Geoffrey D. Rubin

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1. Coronary Artery Calcification and Epidemiology of Coronary Calcium . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1764 1.1. Calcium Detection Methods . . . . . . . . . . . . . . .1765 1.1.1. EBCT Methods . . . . . . . . . . . . . . . . . . . .1765 1.1.2. MDCT Methods . . . . . . . . . . . . . . . . . . .1766 1.2. Coronary Artery Calcified(More)
We developed a novel computer-aided detection (CAD) algorithm called the surface normal overlap method that we applied to colonic polyp detection and lung nodule detection in helical computed tomography (CT) images. We demonstrate some of the theoretical aspects of this algorithm using a statistical shape model. The algorithm was then optimized on simulated(More)
PURPOSE To compare the performance of radiologists and of a computer-aided detection (CAD) algorithm for pulmonary nodule detection on thin-section thoracic computed tomographic (CT) scans. MATERIALS AND METHODS The study was approved by the institutional review board. The requirement of informed consent was waived. Twenty outpatients (age range, 15-91(More)
American College of Cardiology Foundation Representative; †Amercan Society of Nuclear Cardiology Representative; ‡Society of Cardioascular Computed Tomography Representative; §Society of Atheroclerosis Imaging and Prevention Representative; American College of adiology Representative; ¶American Heart Association Representaive; #North American Society for(More)
PURPOSE To use perspective volume rendering (PVR) of computed tomographic (CT) and magnetic resonance (MR) imaging data sets to simulate endoscopic views of human organ systems. MATERIALS AND METHODS Perspective views of helical CT and MR images were reconstructed from the data, and tissues were classified by assigning color and opacity based on their CT(More)
PURPOSE To determine the clinical importance of the bird-beak configuration after thoracic endovascular aortic repair (TEVAR). MATERIALS AND METHODS The institutional review board approved this retrospective study and waived the requirement to obtain informed consent from patients. Sixty-four patients (40 men, 24 women; mean age, 64 years) who underwent(More)
PURPOSE To assess the patterns of lower extremity arterial inflow and runoff opacification with four-channel multi-detector row computed tomographic (CT) angiography in a cohort of patients with disease warranting imaging of the lower extremity arterial system. MATERIALS AND METHODS Twenty-four patients with symptomatic lower extremity arterial occlusive(More)
In this paper, a novel technique for rapid and automatic computation of flight paths for guiding virtual endoscopic exploration of three-dimensional medical images is described. While manually planning flight paths is a tedious and time consuming task, our algorithm is automated and fast. Our method for positioning the virtual camera is based on the medial(More)
OBJECTIVE The purpose of this study was to determine the value of reformatted noncontrast helical CT in patients with suspected renal colic. We hoped to determine whether this technique might create images acceptable to both radiologists and clinicians and replace our current protocol of sonography and abdominal plain film. SUBJECTS AND METHODS(More)
PURPOSE To evaluate the accuracy of computed tomographic (CT) angiography in the detection of renal artery stenosis (RAS). MATERIALS AND METHODS CT angiography was performed in 31 patients undergoing conventional renal arteriography. CT angiographic data were reconstructed with shaded surface display (SSD) and maximum-intensity projection (MIP). Stenosis(More)