نتایج جستجو برای: 99mtc dtpa renogram

تعداد نتایج: 8587  

Journal: :Journal of physics 2022

Absract ✓ Objective : To develop a Convolution Neural Network (CNN) and discuss its performance in the estimation of Glomerular Fifiltration Rate (GFR) for patients with chronic kidney disease (CKD). Methods A total 112 were enrolled this study. The GFR is measured by 99mTc-DTPA renal dynamic used as standard after normalization body surface area imaging. We established CNN model verified compa...

موحد, منصور, حکمت, سپیده, شرفی, علی‌اکبر, مرتضی‌زاده, توحید,

    Background: In this survey the absorbed dose by kidneys, bladder, liver and ovaries with 99mTc-EC (99mTc Ethylene dicysteine) renal scintigraphy was measured and compared with the absorbed dose from 99mTc-DTPA (99mTc - Dietheylne Triamine Penta-Acid), which often is used in renal scintigraphy.Methods: In this applicable study, we used a water phantom with geometrical sizes similar to that o...

2002
Y.S.R. Krishnaiah S. Satyanarayana Rama Prasad

PURPOSE: The suitability of 99mTc-diethylenetriaminepentaacetic acid (DTPA) and 99mTc-sulphur colloid (99mTc-SC) as tracers in gamma Scintigraphy for the evaluation of colon-specific drug delivery systems was assessed in healthy volunteers. METHOD: Sodium chloride core tablets containing either 99mTc-DTPA or 99mTcSC were prepared and compression coated with two different quantities of guar gum....

Journal: :Hypertension 1986
J V Nally H S Clarke G P Grecos M Saunders M L Gross W J Potvin J P Windham

In an effort to improve on the noninvasive detection of renal artery stenosis, we investigated the effect of angiotensin converting enzyme inhibition on computer-assisted 99mTc-diethylenetriaminepentaacetic acid (DTPA) renal flow studies in a canine model of two-kidney, one clip hypertension and compared these findings with clearances of inulin and p-aminohippuric acid in the stenotic and contr...

Journal: :In vivo 2008
Huseyin Enginar Perihan Unak Fatma Yurt Lambrecht F Zumrut Biber Muftuler E Ilker Medine

BACKGROUND Two 99mTc-DTPA attached estrone derivatives were synthesized and their radiopharmaceutical potential was determined using female albino Wistar rats. MATERIALS AND METHODS Two novel radiolabeled estrone derivatives, 99mTc-2,2',2"2"'-(2,2'-(2-(3-methoxy-13-methyl-17-oxo-7, 8, 9, 11, 12, 13, 14, 15, 16, 7-decahydro-6H- cyclopenta[a]phenanthren-2-ylamino)-2- oxoethylazanediyl) bis(etha...

Journal: :Journal of applied physiology 1999
W M Foster A N Freed

The influence of local exposure to ozone (O3) on respiratory epithelial permeability of sublobar lung segments was studied by using aerosolized 99mTc-diethylenetriamine pentaacetic acid (DTPA; mol wt, 492). Two bronchoscopes were inserted through an endotracheal tube in anesthetized, mechanically ventilated, mixed breed dogs and were wedged into sublobar bronchi located in the right and left lo...

Journal: :Thorax 1992
B Schmekel J A Bos A R Khan B Wohlfart B Lachmann P Wollmer

BACKGROUND The permeability of the alveolar-capillary barrier to technetium-99m labelled diethylenetriamine pentaacetate (99mTc DTPA) is known to be greatly increased in smokers, but the underlying mechanism is poorly understood. Abnormal permeability of the alveolar epithelium as well as impaired surfactant function has been suggested. The purpose of this study was to examine transudation of u...

Journal: :The European respiratory journal 1993
K Nilsson P Wollmer

We measured the pulmonary clearance of inhaled 99mTc-diethylenetriamine penta-acetic acid (DTPA), 99mTc-sestamibi and 99mTc-dimethyliminodiacetic acid (HIDA) in normal rabbits, and rabbits with surfactant dysfunction induced by the detergent dioctyl sodium sulfosuccinate. The tracers differ widely in lipid/water partition coefficients, but have similar molecular radius and weight. Five animals ...

Journal: :Brazilian journal of medical and biological research = Revista brasileira de pesquisas medicas e biologicas 2003
C M Silveira M L V Castiglioni I C G Torres R B Medeiros J R Jardim

Two radioaerosol preparations, TechneScan -DTPA (99mTc-DTPA, 40 mCi/3 ml; IPEN-CNEN, São Paulo, SP, Brazil) and TechneScan -DTPA/AEROSOL (99mTc-DTPA/A, 15 mCi/1.5 ml with 0.5 ml ethanol; Mallinckrodt Medical, St. Louis, MO, USA), were compared in pulmonary ventilation studies in terms of total radiocounts and clearance after inhalation. An aerosol with ethanol is supposed to better distribute t...

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