2006
)
0.33
" Twelve rats were scanned for 2 h to estimate uptake of (99m)Tc radioactivity with respect to time for the pharmacokinetic analysis."( Micro-SPECT/CT-based pharmacokinetic analysis of 99mTc-diethylenetriaminepentaacetic acid in rats with blood-brain barrier disruption induced by focused ultrasound.
Lin, GL; Lin, HH; Liu, RS; Teng, MC; Wang, HE; Wong, TT; Yang, FY, 2011
)
0.37
"This study demonstrates that (99m)Tc-DTPA micro-SPECT/CT can be used for the pharmacokinetic analysis of BBB-D induced by FUS."( Micro-SPECT/CT-based pharmacokinetic analysis of 99mTc-diethylenetriaminepentaacetic acid in rats with blood-brain barrier disruption induced by focused ultrasound.
Lin, GL; Lin, HH; Liu, RS; Teng, MC; Wang, HE; Wong, TT; Yang, FY, 2011
)
0.37
"The prepared immediate release and controlled release pastilles were subjected to in vivo pharmacokinetic studies in rats."( Evaluation of in vivo behavior of controlled and pulsatile release pastilles using pharmacokinetic and γ-scintigraphic techniques.
Chakraborty, S; Mishra, B; Shukla, D, 2012
)
0.38
"The in vivo pharmacokinetic study of controlled release pastille formulation showed significant decrease in C(max) with increase in t(max), which indicates that the effect of dosage form would last for longer duration."( Evaluation of in vivo behavior of controlled and pulsatile release pastilles using pharmacokinetic and γ-scintigraphic techniques.
Chakraborty, S; Mishra, B; Shukla, D, 2012
)
0.38
" A pharmacokinetic analysis of the resulting blood concentration versus time profiles was performed."( Lung deposition and pharmacokinetics of nebulized cyclosporine in lung transplant patients.
Corcoran, TE; Dilly, S; Johnson, BA; Niven, R; Verret, W, 2014
)
0.4
"Assessment of volume of distribution (VD) and half-life (T1/2) values during glomerular filtration rate (GFR) investigations is a useful quality control check."( (99m)Tc-DTPA volume of distribution, half-life and glomerular filtration rate in normal adults.
Fleming, JS; Holness, JL; Malaroda, AL; Warwick, JM, 2013
)
0.39
"We compared CL values derived from two plasma concentration curve area methods - (a) biexponential fitting [CL (E2)] and (b) Tikhonov adaptively regularized gamma variate fitting [CL (Tk-GV)] - for 4 versus 8 h time samplings from 412 Tc-DTPA studies in 142 patients, mostly paediatric patients, with suspected fluid disturbances."( Accurate and precise plasma clearance measurement using four 99mTc-DTPA plasma samples over 4 h.
Babyn, PS; Barnfield, MC; Burniston, MT; Murray, AW; Waller, ML; Wanasundara, SN; Wesolowski, CA; Wesolowski, MJ, 2016
)
0.43
"We present a model that generalizes the apparent volume of distribution and half-life as functions of time following intravenous bolus injection."( Time Varying Apparent Volume of Distribution and Drug Half-Lives Following Intravenous Bolus Injections.
Babyn, PS; Wanasundara, SN; Wesolowski, CA; Wesolowski, MJ, 2016
)
0.43

Compound-Compound Interactions

ExcerptReferenceRelevance
" When detergent was combined with LTVV, clearance was bicompartmental as with detergent alone, with the same size of the fast fraction."( Effect of detergent combined with large tidal volume ventilation on alveolocapillary permeability.
Evander, E; John, J; Johnson, B; Taskar, V; Wollmer, P, 1996
)
0.29
"Gastrointestinal (GI) bleeding scintigraphy in combination with single-photon emission computed tomography/computed tomography (SPECT/CT) remains to be studied in detail."( Diagnostic ability of (99m)Tc-HSA-DTPA scintigraphy in combination with SPECT/CT for gastrointestinal bleeding.
Higashiyama, S; Katayama, Y; Kawabe, J; Kawahata, H; Kawamura, E; Kotani, K; Shiomi, S; Yamanaga, T; Yoshida, A, 2014
)
0.4
"GI bleeding scintigraphy in combination with SPECT/CT is a noninvasive and useful tool for the examination of GI bleeding."( Diagnostic ability of (99m)Tc-HSA-DTPA scintigraphy in combination with SPECT/CT for gastrointestinal bleeding.
Higashiyama, S; Katayama, Y; Kawabe, J; Kawahata, H; Kawamura, E; Kotani, K; Shiomi, S; Yamanaga, T; Yoshida, A, 2014
)
0.4

