Gerald M. Lawrie

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BACKGROUND Whether cardioinhibitory cytokines are elevated in regions of hibernating myocardium and account in part for the depression in resting function is currently not known. Methods and Results- Thirteen patients with stable ischemic ventricular dysfunction scheduled for bypass surgery underwent preoperative dobutamine echocardiography (DE) and(More)
The purpose of this paper is to evaluate the capability of feature space analysis (FSA) for quantifying the relative volumes of principal components (thrombus, calcification, fibrous, normal intima, and lipid) of atherosclerotic plaque tissue in multicontrast magnetic resonance images (mc-MRI) acquired in a setup resembling clinical conditions ex vivo.(More)
BACKGROUND Advanced atherosclerotic lesions are commonly characterized by the presence of calcification. Several studies indicate that extensive calcification is associated with plaque stability, yet recent studies suggest that calcification morphology and location may adversely affect the mechanical stability of atherosclerotic plaques. The underlying(More)
Accumulation of lipids in atherosclerotic plaques causes progressive narrowing of the arterial lumen, often followed by thrombosis and ischemia. Currently several different methods, most requiring disruption of the plaque, are used to study the physical properties of lipids accumulated in plaques, and lipid composition is typically determined by chemical(More)
Two screw-in intramyocardial electrodes were inserted in the left ventricle of each of 6 mongrel dogs, and the electrical characteristics were studied over a six-month period. The unipolar lead configuration had consistently better threshold and sensing values than the bipolar configuration during this period. Peaking between implantation and 3 weeks later,(More)
From 1967 to 1979, 25 patients (pts) were operated on for fibromuscular disease (FMD) of the internal carotid artery (ICA). Eleven patients (44%) had transient weakness of an extremity, 4 had amaurosis fugax and 6 (24%) had an asymptomatic carotid bruit. Bilateral carotid arteriography showed significant stenotic lesions in 23 pts (92%) (bilateral in 10),(More)
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