摘要
142例术前作了超声检查的急性阑尾炎病人均由手术和病理证实。结果显示假阴性14.08%,无假阳性,敏感性84.51%。作者对假阴性的原因作了分析。认为阑尾B超探查时,宜先用3.5MHz探头作大范围扫查,然后用5.0MHz高频率探头作局部仔细观察。运用平面扇形扫描、逐步加压、十字交叉中心定位等方法可更有效地辨认阑尾。强调扫描时应尽量显示阑尾的全长,注意观察其盲端的改变。
Preoperative ultrasonography was performed in 142 patients with acute appendicitis, and confirmed by operation and pathology. The results shown that rate of false - negative was 14. 08% ,no false -positive, the sensitivity was 84. 51%. The causes leading to a false - negative diagnosis were analysed. A 3. 5MHz probe was used for initial screening in larger area first, and then a 5MHz higher frequence transducer was used for local scan during the examination. Appendix can be identified effectively by the methods such as plan-sector scan, graded compression and cross locating. It is important to visualize as fully as possible and note the change of the appendiceal tip.
出处
《临床超声医学杂志》
1994年第4期146-148,共3页
Journal of Clinical Ultrasound in Medicine
关键词
急性
阑尾炎
超声波诊断
B超
Acute appendicitis B-mode ultrasound Scan technique