Bioavailability

ExcerptReferenceRelevance
" Twenty-four-hour excretion reflects the amount of aerosol cleared by absorption, while two-hour excretion is a quantitative measure of the aerosol absorption rate from the epithelium into blood."( Urine excretion of inhaled technetium-99m-DTPA: an alternative method to assess lung epithelial transport.
Klech, H; Köhn, H; König, B; Mostbeck, A; Pohl, W, 1990
)
0.28
"During the last few years a number of factors affecting the measurement of the rate of absorption of 99mTc-DTPA across the alveolar-capillary membrane have been identified."( Evaluation of lung epithelial permeability.
Dolovich, M; Jordana, M; Newhouse, MI, 1987
)
0.27
"The rate of absorption across the alveolar-capillary membrane of inhaled 99mTc-DTPA and the concentration of albumin in the bronchoalveolar lavage (BAL) fluid were characterized in a rat model of bleomycin-induced pulmonary fibrosis."( Solute movement across the alveolar-capillary membrane after intratracheally administered bleomycin in rats.
Befus, D; Dolovich, M; Gauldie, J; Irving, LB; Jordana, M; Newhouse, MT; Tomioka, M, 1988
)
0.27
"Several acute and chronic conditions that alter the integrity of the pulmonary epithelium increased the rate of absorption or clearance into the circulation of small solutes deposited in the alveoli."( Lung clearance of 99mTc-DTPA in patients with acute lung injury and pulmonary edema.
Coates, G; Dolovich, M; O'Brodovich, H, 1988
)
0.27
" These data also agree with the view that the epithelial lining determines the rate of absorption and is responsible for the valve-like function that allows lumenal entry of extravasated bulk plasma without any increased inward perviousness."( Effects of hydrogen peroxide on the guinea-pig tracheobronchial mucosa in vivo.
Erjefält, I; Erjefält, JS; Greiff, L; Persson, CG; Wollmer, P, 1999
)
0.3
"The aims of the study were to evaluate the bioavailability of didanosine from the encapsulated enteric coated beads (1 x 200 mg; enteric beads) and enteric coated mini-tablets (4 x 50 mg; enteric tablet) formulations relative to the chewable/dispersible buffered tablets (2 x 100 mg; buffered tablet), and to study their rate of gastrointestinal transit."( Pharmacokinetics and gamma scintigraphy evaluation of two enteric coated formulations of didanosine in healthy volunteers.
Damle, B; Doll, W; Knupp, C; Ullah, I; Wiley, G, 2002
)
0.31
"7 h), and increased bioavailability (+13%; +44%) and dose-adjusted Cmax (+54%; +103%)."( Effects of sodium taurocholate on the absorption of inhaled 99mTc-DTPA.
Bengtsson, T; Bondesson, E; Nilsson, LE; Wollmer, P, 2006
)
0.33
"To characterize the absorption kinetics and bioavailability of an inhaled hydrophilic solute deposited at various sites within the airways."( Site of deposition and absorption of an inhaled hydrophilic solute.
Bengtsson, T; Bondesson, E; Nilsson, LE; Wollmer, P, 2007
)
0.34
"3 h) and the bioavailability was 70% (mean ratio (Pari : UltraVent): 101% with 95% CI 90%, 115%)."( Site of deposition and absorption of an inhaled hydrophilic solute.
Bengtsson, T; Bondesson, E; Nilsson, LE; Wollmer, P, 2007
)
0.34
" Despite different intrapulmonary radioaerosol deposition patterns, as verified by gamma scintigraphy, no differences in (99m)Tc-DTPA absorption kinetics or bioavailability were detected."( Site of deposition and absorption of an inhaled hydrophilic solute.
Bengtsson, T; Bondesson, E; Nilsson, LE; Wollmer, P, 2007
)
0.34
"This study evaluated the relative bioavailability of levetiracetam in various regions of the GI tract using a noninvasive, remote-controlled capsule device providing targeted drug delivery, relative to that after oral administration, and explored the drug's absorption characteristics in healthy volunteers."( Assessment of levetiracetam bioavailability from targeted sites in the human intestine using remotely activated capsules and gamma scintigraphy: Open-label, single-dose, randomized, four-way crossover study in healthy male volunteers.
Connor, A; Otoul, C; Sargentini-Maier, ML; Stockis, A; Wilding, I; Wray, H, 2010
)
0.36
" Values for bioavailability in the proximal small bowel, distal small bowel, and ascending colon relative to the tablet were 98."( Assessment of levetiracetam bioavailability from targeted sites in the human intestine using remotely activated capsules and gamma scintigraphy: Open-label, single-dose, randomized, four-way crossover study in healthy male volunteers.
Connor, A; Otoul, C; Sargentini-Maier, ML; Stockis, A; Wilding, I; Wray, H, 2010
)
0.36
"After delivery in the proximal small bowel, distal small bowel, or ascending colon, the systemic bioavailability of levetiracetam (AUC), but not C(max) and T(max), appeared comparable to that after oral administration and thus appeared site independent in this small group of healthy fasting men."( Assessment of levetiracetam bioavailability from targeted sites in the human intestine using remotely activated capsules and gamma scintigraphy: Open-label, single-dose, randomized, four-way crossover study in healthy male volunteers.
Connor, A; Otoul, C; Sargentini-Maier, ML; Stockis, A; Wilding, I; Wray, H, 2010
)
0.36
" Then the morphologic volume of liver parenchyma (MLV), functional liver volume (FLV) and the hepatic cell absorption rate constant (GSA-K) were calculated."( [Assessment of hepatic reserve function of cirrhosis liver using dynamic SPECT (99m)Tc-galactosyl human serum albumin scintigraphy].
Cai, SW; Chen, YM; Dong, JH; Duan, WD; Li, C; Liu, HS; Liu, ZW; Shao, MZ; Tian, JH; Xiang, CH; Zhang, JM, 2013
)
0.39
" A set of parameters reflecting liver function including morphological liver volume, functional liver volume, functional liver density (FLD), and the drug absorption rate constant for hepatic cells (GSA-K) was calculated."( Three-Dimensional Quantitative Evaluation of the Segmental Functional Reserve in the Cirrhotic Liver Using Multi-Modality Imaging.
Chen, Y; Dong, J; Duan, W; Gong, L; Huang, X; Li, A; Li, C; Shao, M; Xiang, C; Zhang, A, 2016
)
0.43
" However, the polyphenol due to its rapid and extensive metabolism exhibits low bioavailability in vivo."( Physiological uptake and retention of radiolabeled resveratrol loaded gold nanoparticles (
Chadha, VD; Dhawan, DK; Kamal, R, 2018
)
0.48

