Objective To evaluate the accuracy of visual analysis and of the coronary artery calcium (CAC) score in nontriggered computed tomography (CT), in comparison with that of the CAC score in electrocardiogram-triggered CT, in identifying coronary calcification. Materials and Methods A total of 174 patients for whom CT was indicated for CAC scoring underwent nontriggered and triggered CT in a 64-c...

A 2-year-old girl in whom a cardiac murmur had been detected at the age of 4 months underwent physical examination. She had no cyanosis, but a continuous murmur was detected. The murmur was centered in the 4th right intercostal space and radiated vertically. The echocardiogram showed right coronary artery (RCA) dilation. We sedated the patient and obtained computed tomographic (CT) images by us...

This paper provides an extensive runtime, accuracy, and noise analysis of Computed Tomography (CT) reconstruction algorithms using various High-Performance Computing (HPC) frameworks such as: “conventional” multi-core, multi threaded CPUs, Compute Unified Device Architecture (CUDA), and DirectX or OpenGL graphics pipeline programming. The proposed algorithms exploit various built-in hardwired f...

Purpose: To compare multidetector computed tomography (MDCT) angiography &colour flow imaging (USG)in evaluation of patients with peripheral arterialdiseases. Also evaluate the role MDCT in providing information regarding collateral circulation in peripheral arterial diseases and aiding treatment planning in peripheral arterial diseases. Material and methods: CT angiography performed with “Bril...

UNLABELLED Conventional radiography has shown limitation in acquiring image of the ATM region, thus, computed tomography (CT) scanning has been the best option to the present date for diagnosis, surgical planning and treatment of bone lesions, owing to its specific properties. OBJECTIVE The aim of the study was to evaluate images of simulated bone lesions at the head of the mandible by multis...

Themathematical principles of computed tomography (CT) were first investigated by J. Radon [28] as early as 1917 and were later extended to complex fields by Kirillov [22]. The first application of tomography was, surprisingly, in radio astronomy [2], and today, it finds usage in diverse fields such as medical imaging, seismology, and underwater acoustic imaging. In medical imaging, CT has had ...

Methods Ten thoracic CT scans (TCMD General Electric LightSpeed VCT 64 Slices) of octogenarian subjects were analysed by two radiologists and one vascular surgeon, using the Osirix Pro Software. A 3D reconstruction of the ascending thoracic aorta was obtained from the annular plane to the origin of the innominate trunk. The outer curvature maximal length was measured; therefore this value was d...