thallium 201 e ercise

Comparison of adenosine and exercise thallium-201 single …

Jrtl-L Vul 11 N" ; Comparison of Adenosine and Exercise Thallium-201 Single-Photon Emission Computed Tomography (SPECT) Myocardial Perfusion Imaging NARFSH C GUPTA MD DENNIS J ESTERBROOKS MD FACC DANlbL E HILLEMAN PHARMD SYED M MOHIUDDIN MP FACC FOR THE GE SPECT …

Thallium | Tl (Element)

Jefferson Lab, U.S. Department of Energy. From Greek thallos, meanin a green shoot or twig. Thallium was discovered spectroscopically in 1861 by Crookes. The element was named after the beautiful green spectral line, which identified the element. The metal was isolated both by Crookes and by Lamy in 1862 at about the same time.

Thallium-201 Myocardial Perfusion Imaging without …

Thallium-201 Myocardial Perfusion Imaging without Exercise. Thallium-201 myocardial perfusion imaging is being widely used to assess patients with suspected coronary artery …

Clinical usefulness of thallium-201 scintigraphy in the …

Thallium dose 1.5 mCi 2.0 mCi Exercise imag10-1- 2 min 4-6 min ing delay view, in that order. Counts were col-lected for a 10-minute period for each image. Approximately 3-4 hours after exercise, the same views were repeated in the same time sequence and the two sets of images compared. An abnormal thallium image was defined as one or

Thallium-201 myocardial perfusion imaging in aortic valve …

The clinical utility of thallium-201 myocardial perfusion imaging in aortic valve stenosis was evaluated at rest and after exercise in three groups of…

Thallium | SpringerLink

Thallium was discovered in 1861 by the English chemist William Crookes, who, while examining residues from a sulfuric acid plant, noticed a green line in the emission spectrum never seen before. The studied material contained an unknown element. The green line...

Comparative Analysis of the Diagnostic and Prognostic

Comparative Analysis of the Diagnostic and Prognostic Value of Exercise ECG and Thallium-201 Scintigraphic Markers of Myocardial Ischemia in Asymptomatic and Symptomatic Patients. Author links open overlay panel Robert S. Gibson MD * Show more.

Prognostic significance of exercise thallium-201

The prognostic value of exercise thallium-201 myocardial perfusion imaging has not been studied in an elderly (aged ≥70 years) population. Retrospecti…

Quantitative thallium-201 exercise scintigraphy for …

Criteria for an abnormal thallium scintigram included: (a) greater than or equal to 25% persisted reduction in TI-201 uptake in anterolateral, anteroseptal, posterolateral, and inferoapical ...

E xercise imaging with thallium-201 (Tl-201) has

patlents, thalllum=201 Imaging should be added to routlne exercise stress testing for the detectlon of coronary artery dlsease. (Am J Carlo1 1989;63:190-199) E xercise imaging …

Quantitative comparison of thallium-201 scintigraphy

Data comparing myocardial thallium-201 imaging after exercise and intravenous dipyridamole infusion in the same patients are scarce. Accordingly, this…

Abnormal thallium-201 scans in patients with chest pain and

We reviewed the exercise thallium-201 (Tl-201) scans arid clinical data of 41 patients with chest pain and normal coronary arteries to identify clinic…

201Thallium (201TI) | SpringerLink

Lebowitz et al. [1] haben 201 Tl1973 in die klinische Anwendung eingeführt. 201 Tl ist ein im Zyklotron hergestelltes Radionuklid. Bei der Herstellung kommt es durch Protonenbeschluß eines inaktiven Thallium-Targets zur Bildung von radioaktivem 201 Blei ( 201 Pb), vom dem 201 Tl abgetrennt wird. Die physikalische Halbwertszeit (HWZ) von 201 ...

Exercise thallium-201 myocardial imaging in left main …

Exercise thallium-201 myocardial imaging in left main coronary artery disease: ... The 12 lead ex- ercise electrocardiograms were classified as positive for isch- emia if horizontal or downsloping S-T depression (1 mm or greater compared with electrocardiograms at rest) appeared in any lead and lasted 0.08 second and was …

E xercise imaging with thallium-201 (Tl-201) has

E xercise imaging with thallium-201 (Tl-201) has achieved wide acceptance as a noninvasive means of diagnosing coronary artery disease (CAD) due, in part, to its higher sensitivity compared with ex- ercise electrocardiography. 1-6 However, unlike the prev- alence of ST-segment depression which has been shown

Exercise thallium-201 scintigraphy and prognosis in typical …

A retrospective study of the prognostic utility of stress-redistribution thallium-201 scintigraphy was performed in 190 such patients. A second group of 203 patients with typical angina and a positive ex- ercise electrocardiogram were analyzed for com- parative scintigraphic purposes.