Dosage Studied

ExcerptRelevanceReference
" The timing of diuretic administration, state of hydration, and furosemide dosage appear to be the key methodologic variables."( Diuretic renography: concepts and controversies.
Sarkar, SD, 1992
)
0.28
" However, owing to the inherent inaccuracy in any creatinine-based method, if the prediction is within 20% of the value at which dose reduction of cisplatin is considered, an isotopically determined GFR should be carried out to optimise dosage adjustments."( Measurement of glomerular function during cisplatin therapy.
Fleming, JS; Juer, L; Waller, DG, 1991
)
0.28
"05) greater at all dosage levels with the Turret."( Delivery of albuterol and ipratropium bromide from two nebulizer systems in chronic stable asthma. Efficacy and pulmonary deposition.
Bloom, R; Clarke, SW; Johnson, MA; Newman, SP; Talaee, N, 1989
)
0.28
"The dosage form (drop or spray) and site of administration (dorsal or ventral surface of the nostril) profoundly affect the distribution and clearance of a gamma-emitting 99mTc-labeled diethylenetriamine pentaacetic acid (99mTc-DTPA) solution in dogs."( Nasal delivery of a vasopressin antagonist in dogs.
Kinter, LB; Liversidge, GG; Sternson, WL; Wilson, CG, 1988
)
0.27
"We investigated the dose-response effect of positive end-expiratory pressure (PEEP) and increased lung volume on the pulmonary clearance rate of aerosolized technetium-99m-labeled diethylenetriaminepentaacetic acid (99mTc-DTPA)."( Relationship of end-expiratory pressure, lung volume, and 99mTc-DTPA clearance.
Cooper, JA; Line, BR; Malik, AB; van der Zee, H, 1987
)
0.27
" This is the first demonstration of a dose-response relationship between carboxyhaemoglobin and an increased permeability of the lungs in man and provides a technique for identifying the roles of carbon monoxide and other cigarette smoke constituents in causing increased pulmonary epithelial permeability."( Carboxyhaemoglobin and pulmonary epithelial permeability in man.
Jones, JG; Minty, BD; Royston, D; Royston, JP, 1983
)
0.27
" Each subject was examined in basal conditions and after dosing with carprofen and ASA in random sequence with a 10-day washout period between tests."( Antiinflammatory drugs and gastric emptying. A comparison between acetylsalicylic acid and carprofen.
Calbiani, B; Cisternino, M; Colombi-Zinelli, L; Papa, N; Rinetti, M; Ugolotti, G, 1982
)
0.26
" Lowering the dosage of CyA permitted the continuation of therapy, and all 9 patients are alive after 8 to 14 months."( 99mTc-DTPA and 131I-hippuran findings in liver transplant recipients treated with cyclosporin A.
Iwatsuki, S; Klingensmith, WC; Klintmalm, GB; Schröter, GP; Starzl, TE, 1982
)
0.26
" The half-time clearance of 99mTc-DTPA was comparable in both patient groups and was not related to the total administered radioiodine dosage or to the radiation dose delivered to the lungs."( Effect of radioiodine therapy on pulmonary alveolar-capillary membrane integrity.
Baghel, NS; Rajashekharrao, B; Samuel, AM; Unnikrishnan, TP, 1995
)
0.29
" Thirty minutes after dosing each subject was given 375 ml of 99mTc-DTPA (diethylene triaminepentaacetic acid) labelled Clinifeed-ISO."( Ranitidine bismuth citrate and ranitidine do not affect gastric emptying of a radio-labelled liquid meal.
Bedding, AW; Farr, SJ; Forster, ER; Parikh, R; Smith, JT; Sweetland, J, 1994
)
0.29
" This finding suggests that adjustments in drug dosage may not be required, using various intraosseous locations as an alternative to peripheral intravenous drug therapy."( Pharmacokinetics from multiple intraosseous and peripheral intravenous site injections in normovolemic and hypovolemic pigs.
Gravelle, D; Kissoon, N; Mattar, A; Morrissey, G; Rieder, MJ; Warren, DW, 1994
)
0.29
