Lung scan is an accurate and noninvasive tool for evaluating the distribution of lung perfusion. We present a rare case total absence perfusion on to right with two contralateral defects due severe occlusion pulmonary artery, as well segmental arteries in left young female woman diagnosed Takayasu Arteritis. highlight similarities findings between arteritis disease thromboembolic importance car...

Introduction: Hypertrophic cardiomyopathy (HCM) belongs to the very heterogeneous group of cardiomyopathies. This study aimed myocardial perfusion abnormalities on scintigraphy and assess risk sudden death from ventricular arrhythmia in hereditary sarcomeric HCM. Patients Methods: is a retrospective prospective descriptive over 18 months (January 01, 2021, July 31, 2022) records patients with d...

Dual-energy computed tomography (DECT) angiography of the chest provides a combined morphological and functional analysis of the lung, usually obtained in a single acquisition without extra radiation or injection of extra intravenous iodine contrast. The parenchymal iodine maps generated by DECT are well correlated with scintigraphy, and are becoming an essential tool for evaluating patients wi...

OBJECTIVE The optimization of medical exposure is one of the major issues regarding radiation protection in the world, and The International Committee of Radiological Protection and the International Atomic Energy Agency recommend establishing diagnostic reference levels (DRLs) as tools for dose optimization. Therefore, the development of DRLs based on the latest survey has been required for nu...

STUDY OBJECTIVE To compare digital to conventional film-screen pulmonary angiography for the diagnosis of acute pulmonary embolism (PE) in a clinical population. DESIGN Retrospective review of patient data, ventilation/perfusion (V/Q) lung scintigraphy reports, and pulmonary angiographic reports. SETTING University hospital, division of interventional radiology. PATIENTS AND METHODS Patie...

We observed increased lung thallium-201 (201T1) activity on initial stress myocardial images in patients with coronary artery disease (CAD). To assess the clinical significance of this finding, initial and 2hour delayed 201T1 images were stored in a computer immediately after supine stress testing in 49 patients (39 with CAD and 10 controls). Regions of interest over the heart and lung were sel...

Stress cine function and vasodilating stress perfusion are commonly used approaches for the evaluation of ischemic heart disease. Both imaging approaches, using either stress echocardiography or stress nuclear scintigraphy, have stood the test of time as highly accurate in diagnosing coronary artery stenosis and as prognostic tools in patients with symptoms suspicious of myocardial ischemia.1,2...

Stress cine function and vasodilating stress perfusion are commonly used approaches for the evaluation of ischemic heart disease. Both imaging approaches, using either stress echocardiography or stress nuclear scintigraphy, have stood the test of time as highly accurate in diagnosing coronary artery stenosis and as prognostic tools in patients with symptoms suspicious of myocardial ischemia.1,2...

The short half-life positron emitter 13N, as labeled ammonia (13NH4+), was evaluated as a myocardial imaging agent. Regional myocardial uptake of 13NH4 correlated with the distribution of labeled microspheres in experimental myocardial infarction. Using intravenous 13NH4+, myocardial scintigraphy was performed in 85 cardiac patients and 27 normal subjects. Ninety-five scintigrams were suitable ...