title: Intraoperative ultrasonography in hepatobiliary surgery.
abstract: OBJECTIVE
  To assess the value of intraoperative ultrasonography in hepatobiliary surgery.
  
  
  METHODS
  Aloka-650 and Aloka-500 with a 3.5 MHz probe were used in preoperative ultrasonography and those with 5 MHz or 7.5 MHz probes in intraoperative ultrasonography. All patients with carcinoma were confirmed pathologically.
  
  
  RESULTS
  In 44 patients with liver cancer (76 tumors), the diagnostic rate of intraoperative ultrasonography was 97% (74/76), which was markedly higher than 84% (64/76) of preoperative ultrasonography (P<0.05). The diagnostic rate (92%; 22/24) of intraoperative ultrasonography for tumors </=2 cm in diameter was markedly higher than that (54%; 13/24) of preoperative ultrasonography (P<0.01). The diagnostic rate (94%; 16/17) of intra-operative ultrasonography for tumor embulus of the vein was also markedly higher than that (53%; 9/17) of preoperative ultrasonography (P<0.01). The diagnostic rates of intraoperative and preoperative ultrasonography for cholelithiasis were 99% (108/109) and 97% (106/109) respectively (P>0.05). Yet the diagnostic rate (100%; 12/12) of intraoperative ultrasonography for gallbladder carcinoma was markedly higher than that (66.7%; 8/12) of pre-operative ultrasonography (P<0.05). The diagnostic rates of intraoperative ultrasonography for choledocholith and biliary tract cancer were all 100%, markedly higher than those (83%; 20/24 and 75%; 12/16) of preoperative ultrasonography (P<0.05).
  
  
  CONCLUSIONS
  Intraoperative ultrasonography can raise the detective rate of the liver occupying lesions comparing with that of preoperative untrasonography. It is of valuable in selecting operative scheme and locating small lesions.
authors: Fujian Provincial Institute of Ultrasonic Medicine, Union Hospital, Fujian Medical University, Fuzhou 350001, China. unionlin@publ.fz.fj.cn
authors: Li-Wu
authors: LW
authors: Lin
authors: Zhen
authors: Z
authors: Ye
authors: En-Sheng
authors: ES
authors: Xue
authors: Shang-Da
authors: SD
authors: Gao
authors: Yi-Mi
authors: YM
authors: He
mesh_terms: D000328:Adult; D000368:Aged; D001652:Bile Ducts / Q000000981:diagnostic imaging / Q000601:surgery*; D001660:Biliary Tract Diseases / Q000000981:diagnostic imaging* / Q000601:surgery*; D005260:Female; D005706:Gallbladder Neoplasms / Q000000981:diagnostic imaging / Q000601:surgery; D006801:Humans; D007430:Intraoperative Care; D008099:Liver / Q000000981:diagnostic imaging / Q000601:surgery*; D008113:Liver Neoplasms / Q000000981:diagnostic imaging* / Q000601:surgery*; D008297:Male; D008875:Middle Aged; D011300:Preoperative Care; D014463:Ultrasonography