OBJECTIVES The purpose of this study was to evaluate the image quality and diagnostic accuracy of very low-dose, dual-source computed tomography (DSCT) angiography for the evaluation of coronary stents. BACKGROUND Iterative reconstruction (IR) leads to substantial reduction of image noise and hence permits the use of very low-dose data acquisition protocols in coronary computed tomography ang...

George Lazarides, ∗ Roberto Ruiz de Austri, † and Roberto Trotta ‡ Physics Division, School of Technology, Aristotle University of Thessaloniki, Thessaloniki 54124, Greece University of Sheffield, Department of Physics and Astronomy, Hicks Building, Hounsfield Road, Sheffield S3 7RH, England Département de Physique Théorique, Université de Genève, 24 quai Ernest Ansermet, 1211 Genève 4, Switzer...

Adrenal masses that are found incidentally should be evaluated with both imaging and hormonal studies. The attenuation coefficient on noncontrast computed tomography (CT), expressed in Hounsfield units (HU), is better than tumor size in differentiating adrenal adenomas and hyperplastic lesions from nonadenomas. All patients should undergo hormonal evaluation for Cushing syndrome and pheochromoc...

Fig. 1. Transthoracic Doppler echocardiography revealing severe obstruction of themechanical valve (A). The cause of obstruction could not be visualised by trans-oesophageal echocardiography (B). Multiplanar reformatted images on contrast-enhanced 64-slice multidetector CT clearly depict a circular mass (arrows) with high HU values involving both atrial (C) and ventricular (D) sides of mechanic...

BACKGROUND AND PURPOSE A noninvasive method with high reliability and accuracy comparable to transesophageal echocardiography for identification of left atrial appendage thrombus would be of significant clinical value. The aim of this study was to assess the diagnostic performance of a dual-enhanced cardiac CT protocol for detection of left atrial appendage thrombi and for differentiation betwe...

OBJECTIVE Acute subdural hematoma (ASDH) patients are treated conservatively or surgically according to the guidelines for surgical treatment. Many patients with thin ASDH and mild neurologic deficit are managed conservatively, but sometimes aggravation of thin ASDH to chronic subdural hematoma (CSDH) results in exacerbated clinical symtoms and consequently requires surgery. The aim of this stu...

BACKGROUND Visceral adipose tissue (VAT) and subcutaneous adipose tissue (SAT) vary in volume and quality. We evaluated whether fat volume or attenuation (indirect measure of quality) predicts metabolic risk factor changes. METHODS AND RESULTS Framingham Heart Study Multi-detector Computed Tomography Substudy participants (n=1730, 45% women) were followed up over a mean of 6.2 years. Baseline...