A型超声探测纵向分辨力的测量方法改进  

Improvement on the method to survey the longitudinally resolving power by amplitude modulation

作　　者：吴祖明[1] 

机构地区：[1]广东医学院医用物理学教研室,广东湛江524023

出　　处：《物理实验》2004年第9期47-48,共2页Physics Experimentation

摘　　要：按《医学影像物理学实验》教材给出的A型超声探测的纵向分辨力的测量方法 ,第二个界面的回波难以显示 ,因而给测量带来困难 .本文将水盘内两玻片在探头轴线位置上“一前一后”放置改为“相对探头轴线左右错开”放置 。As presented in the textbook, it is difficult to determine the longitudinally resolving power by amplitude modulation. The second-echo can not display directly. The two slides in water plate are alternated respective to the axis, instead of at the same line. The measurement relults is direct-viewed and can be repeated very well.

关 键 词：医学教学 《医学影像物理学实验》 A型超声探测 分辨力 回波 声像图 

分 类 号：R445-4[医药卫生—影像医学与核医学] O426.2[医药卫生—诊断学]