Lawrence M. Boxt

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Anyone who has investigated the problem of blood flow has consulted (and more likely dog-eared) D. A. McDonald ' s Blood Flow in Arteries. It is a lucid text which provides the reader with the historical, mechanical , biological, as well as technological background for our current understanding of blood flow and its measurement . It is a tribute to Dr.(More)
The increasing use of coronary computed tomography angiography (CCTA) requires the establishment of standards meant to ensure reliable practice methods and quality outcomes. The Society of Cardiovascular Computed Tomography Guidelines Committee was formed to develop recommendations for acquiring, interpreting, and reporting these studies in a standardized(More)
BACKGROUND African Americans have a lower resting energy expenditure (REE) relative to fat-free mass (FFM) than do whites. Whether the composition of FFM at the organ-tissue level differs between African Americans and whites and, if so, whether that difference could account for differences by race in REE are unknown. OBJECTIVE The objectives were to(More)
OBJECTIVES This study was designed to test the accuracy of nuclear magnetic resonance (NMR) imaging as a noninvasive technique for estimating right ventricular mass in normal subjects and in patients with primary pulmonary hypertension. BACKGROUND An accurate means of noninvasively estimating right ventricular mass may allow better characterization of the(More)
BACKGROUND The extent to which adipose tissue (AT) distribution is different between persons with type 2 diabetes (T2DM) and nondiabetic control subjects remains unclear. OBJECTIVE The aim of this study was to establish whether total body adiposity and its distribution, quantified by using state-of-the-art whole-body magnetic resonance imaging, differs(More)
Two-dimensional echocardiographic methods of left ventricular volume computation are limited by geometric assumptions and image plane positioning error in the nonvisualized dimension. We evaluated a three-dimensional (3D echocardiographic method that addresses these limitations. Our method uses a volume computation algorithm based on polyhedral surface(More)
Autopsy/cadaver data indicate that many organs and tissues are smaller in the elderly compared with young adults; however, in vivo data are lacking. The aim of this study was to determine whether the mass of specific high-metabolic-rate organs is different with increasing age, using MRI. Seventy-five healthy women (41 African-Americans and 34 Caucasians,(More)
The focus to date of MDCT has been primarily on CT applications for evaluating the coronary arteries, notably the measurement of coronary artery calcification, plaque characterization, and atherosclerotic lumen stenosis. This is because of the limited temporal resolution of CT, and the recent rapid improvements in MRI for cardiac applications. However, if(More)
Direct visualization of pathologic changes in the heart has significantly influenced the diagnostic accuracy and management of patients with cardiovascular disease. This article presents an approach to plain film examination of the heart based on basic principles of radiologic evaluation. It emphasizes the relationship between the radiologic appearance of a(More)
  • L M Boxt
  • Magnetic resonance imaging clinics of North…
  • 1996
Patients with congenital heart disease often require mild sedation for the performance of their examination. If adequate monitoring of systemic oxygen saturation and heart rate is performed, then these patients may be adequately studied by MR imaging. Cardiac examination using spin echo pulse sequences provides morphologic information that allows evaluation(More)