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CONTEXT Recent studies suggest an association between vitamin D activity and cardiometabolic risk. OBJECTIVE We investigated vitamin D status and its association with subclinical atherosclerosis in a population-based cohort study, the Korean Longitudinal Study on Health and Aging (KLoSHA). PARTICIPANTS Participants were 439 men and 561 women aged 65 yr(More)
Radiation exposure to the patient has become a concern for the radiologist in the multidetector computed tomography (CT) era. With the introduction of faster multidetector CT scanners, various techniques have been developed to reduce the radiation dose to the patient; one method is automatic exposure control (AEC). AEC systems make use of different types of(More)
Pericardial fat surrounding the heart and coronary arteries might aggravate vessel wall inflammation and stimulate the progression of coronary atherosclerosis. However, there has been little comprehensive evaluation of the effects of pericardial fat on coronary artery disease (CAD). We investigated the relationship between pericardial fat volume and the(More)
OBJECTIVE To assess the distribution of pressure and shear-related forces acting on atherosclerotic plaques and their association with lesion characteristics using coronary CT angiography (cCTA)-based computational fluid dynamics (CFD) model of epicardial coronary arteries. METHODS Patient-specific models of epicardial coronary arteries were reconstructed(More)
OBJECTIVES To evaluate the effect of nitroglycerin on the diagnostic accuracy of electrocardiogram-gated coronary computed tomography (CT) angiography in patients with suspected coronary artery disease. METHODS Computed tomography angiography was performed on 76 patients using a 16-slice CT scanner. Forty-six patients received a sublingual nitroglycerin 1(More)
OBJECTIVES The purpose of this study was to evaluate the prevalence of occult coronary artery disease (CAD) with coronary computed tomography angiography (CTA) to characterize plaque composition and to evaluate the potential of this new technology to impact risk stratification in asymptomatic middle-aged subjects. BACKGROUND There is a paucity of(More)
The purpose of this study was to determine what proportion of patients with an abdominal aortic aneurysm (AAA) would be eligible for endovascular aneurysm repair (EVAR) and to examine the major determinants for suitability of EVAR with the currently available indications. We retrospectively reviewed 3-D reconstructed computed tomography angiography of 88(More)
The popularization of computed tomography (CT) in clinical practice and the introduction of mass screening for early lung cancer with the use of CT have increased the frequency of findings of subtle nodules or nodular ground-glass opacity. Nodular ground-glass opacity may be observed in malignancies such as bronchioloalveolar carcinoma and adenocarcinoma,(More)
BACKGROUND Persistent false lumen in the descending aorta after repair of acute type I dissection adversely affects long-term prognosis. In this study, we investigated changes of the descending aortic false lumen during the midterm postoperative period. METHODS Postoperative computed tomographic (CT) images of 122 patients who underwent conventional(More)
OBJECTIVES The purpose of this study is to assess the independent association between early CKD (stages 1-3a) with coronary atherosclerosis and the feasibility of risk stratification of coronary atherosclerosis according to The Kidney Disease Outcomes Quality Initiative (K/DOQI) guidelines using non-invasive coronary angiography. METHODS We consecutively(More)