"This study was designed to compare by scintigraphy the gastric retention of a new dosage form of sucralfate as gel (Gastrogel) with that of sucralfate suspension in 25 patients with upper gastrointestinal symptoms referred for routine endoscopy."( Gastric retention of sucralfate gel and suspension in upper gastrointestinal diseases.
Barbara, L; Brunetti, G; Colombo, P; Corbelli, C; Levorato, M; Menegatti, M; Miglioli, M; Mulè, P; Vaira, D, 1993
)
0.29
"The transit of pharmaceutical dosage forms through the colon has been shown to be highly variable."( Characterization of colonic transit of nondisintegrating tablets in healthy subjects.
Davis, SS; Price, JM; Wilding, IR, 1993
)
0.29
" Because renal excretion is the major variable determining the pharmacokinetics of this drug, a dosing formula based on glomerular filtration rate (GFR) has been proposed and is being increasingly used in carboplatin dosing."( Carboplatin dosing based on measurement of renal function--experience at the Peter MacCallum Cancer Institute.
Bishop, JF; Hicks, R; Johnston, VK; Millward, MJ; Rischin, D; Stokes, KH; Toner, GC; Webster, LK, 1996
)
0.29
"To report the experience at a single major oncology centre of carboplatin dosing based on GFR, and comparisons of different methods of measuring renal function for use in this dosing method."( Carboplatin dosing based on measurement of renal function--experience at the Peter MacCallum Cancer Institute.
Bishop, JF; Hicks, R; Johnston, VK; Millward, MJ; Rischin, D; Stokes, KH; Toner, GC; Webster, LK, 1996
)
0.29
"Carboplatin dosing using Cr51EDTA clearance to measure GFR was accurate (< 25% difference between planned and measured AUC) in 87% of samples."( Carboplatin dosing based on measurement of renal function--experience at the Peter MacCallum Cancer Institute.
Bishop, JF; Hicks, R; Johnston, VK; Millward, MJ; Rischin, D; Stokes, KH; Toner, GC; Webster, LK, 1996
)
0.29
"Carboplatin dosing using a pharmacological formula based on GFR produces accurate targeting of the carboplatin AUC."( Carboplatin dosing based on measurement of renal function--experience at the Peter MacCallum Cancer Institute.
Bishop, JF; Hicks, R; Johnston, VK; Millward, MJ; Rischin, D; Stokes, KH; Toner, GC; Webster, LK, 1996
)
0.29
" The cumulative dosage and duration of exposure were significantly associated with the reduction of FEV1 and FEV1/FVC."( Lung injury related to consuming Sauropus androgynus vegetable.
Chiang, CD; Deng, JF; Hsu, WH; Hung, DZ; Kao, CH; King, SL; Wu, CL, 1997
)
0.3
" The chelate can be incorporated into the formulation as a non-radioactive excipient and the intact dosage form can then be neutron activated to produce 153Sm."( Evaluation of 153Sm-diethylenetriaminepentaacetic acid for radiolabelling of pharmaceutical dosage forms by neutron activation.
Awang, MB; Davis, SS; Hardy, JG; Parry, SJ; Pimm, MV; Wilding, IR, 1994
)
0.29
" Meticulous attention to proper patient preparation, radiopharmaceutical selection, furosemide dosage and administration, and image interpretation and an awareness of potential pitfalls are essential for accurate diagnosis."( Provocative imaging. Diuretic renography.
Roarke, MC; Sandler, CM, 1998
)
0.3
" The carbon deposited uniformly along the lid margin in the case of the PFD vehicle, whereas it agglomerated following dosing in the saline vehicle and was ejected from the eye."( Dry powder dosing in liquid vehicles: ocular tolerance and scintigraphic evaluation of a perfluorocarbon suspension.
Frier, M; Meadows, D; Musson, R; Olejnik, O; Washington, N; Wilson, CG; Zhu, Y, 1999
)
0.3
" The AERx system demonstrated efficient and reproducible dosing characteristics in vivo."( Comparison of in vitro and in vivo efficiencies of a novel unit-dose liquid aerosol generator and a pressurized metered dose inhaler.
Farr, SJ; Lloyd, P; Okikawa, JK; Rowe, AM; Rubsamen, RM; Schuster, JA; Taylor, G; Warren, SJ, 2000
)
0.31
