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Symptom-limited treadmill exercise with thallium-201 myocardial single photon emission computed tomography (SPECT) was performed one and 13 weeks after PTCA in 18 patients with exercise training and in 20 patients without. For quantitative analysis, the average count of region of interest in the hypoperfused area on the polar map was calculated.


Thallium-201. 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 ...


Exercise workload is an important prognostic variable derived from the exercise stress test. Good exercise capacity has been associated with decreased mortality, myocardial infarction, and revascularization, even in those with ischemic ST-segment depression (6,8,9,17,19,20). Moreover, exercise duration is one of the three components of the Duke ...


The effect of long-term exercise training on myocardial perfusion in CAD patients was assessed using thallium-201 (201Tl) exercise studies at a baseline (4 months after the onset of CAD) and at a 1-year or more follow-up in 58 patients with stable CAD.


A thallium scan is a test that uses a radioactive substance known as a tracer to produce images of the heart muscle. The exercise thallium scan is especially useful in diagnosing coronary heart disease. You may also be connected to a holter monitor. This is used to record your heartbeat and determine if any palpitations occur.


Exercise training consisted of 15 minutes of calisthenics and 40 minutes of stationary biking at 60% of peak V02 three times weekly for 6 months. Controls were told to avoid training and each group reported daily activities. Lipid lowering therapy was not allowed. Baseline and 6-month studies by protocol included a repeat coronary arteriogram ...


Reverse redistribution (RR) i.e., worsening of images from exercise to redistribution, was noted in 21 (7%) of 300 consecutive thallium-201 (201TI) exercise and redistribution myocardial imaging studies. In 13, there were reversible defects consistent with ischemia in addition to redistribution defects.


The effect of exercise training on myocardial perfusion was assessed using initial and 1-year thallium-201 (Tl-201) exercise studies in 56 patients with stable coronary artery disease (CAD). Subjects had been randomized into a trained group participating in supervised exercise three times per week a …


The exercise group (n = 26) underwent exercise training at 60% of peak oxygen uptake for 8 weeks. The control group (n = 20) was not exercised. At baseline and after 8 weeks all patients underwent an exercise test with gas exchange analysis and stress echocardiography using low-dose dobutamine (5 to 10 microg/kg per minute) followed by thallium ...


Background: It is still a matter of debate whether exercise training (ET) is a beneficial treatment in chronic heart failure (CHF). Methods and results: To determine whether long-term moderate ET improves functional capacity and quality of life in patients with CHF and whether these effects translate into a favorable outcome, 110 patients with stable CHF were initially recruited, and 99 (59 ...


Exercise Training Exercise training was performed in 2 phases. Initially, patients exercised 3 times a week for 8 weeks at 60% of peak V˙O 2. This protocol was followed by a 12-month maintenance program of the same intensity but with only 2 sessions a week. Each session lasted '1 hour, beginning with a warm-up phase of stretching exercises (15


There is almost no disease that exercise doesn't benefit. As such, just because you've had a heart attack, a weak heart (congestive heart failure) or other heart disease, doesn't mean that you have to sit around and do nothing.In fact, with regular exercise (greater than 150 minutes a week), you may hasten your recovery, improve heart function and even get off of some of the medications you're on.


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 ...


1 Introduction. Thallium is an odorless, colorless, and rare heavy metal that occurs in nature, primarily in the form of oxides, halides, sulphates, carbonates, and acetate compounds. Thallium compounds have been widely used for rodenticides; however, due to cases of thallium poisoning, use of these compounds has been banned in many countries. Despite this, thallium poisoning persists in ...


Limitation of exercise capacity is one of the cardinal manifestations of heart failure (HF), varying directly with the severity of the disease. Thus, decreased maximal exercise capacity is associated with decreased patient survival and impairment of quality of life. Exercise training may have a variety of benefits, including an improvement in ...


A Randomized Trial of Exercise Training in Patients With Coronary Heart Disease. In order to determine whether or not regular exercise could alter myocardial perfusion or function, we randomized 146 male volunteers with stable coronary heart disease to either a supervised exercise program (n = 72) or to a usual care program (n = 74).


Exercise training following myocardial infarction improves myocardial perfusion assessed by thallium-201 scintigraphy. Mark G Gunning Department of Cardiology, University College London Medical School, London, UK.


