van Loon A J, Mantingh A, Thijn C J, Mooyaart E L
Department of Obstetrics and Gynecology, University Hospital, Groningen, The Netherlands.
Am J Obstet Gynecol. 1990 Oct;163(4 Pt 1):1256-60. doi: 10.1016/0002-9378(90)90702-9.
Evaluation of the pelvis by pelvimetry plays an important role in selecting patients with term breech presentation for possible vaginal delivery. X-ray pelvimetry involves the disadvantage of fetal exposure to ionizing radiation. Computed tomography reduces the amount of radiation markedly, but there is still a risk. Ten patients with breech presentation at term underwent antepartum pelvimetry with magnetic resonance imaging, following by postpartum magnetic resonance pelvimetry and x-ray pelvimetry. Measurements with magnetic resonance imaging are as reliable as those obtained with x-ray pelvimetry and the contrast of the magnetic resonance images is even better. The advantages of magnetic resonance pelvimetry are clear: no ionizing radiation and reliable pelvimetry results in cases of term breech presentation in which a normal pelvis is a prerequisite for safe vaginal delivery.
通过骨盆测量法评估骨盆在选择足月臀位分娩的患者以进行可能的阴道分娩中起着重要作用。X线骨盆测量法存在胎儿暴露于电离辐射的缺点。计算机断层扫描显著减少了辐射量，但仍有风险。10例足月臀位患者在产前接受了磁共振成像骨盆测量，随后进行了产后磁共振骨盆测量和X线骨盆测量。磁共振成像测量与X线骨盆测量获得的结果一样可靠，并且磁共振图像的对比度甚至更好。磁共振骨盆测量的优点显而易见：无电离辐射，并且在足月臀位分娩（其中正常骨盆是安全阴道分娩的先决条件）的情况下，骨盆测量结果可靠。
