1. Sections - auntminnie.com

    Apr 03, 2002· Normal thallium washout is about 30% of activity at 3 hours and about 35% at 4 hours following injection. In general, thallium clears more slowly from regions supplied by stenotic vessels than from normal myocardial regions. Areas of significant hypoperfusion will have very slow clearance and may even accumulate thallium.

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  2. Prognostic utility of the exercise thallium-201 test in ...

    The goal of this study was to determine the prognostic utility of the exercise thallium-201 stress test in ambulatory patients with chest pain who were also referred for cardiac catheterization. Ac...

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  3. Serial thallium-201 myocardial imaging after dipyridamole ...

    Serial thallium-201 myocardial imaging after dipyridamole infusion: diagnostic utility in detecting coronary stenoses and relationship to regional wall motion. J Leppo, C A Boucher, R D Okada, J B Newell, H W Strauss, and ; G M Pohost

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  4. Diagnostic utility of tomographic myocardial perfusion ...

    Diagnostic utility of tomographic myocardial perfusion imaging with technetium 99m furifosmin (Q12) compared with thallium 201 Results of a phase III multicenter trial. Robert Hendel, Mario S. Verani, D. Douglas Miller, Frans J Th Wackers, Michael McMahon, Manuel D. Cerqueira, Elias H. Botvinick, Larry Kvols, Myron C. Gerson ...

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  5. Prognostic utility of sestamibi lung ... - BMC Medical Physics

    Mar 29, 2006· The assessment of myocardial perfusion using radioactive tracers has consistently been shown to provide important prognostic information in patients with known or suspected coronary artery disease [1–3].A number of additional non-perfusion parameters of left ventricular function have also been described to have prognostic importance, such as transient ischemic cavity dilation (TID) and left ...

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  6. DIAGNOSTIC PERFORMANCE OF TOMOGRAPHIC MYOCARDIAL …

    DIAGNOSTIC PERFORMANCE OF TOMOGRAPHIC MYOCARDIAL PERFUSION IMAGING Coronary angiography and myocardial perfusion. MPI allows direct assessment of myocardial perfusion and therefore has an important role in the diagnosis of CAD in patients presenting with chest pain.

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  7. Thallium-201 scintigraphy in the diagnosis and management ...

    We have described three patients with clinical evidence of myocardial sarcoidosis to illustrate the utility of thallium-201 scintigraphy in demonstrating the myocardial lesions. Both the symptomatic and asymptomatic individuals studied showed the characteristic reverse redistribution phenomenon. No ...

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  8. Prognostic utility of the exercise thallium-201 test in ...

    title = "Prognostic utility of the exercise thallium-201 test in ambulatory patients with chest pain: Comparison with cardiac catheterization", abstract = "The goal of this study was to determine the prognostic utility of the exercise thallium-201 stress test in ambulatory patients with chest pain who also referred for cardiac catheterization.

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  9. Thallium-201 for Myocardial Perfusion Imaging | Lantheus

    Thallium-201 is a radiopharmaceutical used in myocardial perfusion imaging (MPI) using either planar or single photon emission computed tomography (SPECT) techniques for the diagnosis and localization of myocardial infarction. Thallium-201 may also have prognostic value regarding survival, when used in the clinically stable patient following ...

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  10. Prognostic utility of predischarge dipyridamole-thallium ...

    @article{osti_5083652, title = {Prognostic utility of predischarge dipyridamole-thallium imaging compared to predischarge submaximal exercise electrocardiography and maximal exercise thallium imaging after uncomplicated acute myocardial infarction}, author = {Gimple, L.W. and Hutter, A.M. Jr. and Guiney, T.E. and Boucher, C.A.}, abstractNote ...

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  11. Positive Exercise ECG and Negative Thallium -- A Standard ...

