thallium scintigraphy exercise

Exercise thallium 201 myocardial scintigraphy (TMS) and rest-exercise radionuclide ventriculography (RNV) are important noninvasive tests used to examine patients with cardiac diseases. Thallium 201 myocardial scintigraphy assesses myocardial perfusion. A perfusion defect during exercise is almost always an indicator of coronary artery disease.

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Exercise stress scintigraphy can detect ischemia or scar [defect] in the territory of left circumflex with 75% sensitivity, 78%specificity and 77%overall predictive accuracy. While the ability of exercise ECG in localizing lateral ischemia [LI, aVL, V5, V6], reached a sensitivity of 75%, specificity of 46% and overall predictive accuracy of 53%.

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OSTI.GOV Journal Article: Comparative analysis of the diagnostic and prognostic value of exercise ECG and thallium-201 scintigraphic markers of myocardial ischemia in …

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• Myocardial scintigraphy with thallium 201 is a simple, safe, and valuable noninvasive technique in evaluating the condition of patients with cardiac disorders. Images obtained at rest appear to have limited usefulness at the present time.

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Aug 01, 1999· Methods: Two-year assessment by exercise thallium myocardial scintigraphy without medical treatment was performed in 122 patients (mean age 61±9 years) who underwent coronary artery bypass grafting (CABG) with exclusive use of IMAs and GEA. Usually, the right IMA was used to bypass the left anterior descending coronary artery, and the left IMA ...

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Thirty patients with recurrent symptoms after aortocoronary bypass graft surgery underwent angiography as well as exercise thallium 201 imaging. Exercise imaging has been shown to be highly specific (100 percent in our study) in evaluating patients after bypass surgery. Patients with complete revascularization have normal thallium 201 images.

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scintigraphy [sin-tig´rah-fe] production of two-dimensional images of the distribution of radioactivity in tissues after internal administration of a radiopharmaceutical imaging agent, the images being obtained by a scintillation camera. adj., adj scintigraph´ic. exercise thallium scintigraphy myocardial perfusion using thallium 201 as a tracer and ...

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May 01, 1982· Exercise thallium 201 myocardial scintigraphy (TMS) and rest-exercise radionuclide ventriculography (RNV) are important noninvasive tests used to examine patients with cardiac diseases. Thallium 201 myocardial scintigraphy assesses myocardial perfusion. A perfusion defect during exercise is almost always an indicator of coronary artery disease.

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A thallium stress test is a nuclear imaging test that shows how well blood flows into your heart while you're exercising or at rest. This test is also called a cardiac or nuclear stress test ...

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exercise thallium scintigraphy, the medical literature (1977 to 1986) was non-selectively searched and meta-analysis was applied to the 56 publications thus retrieved. These were analyzed for year of publica- tion, and mean age of patients, percentage of patients with angina pectoris, percentage of patients with prior myocardial infarction ...

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scintigraphy [sin-tig´rah-fe] production of two-dimensional images of the distribution of radioactivity in tissues after internal administration of a radiopharmaceutical imaging agent, the images being obtained by a scintillation camera. adj., adj scintigraph´ic. exercise thallium scintigraphy myocardial perfusion using thallium 201 as a tracer and ...

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To determine the value and limitations of quantitative analysis of thallium-201 imaging after intravenous dipyridamole in combination with low level exercise, 81 patients with suspected coronary artery disease (CAD) were evaluated prospectively. The results of quantitative analysis were compared with the results of visual analysis.

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We studied 50 consecutive patients with diabetes and 50 consecutive patients without diabetes, all with ischemia, on exercise thallium scintigraphy to show the reliability of angina as a marker for exertional ischemia. The two groups had similar clinical characteristics, treadmill test results, and extent of infarction and ischemia, but only 7 ...

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Evaluation of thallium-201 exercise scintigraphy in coronary heart disease. Br Heart J. 1979 May; 41 (5):568–574. [PMC free article] Meller J, Goldsmith SJ, Rudin A, Pichard AD, Gorlin R, Teichholz LE, Herman MV. Spectrum of exercise thallium-201 myocardial perfusion imaging in patients with chest pain and normal coronary angiograms.

