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进行超声波检查时,一般多用液体石蜡乳做为耦合剂。我们在对原乳剂的改进和新耦合剂的筛选过程中,发现PVA-124(聚乙烯醇)溶液做为超声探头耦合剂效果更好,现介绍如下。 1.处方:PVA-124 70g,甘油30g,香精适量,蒸馏水至1000ml。 2.制备:取PVA-124溶于适量蒸馏水中,待溶胀后,水浴(50～60℃)上搅拌溶解。然后加入甘油、香精,最后加蒸馏水足量,搅匀,赶出气泡,放入带塞的瓶子里保存。
Ultrasonic examination, the general use of more liquid paraffin emulsion as a coupling agent. We found in the improvement of the original emulsion and screening of the new coupling agent, PVA-124 (polyvinyl alcohol) solution as an ultrasonic probe coupling agent is better, are described below. 1. Prescription: PVA-124 70g, glycerol 30g, flavor amount, distilled water to 1000ml. 2. Preparation: Take PVA-124 dissolved in distilled water, to be swollen, water bath (50 ~ 60 ℃) on stirring to dissolve. Then add glycerin, flavor, and finally add a sufficient amount of distilled water, stir well, out of the bubble, into a bottle with a stopper save.