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当前B型超声检查在计划生育领域中已成为一个不可缺少的检查手段。不仅可用于IUD的监护,也可协助诊断早早孕、异常妊娠和胎儿畸形,有利于优生工作的开展。最常用的是B型实时显像仪,其频率为3～5兆赫(MHz)。通常为3.5兆赫(1MHz=3,500,000周/秒。大量的实验及临床研究证明此一超声强度对人体包括胚胎和胎儿无不良影响。检查方法简单易行,唯一缺点是目前仪器费用较为昂贵,尚难普遍推广。一、B型实时检查应注意事项 (一)进行常规检查时,病人多取仰卧位。必要时可改变体位取侧卧位或站立姿势。 (二)膀胱需要充盈:液体是良好的传声介质。藉助充盈的膀胱可将前位的膀胱压为水平位,后位子宫上方的肠管排开,便于检查。当充盈的膀胱能遮盖宫底时即谓之充
The current B-mode ultrasound in the field of family planning has become an indispensable means of inspection. Not only for IUD custody, but also can help diagnose early pregnancy, abnormal pregnancy and fetal malformations, is conducive to the development of eugenics. The most common is the B-type real-time camera, the frequency of 3 to 5 megahertz (MHz). Usually 3.5 megahertz (1MHz = 3,500,000 weeks / sec.) A large number of experimental and clinical studies have shown that this ultrasound intensity on the human body, including embryos and fetuses without adverse effects .Check method is simple, the only drawback is that the current instrument costs more expensive General promotion. A, B-type real-time inspection should pay attention to matters (A) of the routine examination, the patient to take supine position, if necessary, to change the position to take the lateral position or standing position (B) the bladder needs filling: the liquid is good Sound media. With the filling of the bladder bladder pressure can be used for the level of the former position, the posterior uterine bowel row arranged to facilitate inspection. When the filling of the bladder can cover the end of the palace when the charge