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目的研究术中超声对肝脏肿瘤患者手术治疗的作用。方法应用５．０－ＭＨｚ特殊超声探头，对４９例患肝脏肿瘤或其他疾病可疑肝脏转移肿瘤的患者在开腹探查手术中进行术中超声检查。根据术前影像学检查（包括体外经皮超声、核磁共振成像和计算机断层扫描）及术中评定（包括肉眼观察、双手触诊及术中超声），对术前影像学检查与术中超声方法进行对比分析。结果术中超声、体外经皮超声、计算机断层扫描、核磁共振成像的敏感性分别为１００％（２３／２３）、７４％（１７／２３）、７４％（１４／１９）和７５％（６／８），特异性分别为１００％（２６／２６）、１００％（２６／２６）、９３％（１４／１５）和６７％（２／３）。７例（１４％）肝脏肿瘤患者经术中望诊、触诊均未发现病灶，仅靠术中超声检查才得以确定。结论术中超声是检查发现肝脏肿瘤的最敏感、特异的方法，它有助于肝脏肿瘤，尤其是肝脏隐匿性或微小病灶（＜２ｃｍ）的手术治疗。
Objective To study the effect of intraoperative ultrasound on surgical treatment of liver tumors. Methods A special 5.0-MHz ultrasound probe was used to perform intraoperative ultrasonography in 49 patients with hepatic tumor or other suspected liver metastases. According to preoperative imaging examination (including in vitro percutaneous ultrasound, magnetic resonance imaging and computed tomography) and intraoperative assessment (including macroscopic observation, two-hand palpation, and intraoperative ultrasound), preoperative imaging examination and intraoperative ultrasound methods Conduct comparative analysis. Results The sensitivities of intraoperative ultrasound, in vitro percutaneous ultrasound, computed tomography, and magnetic resonance imaging were 100% (23/23), 74% (17/23), 74% (14/19), and 75% (6). /8) The specificities were 100% (26/26), 100% (26/26), 93% (14/15), and 67% (2/3), respectively. In 7 cases (14%) of patients with hepatic tumors, no lesions were found during the operation and palpation. Only the intraoperative ultrasound examination was able to determine the lesions. Conclusions Intraoperative ultrasound is the most sensitive and specific method for detecting liver tumors. It is helpful for liver tumors, especially the surgical treatment of occult or minimally focal lesions (<2 cm).