In this paper we present a new approach for quantitative analysis of myocardial perfusion SPECT studies and assessment of myocardium defect regions. Myocardial perfusion SPECT is widely used in the evaluation of post-infarction patients, in order to foretell the patients’ future conditions. Our approach is based on the use of polar maps, a two-dimensional plot of the reconstructed volume from t...

OBJECTIVES This study evaluated the diagnostic value of dipyridamole plus low level treadmill exercise (dipyridamole stress) thallium-201 single-photon emission computed tomography (SPECT) in patients taking antianginal drugs. BACKGROUND Dipyridamole stress is the major substitute for maximal exercise in patients referred for myocardial perfusion imaging. Although antianginal drugs are common...

Objective(s): Radiation therapy for breast cancer can induce myocardial capillary injury and increase cardiovascular morbidity and mortality. A prospective cohort was conducted to study the prevalence of myocardial perfusion abnormalities following radiation therapy of left-sided breast cancer patients as compared to those with right–sided cancer. Methods: To minimize potential confounding fact...

introduction: in patients with cardiac artery disease, a myocardial perfusion scan, which is a non-invasive method, is utilized. this study is conducted to develop an advantageous software applicable to quantitative myocardial spect perfusion. material and methods: each cross-section of the left ventricle was segmented by applying a fuzzy clustering method. after obtaining the myocardial skelet...

UNLABELLED The present study assessed left ventricular performance during dobutamine stress measured using gated SPECT, and compared the results to myocardial perfusion and fatty acid metabolism. METHODS Thirty-six patients with myocardial infarction given (99m)Tc-sestamibi or (99m)Tc-tetrofosmin were examined by gated SPECT at rest and during dobutamine stress (4-20 microg x kg(-1) x min(-1)...

Received 9/25/2009; revised 10/21/2009; accepted 10/23/2009. For correspondence and reprints contact: Hsiu-Lan Chu, Department of Nuclear Medicine, Kaohsiung Medical University Hospital. 100 Tzyou 1st Road, San-Ming District, Kaohsiung 807, Taiwan. Tel: (886)7-3121101 ext. 7152, Fax: (886)73117521, E-mail: [email protected] Purpose: The aim of this study was to compare the estimated LVEF be...

AIM To compare the accuracy of exercise stress myocardial perfusion single photon emission computed tomography (SPECT) imaging for the diagnosis of coronary artery disease in patients with and without hypertension. METHODS A symptom limited bicycle exercise stress test in conjunction with 99m technetium sestamibi or tetrofosmin SPECT imaging was performed in 332 patients (mean (SD) age, 57 (1...

Introduction: We aimed to investigate of effect of left bundle branch block (LBBB) on perfusion and functional parameters in dipyridamole Tc99m-MIBI gated myocardial perfusion SPECT which may be helpful in interpretation of myocardial perfusion imaging. Methods: We studied 70 patients with low pre-test probability of coronary artery disease in two groups:  35 patients with LBBB and  35 subject...