B-mode ultrasonic scanning

例句：

1. 1. The doctor used a B-mode ultrasonic scanner to examine the patient's heart.
   医生使用B型超声扫描仪检查患者的心脏。
2. 2. During the surgery, the surgeon performed a B-mode ultrasonic scan to locate the tumor.
   在手术中，外科医生执行了一次B型超声扫描以定位肿瘤。
3. 3. The B-mode ultrasonic scan revealed that there was no significant fluid accumulation in the patient's lungs.
   B型超声扫描显示患者肺部没有显著的积液。