CAJ | 학술논문

该文研究了一种治疗超声探头坐标系统在磁共振中的定标方法,该方法首先在超声探头边沿加工6个定位槽或附着于探头边沿并垂直于探头表面的定位圆柱体作为定位标记物,将6个定位标记物两端12个圆心作为定位标记点,通过计算所有定位标记点在磁共振中的空间三维坐标,得到治疗超声探头与磁共振三维坐标系统的换算关系.另外,利用定位标记点的冗余信息,可以减少超声探头的定位误差,提高定位精度.
해문연구료일충치료초성탐두좌표계통재자공진중적정표방법,해방법수선재초성탐두변연가공6개정위조혹부착우탐두변연병수직우탐두표면적정위원주체작위정위표기물,장6개정위표기물량단12개원심작위정위표기점,통과계산소유정위표기점재자공진중적공간삼유좌표,득도치료초성탐두여자공진삼유좌표계통적환산관계.령외,이용정위표기점적용여신식,가이감소초성탐두적정위오차,제고정위정도.
This paper provides a method of positioning the ultrasound probe in MR system. Machining 6 slots or cylinder perpendicular to the ultrasound probe surface on the edge of ultrasound probe as markers, 12 central cylinder ends are chosen as positioning points. By calculating these positioning points’ coordinates in MR’s coordinate system, the coordinate transformation between the ultrasound and MR coordinate system can be computed. Furthermore, by taking advantage of redundant information, calculating errors can be reduced and the precision can be improved.