Accordingly, 19 post-MI patients (mean age 53 +/- 7 years) underwent treadmill exercise quantitative thallium-201 (Tl-201) scintigraphy and rest radionuclide angiography (RNA) prior to and after 12 weeks of thrice-weekly exercise training which was targeted …


Exercise training alone or as core component of cardiac rehabilitation programmes has several beneficial effects after acute myocardial infarction, reducing long-term morbidity and mortality [], preventing cardiac remodelling [2–5] and improving cardiovascular functional capacity, cardiac symptoms and quality of life [6, 7].The improvement of endothelial function [8, 9], the anti ...


A cardiac stress test (also referred to as a cardiac diagnostic test, cardiopulmonary exercise test, or abbreviated CPX test) is a cardiological test that measures the heart's ability to respond to external stress in a controlled clinical environment. The stress response is induced by exercise or by intravenous pharmacological stimulation. Cardiac stress tests compare the coronary circulation ...


AIM:We assessed the effects of a 6-week exercise programme on the thallium-201 myocardial perfusion characteristics of patients following myocardial infarction. METHODS:Twenty-five patients presenting with a first acute myocardial infarction were randomised into two groups: (i) those undergoing a supervised exercise training programme over 6 ...


The effects of exercise training on myocardial perfusion in patients with coronary artery disease were previously investigated mainly with thallium scintigraphy [19, 28, 29]. In patients with ...


In fact, posttraining changes in peak oxygen uptake and thallium uptake score index were correlated (r=−0.52; P<0.01), and the best independent predictors of improvement in functional capacity after exercise training were thallium activity score index and peak oxygen uptake at baseline. Patients with higher myocardial perfusion at baseline ...


A Randomized Trial of Exercise Training in Patients With Coronary Heart Disease, Froelicher, Jensen, et al. perfext1984-froelicherDownload NHLBI funded at UCSD (1979-1983) Abstract In order to determine whether or not regular exercise could alter myocardial perfusion or function, we randomized 146 male volunteers with stable coronary heart disease to either a supervised exercise program (n…


of exercise training begun soon after hospital discharge for myocardial infarction (MI) with respect to subsequent im- provement in exercise tolerance, enhancement of regional myocardial perfusion, or left ventricular function. Accord- ingly, 19 post-MI patients (mean age 53f7 years) under- went treadmill exercise quantitative thallium-201 (Tl-201)


Similar to a routine exercise stress test but with images. Uses radioactive substance called thallium injected into the bloodstream when patient is at maximum level of exercise to take pictures with a special (gamma) camera of the heart's muscle cells. Reason for Test. Helps measure blood flow of your heart muscle at rest and during stress.


A treadmill exercise stress test is used to determine the effects of exercise on the heart. Exercise allows doctors to detect abnormal heart rhythms (arrhythmias) and diagnose the presence or absence of coronary artery disease.. This test involves walking in place on a treadmill while monitoring the electrical activity of your heart.


The effect of exercise training on myocardial perfusion was assessed using initial and 1-year thallium-201 (Tl-201) exercise studies in 56 patients with stable coronary artery disease (CAD). Subjects had been randomized into a trained group participating in supervised exercise three times per week and a control group. Indices (non-dimensional units) based on computer-analyzed circumferential ...


Aim: We assessed the effects of a 6-week exercise programme on the thallium-201 myocardial perfusion characteristics of patients following myocardial infarction.Methods: Twenty-five patients presenting with a first acute myocardial infarction were randomised into two groups: (i) those undergoing a supervised exercise training programme over 6 weeks (n=15) and (ii) a control group …


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of total activity is not less than 98 percent Thallium Tl 201 with not more than 0.1 percent Thallium Tl 200, not more than 1.2 percent Thallium Tl 202; not more than 0.2 percent Lead Pb 203, and not more than 0.3 percent all others. The concentration of each radionuclide contaminant changes with time.


Exercise Stress Test. A stress test, sometimes called a treadmill test or exercise test, helps a doctor find out how well your heart handles work. As your body works harder during the test, it requires more oxygen, so the heart must pump more blood. The test can show if the blood supply is reduced in the arteries that supply the heart.


A total of 26 firefighters were taking part in a training exercise when part of the Duas Bocas cave collapsed in Brazil, trapping 16 of them inside. Created with …


A stress test, also called an exercise stress test, shows how your heart works during physical activity. Because exercise makes your heart pump harder and faster, an exercise stress test can reveal problems with blood flow within your heart. A stress test usually involves walking on a treadmill or riding a stationary bike while your heart ...