Thallium-201

Thallium-201 is a radiopharmaceutical agent used in the diagnosis of coronary artery disease and parathyroid hyperactivity. …

Myocardial imaging with thallium-201 at rest and …

Myocardial imaging with thallium-201 at rest and during exercise. Comparison with coronary arteriography and resting and stress electrocardiography. | Circulation AHA …

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 …

Can exercise electrocardiography and thallium-201

Thallium-201 myocardial perfusion imaging: During the same testing session in which the exercise electrocardio- gram was performed, we injected 1.5 to 2.0 millicuries (mCi) of thallium-201 intravenously, 1 minute before maximal ex- ercise, or when a flat 1.0 mm S-T depression occurred, as previously described in detail.21 Each patient continued ...

Prognostic value of exercise thallium-201 imaging in patients

Abstract. Accurate prognostic information is important in determining optimal management of patients presenting for evaluation of chest pain. In this study, the ability of exercis

(PDF) Thallium-201 for Detection of Myocardial Viability: …

All patients underwent thallium imaging 15 min, 4 h and late (18 to 72 h) after stress as part of the preintervention thallium-201 scintigram.In a total of 201 tomographic myocardial segments with ...

Thallium-201 myocardial perfusion imaging at rest …

The sensitivity of myocardial perfusion imaging (MPI) using thallium-201 injected both at rest and during peak exercise was compared to simultaneously recorded 12 lead …

Thallium Stress Test (Thallium 201 Exercise Test)

Thallium Stress Test (Thallium 201 Exercise Test) This test is the same as a treadmill exercise test. This test checks the function of the heart during and after physical activity. …

Exercise Thallium-201 Imaging in Complete Left Bundle …

TABLE I Clinical and Angiographic Data in Patients with Septal Thallium-201 Defects Area of Area of Percent Narrowing Indications Septal Other by Angiogram Pt. for % TI-201 TI-201 No. Test MPHR RPP Defects* Type Defects* Type …

Clinical implications of increased lung uptake of thallium-201 …

To determine the prevalence and clinical significance of increased lung thallium-201 uptake during submaximal exercise myocardial scintigraphy performed 2 weeks after acute myocardial infarction, 61 patients underwent submaximal exercise testing (target heart rate, 120 beats/min), multigated blood pool imaging at rest and coronary …

Superiority of quantitative exercise thallium-201 variables in

The purpose of this study was to determine the prognostic utility of quantitative exercise thallium-201 imaging and compare it with that of cardiac Ca…

Spectrum of exercise thallium-201 myocardial perfusion …

Twenty-seven consecutive patients with chest pain and no significant obstructive coronary lesions on arteriography were studied with thallium-201 myoc…

Thallium 201 Myocardial Imaging

Thallium is a potassium analogue that has been used to study cellular lesions in myocardial tissue, a tissue with a high potassium content. Using radioactive thallium, (thallium 201) …

Myocardial Perfusion Imaging with 201 Tl

For this protocol, a 111- to 148-MBq (3- to 4-mCi) (0.04 mCi/kg [1.48 MBq/kg]) 201 Tl dose is used, followed by 740–1,110 MBq (20–30 mCi) of a 99m Tc-labeled myocardial perfusion imaging tracer. Instead of waiting 30–60 min after the rest injection as is standard with 99m Tc-labeled myocardial perfusion tracers, one waits only the 10–15 ...

Incremental value of exercise electrocardiography and thallium-201

Incremental value of exercise electrocardiography and thallium-201 testing in men and women for the presence and extent of coronary artery disease Anthony P. Morise, MD,a George A. Diamond, MD,b Robert Detrano, MD, PhD,c and Marco Bobbio, MDd Morgantown, W. Va., Los Angeles and Torrance, Calif., and Turin, Italy Our goal was to …

Value of exercise thallium-201 imaging in patients with

Thallium-201 imaging: Our method for obtaining the exercise thallium-201 scintigrams has previously been de- scribed.5'8"15 Exercise images were considered abnormal when there was a segmental decrease in the activity that was not present or was smaller in the 4 hour redistribution images or in the images at rest (Fig. 1 and 2).

Thallium Toxicity

Thallium, a chemical element with the symbol TI, has an atomic number 81 on the periodic table. Thallium sulfate was once used as an ant and rat poison.[1][2][3] The occupational limit for thallium exposure is 0.1 mg/m^3 to the skin for eight hours a day. Levels of 15 mg/m^3 are considered immediately dangerous to one's health. Thallium is …