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作者应用频率为2.5兆赫、重复频率每秒为200—1,000次的超声波诊断仪,对腹部疾病进行了广泛的探查研究;在工作中采用B型聚焦复式扫描方法,探头直径为2吋,晶体前面的透镜主焦距为17.5厘米,焦带为15—30厘米;用通常水平扫描与圆周扫描二者相结合的方法进行探查。探查时,将所检查的部位浸在水温为27℃及比重为1.017的盐水内。用自动装置,使探头在水中作间接移动的探查。应用上述B型聚焦复式的扫描方法,可获得更为清晰和真实的组织显象图。
The authors used an ultrasound scanner with a frequency of 2.5 MHz and a repetition rate of 200-1,000 times per second for extensive exploration of abdominal disease. A B-scan focused duplex scan was used at the probe with a probe diameter of 2 inches. The front of the crystal The main focal length of the lens is 17.5 cm and the focal length is 15-30 cm; probing is performed by a combination of normal horizontal scanning and circular scanning. During probing, the site to be examined is immersed in saline having a water temperature of 27 ° C and a specific gravity of 1.017. With automatic devices, the probe in the water for indirect movement exploration. Using the above-mentioned B-type multi-focal scanning method, a clearer and more realistic histogram can be obtained.