2009 Fiscal Year Final Research Report

Development of a less invasive treatment for varicose veins with high intensity focused ultrasound

Research Project

Project/Area Number	19591474
Research Category	Grant-in-Aid for Scientific Research (C)
Allocation Type	Single-year Grants
Section	一般
Research Field	General surgery
Research Institution	The University of Tokyo
Principal Investigator	MIYATA Tetsuro The University of Tokyo, 医学部附属病院, 准教授 (70190791)
Co-Investigator(Kenkyū-buntansha)	SHIGEMATSU Kunihiro 東京大学, 医学部附属病院, 助教 (20215966) KIMURA Hideo 東京大学, 医学部附属病院, 助教 (60327070) KOYAMA Hiroyuki 東京大学, 医学部附属病院, 特任准教授 (10241994) MATSUMOTO Yoichiro 東京大学, 工学部, 教授 (60111473)
Project Period (FY)	2007 – 2009
Keywords	HIFU / 下肢静脈瘤 / 無侵襲治療
Research Abstract	The basic studies to develop a less invasive treatment for varicose veins with HIFU were performed. When HIFU was exposed to the dilatate vein, the enough heat dose to denature the vein was not gained. When the vein was compressed to remove the internal liquid, the significant coagulated necrosis of the vein was generated. In order to consider the exposure parameters for in-vivo experiment, the temperature distribution was predicted with bio-heat transfer equation. Then, the subcutaneous injection was useful to improve the location between epidermis and the focus of HIFU. With the result of their experiment, the coagulate necrosis of external jugular vein was generated without skin burn.

(4 results)