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作者在超声控制下为体外受精穿刺卵泡取卵已经2年。用超声引导比用腹腔镜引导获得稍高的妊娠率。采用经膀胱的方法,在卵巢位于深入子宫后的Douglas窝或肥胖病人,偶尔难以穿过膀胱到达卵巢或卵泡。我们过去采用的、近来由Dellenbach等介绍的在膀胱扫描控制下的经阴道穿刺术,似略有危险,以其不可能作出精确的卵泡定位和穿刺。这组卵子回收率较低。经阴道扇形扫描的发展具有与经膀胱的方法同样的优点:经阴道扇形扫描是一种在超声检查控制下精确的针指引穿刺术。材料和方法:新近发展的阴道扫描器由Kretztechnik制造并被采用到320仪器,扫描器具有5MHz频率及10cm最大穿透深度,视野240°和成象频率为8显象/秒。当以大约15°相对钝角朝向扫描仪轴时,可获得两根针引导,从而能从两个方向穿刺位于扇形扫描仪视野上方的结构。显示针的预定方向的样规在扫描仪里,并经电线显象。用阴道扫
The authors have been using oestrus tubes for oocyte retrieval in vitro for 2 years. Using ultrasound guidance than using laparoscopic guidance to obtain a slightly higher pregnancy rate. With the transurethral approach, it is sometimes difficult for the Douglas fossa or obese patient to have ovarian access to the ovary or follicle after the ovary is located deep into the uterus. The transvaginal puncture procedure we used in the past, introduced recently by Dellenbach et al under bladder scan control, seemed a bit dangerous as it was impossible to make accurate follicular positioning and puncture. This group of eggs recovery rate is low. The development of a transvaginal sector scan has the same advantages as the transurethral approach: the transvaginal sector scan is a precise needle-guided puncture under the control of an ultrasound. Materials and Methods: A newly developed vaginal scanner manufactured by Kretztechnik was used with 320 instruments with a 5 MHz frequency and a maximum penetration depth of 10 cm, a field of view of 240 ° and an imaging frequency of 8 images / sec. Two needle guides are obtained when facing the scanner axis at a relatively obtuse angle of about 15 ° so that the structure located above the sector view of the sector scanner can be punctured in both directions. The sample showing the needle’s intended orientation is in the scanner and visualized by a wire. Vaginal scan