نتایج جستجو برای: 201tl

تعداد نتایج: 335  

Journal: :Journal of nuclear medicine : official publication, Society of Nuclear Medicine 1998
M Lorberboym F Wallach L Estok R E Mosesson M Sacher C K Kim J Machac

UNLABELLED The purpose of this study was to determine whether 201Tl retention in focal intracranial lesions can help distinguish central nervous system (CNS) lymphoma from toxoplasmosis and other nonmalignant CNS lesions in patients with acquired immunodeficiency syndrome. METHODS Forty-nine patients who presented with focal lesions on CT and/or MRI had 201Tl brain SPECT studies (early and de...

Journal: :AJNR. American journal of neuroradiology 1998
L S Kessler A Ruiz M J Donovan Post W I Ganz A H Brandon J N Foss

PURPOSE Our aim was to examine the 201Tl-SPECT scans in AIDS patients with focal CNS lesions to identify those studies with a false-positive or false-negative result to determine any potential pitfalls in interpretation as well as to suggest methods for technique optimization. METHODS We retrospectively reviewed the charts of 162 AIDS patients with cerebral mass lesions on 201Tl-SPECT studies...

Journal: :Journal of nuclear medicine : official publication, Society of Nuclear Medicine 1987
K A Brown L Benoit J P Clements F J Wackers

A recent report described a pattern of "reverse redistribution" on poststreptokinase 201Tl studies which was believed to be due to rapid washout of 201Tl from the infarct area related to reperfusion of the infarct vessel. We have also observed the phenomenon of rapid washout of 201Tl from the area of infarction in the absence of thrombolytic therapy. This study was undertaken to test the hypoth...

Journal: :Indian journal of experimental biology 2011
Priyanka Saxena Aseem Bhatnagar Dhruv Kumar Nishad Ritu Tyagi Poonam Rana Shakir Ali Gaurav Mittal

Incubation of BMG-1 cells with thallium chloride (201Tl) in the range of diagnostic dose did not show a smooth uptake curve and appeared to have an unsuspected deviation in initial phase. In the present study this unexpected phenomenon was explored, using commonly used radionuclides (viz., 201Tl and 131I). Comparison was made with technetium-99m pertechnetate (99mTcO4(-)) and technetium-99m lab...

Journal: :Journal of nuclear medicine : official publication, Society of Nuclear Medicine 1995
D Fagret P Y Marie F Brunotte M Giganti D Le Guludec A Bertrand J E Wolf A Piffanelli F Chossat D Bekhechi

UNLABELLED We compared TcN-NOET [bis(N-ethoxy, N-ethyl dithiocarbamato)nitrido 99mTc] and 201Tl images to estimate the utility of this compound in the detection of coronary artery disease (CAD). METHODS Twenty-five patients undergoing cardiac catheterization had stress-redistribution-reinjection 201Tl SPECT imaging, stress-delayed (2, 4 and 6 hr postinjection) and rest-delayed (4 hr postinjec...

Journal: :Stroke 1992
B B Love M Grover-McKay J Biller K Rezai C R McKay

BACKGROUND AND PURPOSE The purpose of this study was to evaluate the prevalence of coronary artery disease and coronary events during follow-up in patients with asymptomatic carotid stenosis, transient ischemic attacks, or small strokes. METHODS We prospectively studied 60 consecutive patients with thallium-201 scintigraphy followed by coronary arteriography according to an established protoc...

Journal: :Circulation 1981
J Leppo J Rosenkrantz R Rosenthal R Bontemps T Yipintsoi

The redistribution of thallium-201 (201Tl) after coronary vasodilation was studied in 14 dogs with a proximal stenosis of the left circumflex coronary artery that did not reduce basal flow but attenuated reactive hypermia. During an 8-10-minute i.v. infusion of adenosine, radioactive microspheres and 201Tl were injected into the left atrium. Sequential cardiac scintiscans and microsphere inject...

Journal: :Circulation 1983
G A Beller H H Holzgrefe D D Watson

Myocardial thallium-201 (201Tl) uptake and clearance after intravenous administration of dipyridamole (150 micrograms/kg) were determined in 12 open-chest anesthetized dogs with a partial coronary artery stenosis. 201Tl (1.5 mCi) was injected intravenously and myocardial biopsy specimens were obtained 10 min, 60 min, and 2 hr after injection. Serial changes in 201Tl activity in the normal zone ...

Journal: :Circulation 1998
L I Olmos H Dakik R Gordon J K Dunn M S Verani M A Quiñones W A Zoghbi

BACKGROUND The accuracy of exercise echocardiography and 201Tl single photon emission computed tomography (SPECT) is similar in the diagnosis of coronary artery disease (CAD). However, comparative data on long-term prognosis are lacking. METHODS AND RESULTS Clinical variables and exercise, echocardiographic, and 201Tl tomographic parameters were studied in 248 patients (age, 56+/-12 years [me...

Journal: :Indian journal of experimental biology 2014
Priyanka Saxena Dhruv K Nishad Thakuri Singh Amit Kumar Ravi Kashyap Aseem Bhatnagar Gaurav Mittal

With an aim to devise a prophylactic and/or therapeutic approach for preventing internalization of radiothallium (201Tl), and more importantly by implication, its chemical analogue radiocesium (137Cs) during any nuclear emergency, different ex vivo and in vivo animal models were created to determine the role ofpH in absorption of 201Tl across jejunum/muscle tissue and whole body retention of 20...

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