نتایج جستجو برای: cardiac ct
تعداد نتایج: 405058 فیلتر نتایج به سال:
Background: Cardiac CT imaging is gaining in popularity. When imaging the heart with CT, additional structures are visualized, including the lungs. Whether the lung fields should be evaluated during cardiac CT imaging is controversial. Some cardiology groups believe that analyzing the lung fields will only lead to increased patient anxiety and increased costs without clinical benefit. Objective...
I t seems not long ago that invasive coronary angiography was considered as the undisputed diagnostic standard and management determining test for patients with ischemic heart disease. Registry data have shown that reliance on noninvasive testing for myocardial ischemia, positioned as a gatekeeper to restrict referral to the catheterization laboratory, is far from optimal in clinical practice. ...
Introduction:Myocardial 18F-FDG uptake is highly variable in oncologic whole body 18F-FDG PET/CT studies, ranging from quite intense to minimal distribution. Intense or heterogeneous myocardial 18F-FDG uptake is undesirable as it may interfere with the visual or quantitative evaluation of tumoral invasion and metastases in pericardium, myocardiu...
OBJECTIVE The aim of this study was to investigate physiological changes in cardiac area and diameters between inspiratory and expiratory chest computed tomography (CT), and to assess their correlation with lung size change and influence on cardiothoracic ratio (CTR) measurements. MATERIALS AND METHODS The institutional review board of our institution approved this study, and informed consent...
BACKGROUND Computed tomography-adapted Leaman score (CT-LeSc) was developed to quantify coronary CT angiography information about atherosclerotic burden (lesion localization, stenosis degree, and plaque composition). The objective of the study is to evaluate CT-LeSc long-term prognostic value in patients with suspected coronary artery disease (CAD). METHODS AND RESULTS Single-center prospecti...
Cardiovascular disease is a leading cause of morbidity and mortality in the world. Cardiovascular imaging technique is a key for cardiovascular disease diagnosis and treatment. In coronary imaging, the cardiac CT is of high spatial and temporal resolution. Compared with other medical imaging modality, the cardiac CT has a unique advantage in coronary stenosis detection, plaque assessment and st...
SPECT-CT is an imaging method for diagnosing diseases and studying physiology of the body. In this type of imaging, due to the use of radiopharmaceutical for imaging (SPECT) and X-rays (CT), a relatively high dose of radiation is introduced into the patient. If the patient is pregnant, considering that the developing fetus is sensitive to any radiation in the uterus throughout the entire period...
Phase-correlated CT, as it is used for cardiac imaging, is the most popular and the most important but also the most demanding special CT application in the clinical routine, today. Basically, it fulfills the four-dimensional imaging task of depicting a quasiperiodically moving object at any desired motion phase with significantly reduced motion artifacts. Although image quality with phase-corr...
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