"Carboplatin is frequently dosed to achieve a desired area under the plasma concentration-time curve (AUC) by using the Calvert or Chatelut equations to estimate carboplatin clearance."( Measured versus estimated glomerular filtration rate in the Calvert equation: influence on carboplatin dosing.
Donahue, A; Faucette, S; Gillenwater, HH; Kowalski, RJ; Lindley, C; McCune, JS; Socinski, MA, 2001
)
0.31
" In this study, the 3-step strategy was optimized by selecting the most suitable radiolabeled hapten and tuning the dosing schedule."( A 3-step pretargeting strategy to image infection.
Boerman, OC; Corstens, FH; Oyen, WJ; van Eerd, J, 2001
)
0.31
" Using the bivalent chelate, the optimal dosing scheme was determined with respect to the DTIn-1 dose (2 nmol per rat), the blocking agent dose (1 nmol per rat), and radiolabeled chelate dose (40 pmol per rat)."( A 3-step pretargeting strategy to image infection.
Boerman, OC; Corstens, FH; Oyen, WJ; van Eerd, J, 2001
)
0.31
"The evaluation of renal function in patients with decompensated cirrhosis is important for prognosis, dosage assessment of potentially nephrotoxic drugs and recognition of changes in glomerular filtration rate (GFR) to decide paracentesis and diuretic therapy."( Diagnostic value of serum cystatin C for evaluation of hepatorenal syndrome.
Akbay, A; Bozbaş, A; Demirtaş, S; Karaca, L; Yavuz, Y, 2001
)
0.31
"To objectively evaluate the performance of new vaginal dosage forms, it is important to determine their time of residence and their distribution."( Retention and distribution of two 99mTc-DTPA labelled vaginal dosage forms.
Chatterton, BE; Hunt, B; Kovacs, JC; Penglis, S; Presnell, B, 2004
)
0.32
"Radioactive tracer methods are useful in assessing and comparing vaginal dosage forms."( Retention and distribution of two 99mTc-DTPA labelled vaginal dosage forms.
Chatterton, BE; Hunt, B; Kovacs, JC; Penglis, S; Presnell, B, 2004
)
0.32
"In cats, an individualized prescription strategy for carboplatin administration based on a targeted AUC and determination of GFR might more uniformly predict myelosuppression than that predicted by conventional dosing based on body surface area."( Effect of glomerular filtration rate on clearance and myelotoxicity of carboplatin in cats with tumors.
Bailey, DB; Dykes, NL; Erb, HN; Hoopes, PJ; Page, RL; Rassnick, KM, 2004
)
0.32
" No significant change was obtained in GFR after a 28-day period of dosing with tepoxalin and benazepril together."( Effect of tepoxalin on renal function in healthy dogs receiving an angiotensin-converting enzyme inhibitor.
Debailleul, M; Desfontis, JC; Fusellier, M; Gautier, F; Gogny, M; Madec, S; Marescaux, L, 2005
)
0.33
" This method, which is very simple and accurate, seems suitable to establish the adequate dosage of drugs cleared by the kidneys."( Prediction of glomerular filtration rate from body cell mass and plasma creatinine.
Ardini, M; Caprio, F; Consani, C; Donadio, C; Grassi, G; Lucchesi, A, 2004
)
0.32
" Once or twice daily dosing of 10 mg CsA A PARI would result in a sufficient peripheral lung deposition of approximately 14 and 28 mg/week, respectively."( Lung deposition of a liposomal cyclosporine A inhalation solution in patients after lung transplantation.
Baumgartner, R; Behr, J; Brand, P; Herpich, C; Keller, M; Leuchte, H; Menges, G; Neurohr, C; Seitz, J; Sommerer, K; Tillmanns, S; Zimmermann, G, 2009
)
0.35
" With the combination of high lung deposition, almost no loss of aerosol during exhalation, and short nebulization time the I-neb AAD System with the TIM breathing pattern should be of special value to patients who require multiple daily dosing of aerosolized medication, are using drugs that should not be wasted into the room air, or would benefit from a more efficient delivery system."( Mode of breathing-tidal or slow and deep-through the I-neb Adaptive Aerosol Delivery (AAD) system affects lung deposition of (99m)Tc-DTPA.
