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In the field of medical diagnosis, there is a strong need to determine mechanical properties of biological tissue, which are of histological and pathological relevance. In order to obtain noninvasively quantitative mechanical properties of tissue, we propose in this work a new imaging modality which can be additionally used for the careful assessment of tumors in different soft tissues. This novel...
Due to cyclic heart compressions, blood inside the vascular system is forwarded batch-wise. As a result, pulse waves propagate along the arterial vessel walls and are reflected on peripheral capillaries. The reflected pulses interfere with the incoming ones and cause a resulting pulse wave with a characteristic second peak. The shape of this pulse wave depends on the stiffness of the arterial wall,...
In order to obtain quantitative mechanical properties of tissue non-invasively, we propose in this work an inverse approach by which the spatial distribution of the relative shear modulus of tissue can be estimated from the measured axial and lateral deformation using angular insonifications. Measurements on PVA phantoms and the procedure to obtain the shear modulus are described.
Coronary atherosclerosis is a common disease in industrialized countries. Acute coronary syndromes are associated with a high mortality rate. They are usually caused by a sudden occlusion of the coronary lumen due to rupture of unstable plaques in the vessel wall, often with less than 50 % stenosis. Thus, plaque morphology does not give sufficient information for determining the risk of an acute syndrome...
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