    The utility of planar thallium imaging was enhanced by the development of quantitative techniques for assessing the initial distribution and subsequent washout of thallium. Un-fortunately, planar imaging is inherently suboptimal for as-sessing myocardial perfusion because frequent overlap of normally and abnormally perfused myocardial regions ...

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  12. Serial thallium-201 myocardial imaging after dipyridamole ...

    We conclude that qualitative interpretation by multiple observers of thallium images after dipyridamole infusion is a highly sensitive and specific test for CAD. After dipyridamole, as with exercise stress, the extent of thallium redistribution is related to the degree of myocardial wall motion abnormality.

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  13. Prognostic utility of predischarge dipyridamole-thallium ...

    @article{osti_5083652, title = {Prognostic utility of predischarge dipyridamole-thallium imaging compared to predischarge submaximal exercise electrocardiography and maximal exercise thallium imaging after uncomplicated acute myocardial infarction}, author = {Gimple, L.W. and Hutter, A.M. Jr. and Guiney, T.E. and Boucher, C.A.}, abstractNote = {The prognostic value of predischarge dipyridamole ...

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  14. Rest—redistribution thallium-201 scintigraphy ... - DeepDyve

    Read "Rest—redistribution thallium-201 scintigraphy to determine myocardial viability early after myocardial infarction, Journal of the American College of Cardiology" on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips.

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  15. Dipyridamole thallium-201 scintigraphy for early risk ...

    Objective To determine the safety and prognostic value of dipyridamole thallium-201 scintigraphy performed in patients within three to five days of acute myocardial infarction, including those receiving thrombolytic treatment. Design A prospective study of dipyridamole thallium-201 scintigraphy in patients early after acute myocardial infarction.

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  16. Variability of myocardial perfusion defects assessed by ...

    Oct 01, 2001· CONCLUSIONS As demonstrated in the ATLANTIC study, percent myocardial ischemia in control subjects receiving constant medical therapy varied in individual patients by an average of ∼50%. This may limit the utility of thallium scintigraphy to detect improved myocardial perfusion over time in response to therapy.

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  17. Regional variability in the myocardial clearance of ...

    Although mean myocardial clearance of thallium in 15 myocardial segments in three views in Group I subjects was 3.4 ± 0.7 hours, the variability between the slowest and fastest clearing segments in the same subject was as much as 98%.

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  18. Thallium redistribution: Mechanisms and clinical utility ...

    Thallium-201 is widely used as a myocardial imaging agent in conjunction with other clinical studies for the detection of coronary artery disease. Despite its clinical utility, its kinetic behavior in biological tissue is not fully understood. It is known that the initial distribution of …

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  19. How does caffeine affect the results of thallium ...

    Doctors give trusted answers on uses, effects, side-effects, and cautions: Dr. Wosnitzer on how does caffeine affect the results of thallium myocardial perfusion scan: Caffeine in the usual dietary dose won't affect an exercise stress test with thallium imaging, but if you ingest caffeine recently you cannot have a stress test with pharmacologic stress using Persantine (dipyridamole ...

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  20. Thallium redistribution: Mechanisms and clinical utility ...

    Thallium Redistribution: Mechanisms and Clinical Utility Gerald M. Pohost, Nathaniel M. Alpert, Joanne S. Ingwall, and H. William Strausd Thallium-201 is widely used as a myocardial imaging agent in conjunction with other clinical studies for the detection of coronary artery disease, Despite its clinical utility, its kinetic behavior in biological tissue is not fully understood.

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  21. Do Thallium Myocardial Perfusion Scan Abnormalities ...

    The authors used the difference in mortality rate to infer whether thallium 201 myocardial perfusion scan abnormalities correspond to myocardial sarcoid by making the simplifying assumption that if they do, then patients with abnormal scans will be found to have a …

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  22. Thallium-201 Myocardial Perfusion Imaging without Exercise ...