Coughlin, S; Nikander, K; Prince, I; Taylor, G; Warren, S, 2010
)
0.36
" We found that PLL produced a leftward shift in the dose-response curve following nebulized but not intravenous methacholine challenge."( The effects of inhaled house dust mite on airway barrier function and sensitivity to inhaled methacholine in mice.
Ellis, R; Inman, MD; Labiris, NR; Turi, GJ; Wattie, JN, 2011
)
0.37
"Carboplatin dosing depends on accurate glomerular filtration rate (GFR) estimation."( Very high GFR in cancer patients undergoing chemotherapy: prevalence, carboplatin dosing patterns and chemotherapy toxicity.
Bishnoi, S; Jones, DN; Karapetis, C; Kichenadasse, G; Koczwara, B; Lam, E; Roy, AC; Slavotinek, JP, 2011
)
0.37
" Carboplatin dosing patterns in this group of patients vary among treating oncologists and a standardized approach is needed."( Very high GFR in cancer patients undergoing chemotherapy: prevalence, carboplatin dosing patterns and chemotherapy toxicity.
Bishnoi, S; Jones, DN; Karapetis, C; Kichenadasse, G; Koczwara, B; Lam, E; Roy, AC; Slavotinek, JP, 2011
)
0.37
"The in vivo pharmacokinetic study of controlled release pastille formulation showed significant decrease in C(max) with increase in t(max), which indicates that the effect of dosage form would last for longer duration."( Evaluation of in vivo behavior of controlled and pulsatile release pastilles using pharmacokinetic and γ-scintigraphic techniques.
Chakraborty, S; Mishra, B; Shukla, D, 2012
)
0.38
"This study opens a new alternative to the conventional tablet or capsule dosage form for the development of both immediate and modified release drug delivery systems."( Evaluation of in vivo behavior of controlled and pulsatile release pastilles using pharmacokinetic and γ-scintigraphic techniques.
Chakraborty, S; Mishra, B; Shukla, D, 2012
)
0.38
"5-3 mm beads were stuck to the esophagus (up to 1 hour), this was a limitation of dosing beads of this size because they cannot be suspended in a liquid media for oral gavage purposes."( Size discrimination in rat and mouse gastric emptying.
Goins, BA; Jang, SF; McConville, JT; Phillips, WT; Rice-Ficht, A; Santoyo, C, 2013
)
0.39
"The cut-off emptying size in ICR mice could not be determined, due to the limitation of current available dosing methods."( Size discrimination in rat and mouse gastric emptying.
Goins, BA; Jang, SF; McConville, JT; Phillips, WT; Rice-Ficht, A; Santoyo, C, 2013
)
0.39
" Blood samples were collected over a 24-hr time period after aerosol dosing and analyzed for CsA levels."( Lung deposition and pharmacokinetics of nebulized cyclosporine in lung transplant patients.
Corcoran, TE; Dilly, S; Johnson, BA; Niven, R; Verret, W, 2014
)
0.4
" There are significant individual differences between mGFR DTPA and all eGFRs, impacting detection rate of CKD and potential drug dosage adjustment."( Estimated Glomerular Filtration Rate in Oncology Patients before Cisplatin Chemotherapy.
Bernatek, J; Salek, T; Vesely, P, 2015
)
0.42
"00) following N-9 gel dosing and 20."( Feasibility of radiolabeled small molecule permeability as a quantitative measure of microbicide candidate toxicity.
Aung, WS; Bakshi, RP; Coleman, JS; Fuchs, E; Hendrix, CW; Marzinke, MA; Robinson, J; Spiegel, HML, 2016
)
0.43
"Monitoring renal function is critical in treating pediatric patients, especially when dosing nephrotoxic agents."( Derivation of new equations to estimate glomerular filtration rate in pediatric oncology patients.
Brennan, RC; Cross, SJ; Daryani, VM; Gregornik, D; Millisor, VE; Molinelli, A; Pauley, JL; Roberts, JK; Stewart, CF; Sun, Y; Tang, L; Ward, D, 2017
)
0.46
[information is derived through text-mining from research data collected from National Library of Medicine (NLM), extracted Dec-2023]

