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CT和超声图象都能作肿瘤定位进行穿刺活检。用CT活检,针能在肿块内看到。在B型超声图象,肿瘤内看不到穿刺针,故不能肯定活检的精确部位。作者提出了精确测定穿刺针尖和活检部位的空气声学造影法。材料和方法:作者使用标准的B型超声显象仪,作了9例病人的穿刺活检。肿块由B型超声显象定位,确定穿刺部位及深度,穿刺点作标记,皮肤消毒,在局麻下插入穿刺针,如果拔除针心无出血,经结核菌素试验的注射器注入0.3～0.5毫升空气(空气太多可掩盖病变、太少可能难以观察),然后常规穿刺活检。穿刺部位止血后,病人又能作
CT and ultrasound images can be used for tumor localization biopsy. With CT biopsy, the needle can be seen in the mass. B-mode ultrasound images, the tumor can not see the needle, it can not be sure the exact location of the biopsy. The authors propose an air-acoustography method that accurately measures the puncture tip and biopsy site. Materials and Methods: The authors performed a biopsy of 9 patients using a standard B-mode sonographer. The tumor was located by B-mode sonography to determine the puncture site and depth, the puncture point was marked, the skin was disinfected, and the puncture needle was inserted under local anesthesia. If the needle was removed without bleeding, the syringe injected with tuberculin test was injected with 0.3-0.5 ml Air (too much air can mask the lesion, too little may be difficult to observe), and then a routine biopsy. Puncture site to stop bleeding, the patient can do