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Among the patients with a normal result on thallium scintigraphy, exercise capacity was lower in the presence of an abnormal value for heart-rate recovery (men, 7.9 MET vs. 9.8 MET in patients ...

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Thallium- 201 exercise scintigraphy was valuable for detection of CAD in patients with LBBB, who present with angina pectoris. In most patients the area of ischemia is located only inferoposteriorly or is accompanied by a septal defect.

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A thallium stress test is a form of scintigraphy, where the amount of thallium-201 detected in cardiac tissues correlates with tissue blood supply. Viable cardiac cells have normal Na + /K + ion exchange pumps. Thallium binds the K + pumps and is transported into the cells. Exercise or dipyridamole induces widening (vasodilation) of normal ...

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Thallium scintigraphy is most often done as an adjunct to conventional exercise electrocardiography (ECG) to aid in the diagnosis, prognosis, and functional evaluation of patients with known or suspected coronary artery disease. The patient is given an intravenous dose of thallium-201, ranging from 2.0 to 3.5 mCi, at the peak of exercise.

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Thallium-201 scintigraphy after dipyridamole infusion with low-level exercise. III. Clinical significance and additional diagnostic value of ST segment depression and angina pectoris during the test

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Exercise and redistribution thallium-201 imaging is commonly used for the detection and evaluation of left ventricular ischaemia and infarction. The right ventricle is frequently visualised after stress and sometimes on redistribution images. The visualisation of the right ventricle at rest is ...

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{{configCtrl2.info.metaDescription}} INTRODUCTION. Radionuclide myocardial perfusion imaging (rMPI) enables evaluation of cardiac perfusion and function at rest and during dynamic exercise or pharmacologic stress for the diagnosis and management of patients with known or …

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The exercise stress test is a useful screening tool for the detection of significant coronary artery disease. Documentation of the patient's symptoms, medications, past and current significant ...

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Stress Thallium Scintigraphy . Thallium-201 scintigraphy was performed in conjunction with the maximal exercise treadmill test in 259 siblings. One minute before the subject anticipated exercise cessation, 3 mCi thallium-201 was injected through a peripheral intravenous line and flushed in rapidly.

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The prevalence of silent myocardial ischemia was prospectively assessed in a group of 103 consecutive patients (mean age 59 +/- 10 years, 79% male) undergoing symptom-limited exercise thallium-201 scintigraphy. Variables that best correlated with the occurrence of painless ischemia by quantitative scintigraphic criteria were examined.

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Exercise thallium-201 perfusion scintigraphy has been used extensively over the last decade for the detection and localization of coronary artery disease. Single-photon emission computed tomography (SPECT) is a refinement of presently available techniques, offering improved identification over ...

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Thus, the sensitivity and specificity of exercise scintigraphy fox detection of myocardial ischemia were 9 9 and 12 12. while those of stress ECG were 9 9 and 7 12 (58%). respectively. It is recommended that exercise thallium scintigraphy be used for detecting clinically occult but significant coronary arterial involvement in aortitis syndrome ...

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with thallium scintigraphy. There were a total of 43 deaths occurring after the exercise tolerance test (ETT), 36 of which occurred in patients whose 6-month ETT involved thallium scintigraphy. Of the 297 exercise tests with interpretable ECG studies, 153 were considered positive and 24 …

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201 exercise perfusion scintigraphy. Obstructive coronary disease involved two orthreevessels in 37patients. Thesensitivity of a positive electrocardiographic test during exercise for detecting ...

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Nov 01, 1990· Objective: To determine the discriminant accuracy of exercise thallium-201 myocardial perfusion scintigraphy for the diagnosis and prognosis of patients with known or suspected coronary artery disease. Data Identification: A survey of the National Library of …

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Exercise Thallium Scintigraphy. Treadmill exercise was performed using the Bruce or modified Bruce protocol. Electrocardiograms were interpreted using standard criteria, and were deemed positive when there was 1.0 mm horizontal ST depression. 7 One minute before end exercise, 3.0 to 3.5 mCi of thallous 201 chloride was injected intravenously.

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