Research

Studies (3,121)

TimeframeStudies, This Drug (%)All Drugs %
pre-1990986 (31.59)18.7374
1990's1096 (35.12)18.2507
2000's605 (19.38)29.6817
2010's378 (12.11)24.3611
2020's56 (1.79)2.80
[information is prepared from research data collected from National Library of Medicine (NLM), extracted Dec-2023]

Market Indicators

Research Demand Index: 13.83

According to the monthly volume, diversity, and competition of internet searches for this compound, as well the volume and growth of publications, there is estimated to be weak demand-to-supply ratio for research on this compound.

MetricThis Compound (vs All)
Research Demand Index13.83 (24.57)
Research Supply Index8.19 (2.92)
Research Growth Index4.39 (4.65)
Search Engine Demand Index15.26 (26.88)
Search Engine Supply Index2.00 (0.95)

This Compound (13.83)

All Compounds (24.57)

Study Types

Publication TypeThis drug (%)All Drugs (%)
Trials275 (8.24%)5.53%
Reviews107 (3.21%)6.00%
Case Studies601 (18.02%)4.05%
Observational11 (0.33%)0.25%
Other2,342 (70.20%)84.16%
[information is prepared from research data collected from National Library of Medicine (NLM), extracted Dec-2023]

Clinical Trials (2)

