MaryBeth Barry

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The patellofemoral joint contains 2 complex mechanisms for ameliorating forces transmitted across it, namely increasing extensor lever arm-r in the important range of flexion 30 degrees-70 degrees and increasing contact area with increasing flexion. In this range the patella bears sole responsibility for transmitting resultant flexion of quadriceps force to(More)
Dual-energy X-ray absorptiometry (DEXA) is reported to be inferior to computed tomography (CT) to measure changes in appendicular soft tissue composition. We compared CT- and DEXA-measured thigh muscle and fat mass to evaluate the random and systematic discrepancies between these two methods. Thigh skeletal muscle area (single-slice CT) was suboptimally(More)
BACKGROUND AND PURPOSE In neuro-oncology, a major problem is clear identification of tumor from the surrounding normal tissue. We hypothesized that we could use the blood oxygen level-dependent functional MR imaging (BOLD fMRI) signals from tumors and normal brain to identify the tumors and distinguish them from the surrounding brain. MATERIALS AND(More)
We prospectively studied the effect of spironolactone, an aldosterone antagonist, on endothelial function in patients with advanced congestive heart failure (CHF) using the brachial artery reactivity method. Twenty patients optimized on conventional CHF therapy were treated with spironolactone, and brachial artery flow- mediated dilation was measured at(More)
Using arteriography as the gold standard, Color flow Doppler ultrasonography was evaluated with regard to its ability to detect peripheral vascular occlusive disease and hemodynamically significant stenosis in patients having peripheral arteriography. One hundred legs in 51 patients were compared at seven arterial segments for disease. Color flow Doppler(More)
Spontaneous coronary artery dissection is a rare and generally fatal disease. It usually occurs in women during the post-partum period or women taking oral contraceptives. Treatment depends on the clinical presentation and the results of coronary angiography. Beating heart myocardial revascularization is particularly useful in this case, as it allows(More)
In order to enhance the knowledge of the internal thoracic arteries of pig, sheep, and man, allowing to constitute a fundamental basis as for the current and later applications in the interventions in surgery of revascularization of the arteries of less than four millimetre of diameter, a biometric and histological comparative study of these arteries was(More)
OBJECTIVE To evaluate a personal-computer-based teleradiology system for the interpretation of radiologic studies from an isolated community. METHODS During a 5-month study period, 240 radiologic studies from the Grand Manan Hospital, Grand Manan, NB, were digitized and transmitted via telephone lines to the Saint John Regional Hospital, NB, for(More)
Coronary retroperfusion with the object of delivering oxygenated blood to the ischemic myocardium might be defined as the process of withdrawing blood from a systemic artery and reinjecting it into the coronary sinus. A diastolic synchronized retroperfusion catheter-pump system is presented and feasibility of achieving retrograde infusion of arterial blood(More)