    Thallium-201 myocardial perfusion imaging is being widely used to assess patients with suspected coronary artery disease.1,2 Initially after injection of the thallium, regional thallium myocardial uptake reflects regional coronary blood flow.3 Images two or three hours later are obtained to determine if the regions with reduced thallium uptake initially fill-in (redistribute), which indicates ...

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  23. How Thallium is used Today | Actforlibraries.org

    Thallium and thallium compounds as environmental toxins. Despite thallium’s utility in some commercial settings, this element also often appears as a waste byproduct at contaminated environmental sites. Due to its potential to cause cancers, it must be removed as a hazardous waste under some circumstances. Conclusion

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  24. The utility and potential cost-effectiveness of stress ...

    Request PDF on ResearchGate | The utility and potential cost-effectiveness of stress myocardial perfusion thallium SPECT imaging in hospitalized patients with chest pain and normal or non ...

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  25. Dipyridamole combined with exercise for thallium-201 ...

    A new stress test for thallium-201 myocardial imaging in which pharmacological coronary vasodilatation with dipyridamole is combined with dynamic exercise is described. In 38 patients with coronary artery disease the sensitivity, total number of defects, degree of redistribution, and visual quality ...

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  26. Review of SPECT Myocardial Perfusion Imaging

    Historically, thallium-201 (Tl-201) was used in nuclear medicine to image the myocardium. Tl-201 is a potassium analogue that decays primarily via electron capture to mercury-201 emitting 69-81 KeV x-rays. 18 It is actively transported into myocardial cells by sodium-potassium pumps. Thallium uptake is directly proportional to perfusion of the ...

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  27. The utility and potential cost-effectiveness of stress ...

    The utility and potential cost-effectiveness of stress myocardial perfusion thallium SPECT imaging in hospitalized patients with chest pain and normal or non-diagnostic electrocardiogram. Ben-Gal T(1), Zafrir N. Author information: (1)Nuclear Cardiology Unit, Rabin …

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  28. Dipyridamole-Thallium Scintigraphy and Gated Radionuclide ...

    Serial thallium-201 myocardial imaging after dipyridamole infusion: diagnostic utility in detecting coronary stenoses and relationship to regional wall motion. Circulation 1982 ;66: 649 - 657 Crossref

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  29. Thallium Heart Scan | definition of Thallium Heart Scan by ...

    Thallium Heart Scan Definition A thallium heart scan is a test using a special camera and a small amount of radioactive substance injected into the bloodstream to make an image of the blood flow to the heart. Purpose A thallium heart scan is used to evaluate the blood supply to the heart muscle. It can identify areas of the heart that may have a poor ...

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  30. Utility of myocardial perfusion imaging in patients with ...

    underwent myocardial perfusion imaging. The CS was derived by assigning one point to each of the following variables: typical angina, history of myocardial infarction, diabetes, insulin use, male gender, and each decade of age over 40 years. A CS cutoff 5or5 was used to categorize patients as high risk (n 303 [21%]) or low risk (n 1,158 [79%]).

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  31. Prognostic utility of increased pulmonary thallium uptake ...

    Although the combination of increased pulmonary thallium uptake and ischemia has demonstrated prognostic utility, the value of pulmonary uptake independent of ischemia has not been evaluated critically. Accordingly, our purpose was to evaluate the prognostic utility of thallium lung uptake in patients who do not have stress-induced defects.

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  32. Diagnostic utility of tomographic myocardial perfusion ...

    Diagnostic utility of tomographic myocardial perfusion imaging with technetium 99m furifosmin (Q12) compared with thallium 201: Results of a phase III multicenter trial

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  33. Thallium-20 1 ‘Versus Technetium-99m Pyrophosphate ...

    Thallium-20 1 ‘Versus Technetium-99m Pyrophosphate Myocardial Imaging in Detection and Evaluation of Patients With Acute Myocardial Infarction BERTRAM PITT, MD, FACC JAMES H. THRALL, MD Ann Arbor, Michigan Thallium-201 myocardial imaging is of …

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