Trial Overview

TrialPhaseEnrollmentStudy TypeStart DateStatus
Pulmonary Functional Imaging for Radiation Treatment Planning [NCT01982123]12 participants (Actual)Interventional2014-01-17Completed
A Ph 3, Prospective, Open-Label, Multicenter Study of Lymphoseek®-Identified Sentinel Lymph Nodes (SLNs) Relative to the Path Status of Non SLN in an Elective Neck Dissection in Cutaneous Head and Neck and Intraoral Squamous Cell Carcinoma [NCT00911326]Phase 3101 participants (Actual)Interventional2009-05-31Terminated(stopped due to The trial was terminated early based on an interim review by the Data and Safety Monitoring Committee for positive efficacy outcome and no safety concerns.)
[information is prepared from clinicaltrials.gov, extracted Sep-2024]

Trial Outcomes

TrialOutcome
NCT00911326 (4) [back to overview]False Negative Rate (FNR)
NCT00911326 (4) [back to overview]Lymph Node Detection Rate
NCT00911326 (4) [back to overview]Negative Predictive Value (NPV)
NCT00911326 (4) [back to overview]Overall Accuracy
NCT01982123 (2) [back to overview]Radiation Dose With 50% Decrease in Lung Perfusion, Assessed Using 99mTc-MAA and 99mTc-DTPA SPECT/CT
NCT01982123 (2) [back to overview]Spatial Stability of Lung Perfusion and Ventilation Over Time, as Assessed Using 99mTc-MAA SPECT/CT

False Negative Rate (FNR)

The FNR is calculated as a percentage from the ratio of false negatives to the sum of true positives plus false negatives. The FNR point estimate was the observed rate and was made on a per-patient basis relative to patients with pathology-positive nodes. (NCT00911326)
Timeframe: Surgery after injection of Lymphoseek

Intervention% of pathology-positive participants (Number)
Intent-to-treat (ITT)2.56

[back to top]

Lymph Node Detection Rate

The rate of the subjects for whom Lymphoseek identified at least 1 sentinel lymph node. The detection rate point estimate was the observed rate and was made on a per-patient basis relative to all patients in the intent-to-treat population. (NCT00911326)
Timeframe: Surgery after injection of Lymphoseek

Interventionpercentage of participants (Number)
Intent-to-treat (ITT)97.6

[back to top]

Negative Predictive Value (NPV)

The NPV is calculated as a percentage from the ratio of true negatives to the sum of true negatives plus false negatives. The NPV point estimate was the observed rate and was made on a per-patient basis relative to patients predicted to be pathology-negative. (NCT00911326)
Timeframe: Surgery after injection of Lymphoseek

Intervention% of participants predicted negative (Number)
Intent-to-treat (ITT)97.8

[back to top]

Overall Accuracy

The overall accuracy is calculated as a percentage from the ratio of (true positives + true negatives) / (true positives + false negatives + true negatives). The overall accuracy point estimate was the observed rate and was made on a per-patient basis relative to all patients in the intent-to-treat population. (NCT00911326)
Timeframe: Surgery after injection of Lymphoseek

Interventionpercentage of participants (Number)
Intent-to-treat (ITT)98.8

[back to top]

Radiation Dose With 50% Decrease in Lung Perfusion, Assessed Using 99mTc-MAA and 99mTc-DTPA SPECT/CT

For lung tissue inside the radiation field, changes in tracer uptake at the global lung, regional lung, and lung image voxel scales (compared to baseline) will be plotted against the radiation dose at the same scales to generate multiscale radiation dose response curves. These curves will be fit to linear and sigmoid dose-response functions. Lung regions in the upper quartile and lower quartile of ventilation and perfusion will also be separated out, and separate radiation dose response curves per region will be generated. We report here the dose at which there is a 50% decrease in lung perfusion based on the above analysis. (NCT01982123)
Timeframe: Baseline to up to 3 months post-treatment

InterventionGy (Median)
SPECT/CT Mid-& Post-RT21

[back to top]

Spatial Stability of Lung Perfusion and Ventilation Over Time, as Assessed Using 99mTc-MAA SPECT/CT

Perfusion and ventilation on SPECT/CT pre-radiation, mid-radiation, and post-radiation were compared to assess stability over time. Coefficient of determination (R²) was generated based on voxel-based comparisons between scans (R²=1 means perfect reproducibility in perfusion and ventilation between scans), based on regions outside the radiation field. (NCT01982123)
Timeframe: Baseline to up to 3 months post-treatment

Interventioncorrelation coefficient (Number)
SPECT/CT Mid-& Post-RT0.95

[back to top]