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Updated: Sep 14, 2026

Protocol for Relative Hydrodynamic Assessment of Tri-leaflet Polymer Valves
Published on: October 17, 2013
Thrombus-Induced Prosthetic Valve Dysfunction Demonstrating Hypo-Attenuated Leaflet Thickening: A Case Report
Takanori Kono1, Kazuyoshi Takagi1, Yusuke Shintani1
1Division of Cardiovascular Surgery, Department of Surgery Kurume University Fukuoka Japan.
Abstract:
Hypo-attenuated leaflet thickening (HALT) is an important and potentially underrecognized cause of late bioprosthetic valve dysfunction after surgical AVR. Multimodal imaging, including echocardiography and electrocardiogram-gated computed tomography, is essential for diagnosis, and timely surgical or medical intervention can effectively restore valve function and improve clinical outcomes.
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