Evaluation of the layered structure of aortic valve cusps using high-frequency ultrasound

被引：0
|
作者：
Qiu, Q [1 ]
Dunmore-Buyze, J [1 ]
Boughner, DR [1 ]
Lacefield, JC [1 ]
机构：
[1] Univ Western Ontario, Robarts Res Inst, London, ON, Canada
来源：
2004 IEEE Ultrasonics Symposium, Vols 1-3 | 2004年
关键词：
ultrasonography; micro-imaging; bioprosthetic heart valves; morphological filtering; image segmentation;
D O I：
暂无
中图分类号：
O42 [声学];
学科分类号：
070206 ; 082403 ;
摘要：
High-frequency ultrasound techniques are described for estimating the dimensions of the fibrosa, spongiosa, and ventricularis layers in aortic valve cusp specimens. Top hat and bottom hat transformations are applied to enhance the contrast of the layers in B-mode images. A modified discrete dynamic contour deformable model is implemented to detect the layer boundaries. The algorithm is demonstrated via measurements of osmotic swelling of the valve cusp layers produced by submerging the specimens in distilled water.
引用
收藏
页码：610 / 613
页数：4
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