a I A e s t c c c h c p a v a m c c w w c c 1 f t n t r s m p q i n a a omputed tomography (CT) was developed or medical diagnosis more than a decade efore the introduction of magnetic resonance MR) imaging. Contrast media for CT and R imaging have identical tissue distribution nd plasma kinetics. So the story of the early istory of contrast media for cardiac magnetic esonance (CMR) actually st...

PURPOSE We aimed to evaluate computed tomography (CT) and magnetic resonance imaging (MRI) findings of cardiac calcified amorphous tumors (CATs). METHODS CT and MRI findings of cardiac CATs in 12 patients were included. We retrospectively examined patient demographics, location, size, shape configuration, imaging features, calcification distribution of tumors, and accompanying medical problem...

conclusions in most cases, the conus artery can be visualized in cardiac ct. a description of the conus artery should be a part of the standard clinical coronary ct angiography description. objectives to examine whether it is possible to visualize the conus artery in multi-slice computed tomography (ct). patients and methods in 79 consecutive patients (aged 56 ± 12.9 years; 13 women), 64-slice ...

AIM Coronary computed tomography angiography (CCTA) findings of positive remodeling (index ＞1.1) and low-attenuation plaque (＜30 Hounsfield units) are recognized as CT-verified high-risk plaque (CT-HRP). Therefore, we investigated the incremental prognostic value of evaluation of plaque characteristics using CCTA in asymptomatic patients. METHODS Overall, 495 consecutive patients without any ...

PURPOSE The aim of this study was to assess trends in utilization and Medicare coverage of cardiac CT and coronary CT angiography (CCTA). METHODS Medicare claims for cardiac CT and CCTA were identified for the first 3 complete years for which Current Procedural Terminology(®) tracking codes existed (2006-2008). The frequencies of billed and denied services were extracted on national and regio...

Benign primary cardiac neoplasms are rare but may cause significant morbidity and mortality. However, they are usually treatable and can often be diagnosed with echocardiography, computed tomography (CT), or magnetic resonance (MR) imaging. Myxomas typically arise from the interatrial septum from a narrow base of attachment. Fibroelastomas are easily detected at echocardiography as small, mobil...

A 55-year-old woman with no prior cardiac history was referred for echocardiography after a precordial murmur was discovered on routine physical examination. Transthoracic and later transesophageal (Figure 1) echocardiography revealed a secundum-type atrial septal defect (ASD) measuring 1 cm in diameter and mild mitral regurgitation with normal ejection fraction and no wall motion abnormalities...

We aim to demonstrate the application of free-breathing prospectively gated carbon nanotube (CNT) micro-CT by evaluating a myocardial infarction model with a delayed contrast enhancement technique. Evaluation of murine cardiac models using micro-CT imaging has historically been limited by extreme imaging requirements. Newly-developed CNT-based x-ray sources offer precise temporal resolution, al...

BACKGROUND We designed an innovative porcine model of ischemia-induced arrest to determine dynamic arrhythmia substrates during focal infarct, global ischemia from ventricular tachycardia or fibrillation (VT/VF) and then reperfusion to determine the effect of therapeutic hypothermia (TH) on dynamic arrhythmia substrates and resuscitation outcomes. METHODS AND RESULTS Anesthetized adult pigs u...

Manual quantitative analysis of cardiac left ventricular function using multi-slice CT is labor intensive because of the large datasets. We present an automatic, robust and intrinsically three-dimensional segmentation method for cardiac CT images, based on 3D Active Shape Models (ASMs). ASMs describe shape and shape variations over a population as a mean shape and a number of eigenvariations, w...