Adam P, Alberge Y, Sablayrolles J L, Grandjean B
J Radiol. 1986 Jan;67(1):47-52.
We studied the ability of digital radiographs generated on a computed tomography scanner to replace conventional pelvimetry. Two digital radiograph's and one CT section permit us to measure the maternal pelvis. The anteroposterior digital radiograph allows measurement of the maximum transverse and median transverse diameters of the pelvic inlet. These two distances are corrected for magnification after reference to the lateral digital radiograph and to a graph determined owing to a phantom. The anteroposterior digital radiograph also permits to perform a CT section passing through the ischial spines with direct measurement of the inter spinous diameter. The lateral digital radiograph gives us the true values for the anteroposterior diameter of the pelvic inlet, the low sagittal diameter, the cord and the rise of the sacrum. The dosimetry studies demonstrated that maternal skin doses and fetal gonad doses were very low. Pelvimetry using digital radiography is a simple and rapid to perform procedure which offers the advantage of low radiation exposure to both fetus and mother and a high accuracy of measurement.
我们研究了计算机断层扫描扫描仪生成的数字X线片替代传统骨盆测量的能力。两张数字X线片和一个CT断层使我们能够测量产妇骨盆。前后位数字X线片可测量骨盆入口的最大横径和中横径。在参考侧位数字X线片和因模体确定的图表后，对这两个距离进行放大校正。前后位数字X线片还允许进行穿过坐骨棘的CT断层扫描，并直接测量棘间径。侧位数字X线片为我们提供了骨盆入口前后径、低矢状径、尾骨和骶骨上升的真实值。剂量学研究表明，产妇皮肤剂量和胎儿性腺剂量非常低。使用数字X线摄影进行骨盆测量是一种简单且快速的操作程序，具有对胎儿和母亲辐射暴露低以及测量精度高的优点。
