نتایج جستجو برای: 201tl

تعداد نتایج: 335  

Journal: :Circulation 1978
J S Schwartz R Ponto P Carlyle L Forstrom J N Cohn

To define the time course of redistribution of thallium-201 (201Tl), ischemia was induced in seven pigs by temporary occlusion of the circumflex coronary artery. After 1 1/2 min of occlusion 201Tl and labeled microspheres were injected into the left atrium. Flow was re-established 4 min after occlusion. Prior to reflow, the relative activities of 201Tl and microspheres in the ischemic area were...

Journal: :Annals of nuclear medicine 2004
Takuji Toyama Hiroshi Hoshizaki Ryotaro Seki Naoki Isobe Shigeru Oshima Koichi Taniguchi Kyosuke Higuchi Hidenori Seki Takashi Hatori Masahiko Kurabayashi Keigo Endo

OBJECTIVE AND METHODS The aim of this study was to evaluate myocardial viability in patients after acute myocardial infarction (AMI). We compared 201Tl SPECT after 201Tl with GIK (10% glucose 250 ml, insulin 5 U and KCl 10 mEq) infusion (GIK-201Tl) with resting 201Tl and 99mTc-pyrophosphate (PYP) dual SPECT, positron emission computed tomography (PET) using 18F-fluorodeoxyglucose (18F-FDG) in 2...

Journal: :Circulation 1983
R A Wilson R D Okada H W Strauss G M Pohost

Factors influencing the rate of 201Tl clearance from the myocardium have not been clearly defined. This study determined the effect of an intravenous infusion of glucose-insulin-potassium (GIK) on the net 201Tl clearance rates from myocardium with and without initial 201Tl loading. Anesthetized open-chest dogs underwent 5 min of left anterior descending coronary artery occlusion and intravenous...

Journal: :Circulation 1991
R O Cannon V Dilsizian P T O'Gara J E Udelson W H Schenke A Quyyumi L Fananapazir R O Bonow

BACKGROUND Exercise-induced abnormalities during thallium-201 scintigraphy that normalize at rest frequently occur in patients with hypertrophic cardiomyopathy. However, it is not known whether these abnormalities are indicative of myocardial ischemia. METHODS AND RESULTS Fifty patients with hypertrophic cardiomyopathy underwent exercise 201Tl scintigraphy and, during the same week, measureme...

Journal: :Circulation research 1989
J A Leppo D J Meerdink

The myocardial transmicrovascular transport of thallium-201 (201Tl) and technetium-99m hexakis(2-methoxyisobutylisonitrile) (MIBI) were compared during variable blood flow levels in nine blood-perfused, isolated rabbit hearts. Seventeen injections of radiolabeled albumin and EDTA as well as 201Tl and MIBI were performed by indicator-dilution techniques. When coronary flow was varied from 0.52 t...

Journal: :Annals of nuclear medicine 2005
Takahiro Higuchi Junichi Taki Hisashi Sumiya Seigo Kinuya Kenichi Nakajima Masanobu Namura Norihisa Tonami

UNLABELLED Histological diagnosis and grading of cartilaginous tumors are closely correlated with patient prognosis; consequently, they are essential elements. We attempted to clarify the characteristics of 201Tl uptake in various histological types of cartilaginous tumors and to assess its clinical value. METHODS Twenty-two cases with histologically proven cartilaginous tumors (3 enchondroma...

Journal: :Annals of nuclear medicine 2000
N Watanabe E Okada M Shimizu K Noguchi S Endo R Futatsuya Y Horie N Tonami H Seto

Thallium-201 (201Tl) chloride scintigraphy is the imaging method use for the detection of various tumors including glioblastoma, but only limited information on 201Tl uptake in gliosarcoma is available. We investigated a patient with gliosarcoma by means of 201Tl single-photon emission computed tomography (SPECT) and MRI. SPECT imaging revealed high 201Tl uptake in the tumor, which was closely ...

Journal: :Annals of nuclear medicine 2004
Yoshihiro Nishiyama Yuka Yamamoto Koiku Yokoe Yoji Kawaguchi Yoshihiro Toyama Katashi Satoh Motoomi Ohkawa

OBJECTIVE The purpose of this study was to evaluate the usefulness of 201Tl scintigraphy in comparison with three-phase bone scintigraphy in the differentiation of residual/recurrent tumors from post-therapeutic changes, in patients previously treated for bone and soft-tissue tumors. METHODS Thirty-five 201Tl and three-phase bone scintigraphy scans were obtained for 30 patients with a history...

Journal: :Arquivos brasileiros de cardiologia 1999
W A Chalela P J Moffa J A Ramires A P Moraes J Soares Júnior J C Meneghetti

OBJECTIVE To compare single-photon-emission computed tomography (SPECT) imaging scans using 201Tl and 99mTc-MIBI in detection of viable myocardium, in regions compromised by infarction. METHODS Thirty-two (59.3 +/- 9.8 years old and 87% male) myocardial infarction patients were studied. All had Q waves on the ECG and left ventricle ejection fraction of < 50%. They underwent coronary and left ...

Journal: :Annals of nuclear medicine 2002
Hideki Otsuka Hiroyuki Shinbata Masashi Hieda Kyo Yamashita Hiroki Kitamura Takatoshi Senba Kenichi Kashihara Hiroshi Tagashira

OBJECTIVE The aim of this study was to assess the utility of 201Tl SPECT in the differential diagnosis of intracranial tumors and to determine the relationship between 201Tl uptake and histological types. METHODS Thirty-eight patients (19 males and 19 females) with thirty-eight brain tumors were evaluated with 201Tl-SPECT. The early and delayed 201Tl uptake ratio was calculated, and the reten...

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