Yang A, Mostwin J L, Rosenshein N B, Zerhouni E A
Russell H. Morgan Department of Radiology, Johns Hopkins School of Medicine, Baltimore, MD.
Radiology. 1991 Apr;179(1):25-33. doi: 10.1148/radiology.179.1.2006286.
The authors present a new method for assessing pelvic prolapse with dynamic fast magnetic resonance (MR) imaging. Twenty-six women with signs and symptoms suggesting pelvic prolapse and 16 control subjects were studied with a series of fast (6-12-second) MR images. Sagittal and coronal images were obtained with graded increase in voluntary pelvic strain, allowing for dynamic display and quantification of the pelvic prolapse process. The distance from the pubococcygeal line was used as an internal reference for measurement of descent in the maximal strain position. With use of control results for normal limit values, prolapse involving the anterior pelvic compartment (cystocele), the middle compartment (vaginal prolapse, uterine prolapse, and enterocele), and the posterior compartment (rectocele) was easily demonstrated. Significant differences between control subjects and patients with prolapse were seen at maximal strain but not in the relaxed state. Quantification of the pelvic descent process with use of fast MR imaging may be of value in surgical planning and postsurgical follow-up.
作者们提出了一种利用动态快速磁共振（MR）成像评估盆腔脏器脱垂的新方法。对26名有盆腔脏器脱垂体征和症状的女性以及16名对照受试者进行了一系列快速（6 - 12秒）MR图像研究。通过逐渐增加自主盆底用力程度获取矢状面和冠状面图像，从而能够动态显示和量化盆腔脏器脱垂过程。耻骨尾骨线的距离被用作在最大用力位置测量下移程度的内部参考。利用对照结果确定正常极限值，涉及前盆腔脏器（膀胱膨出）、中盆腔脏器（阴道脱垂、子宫脱垂和小肠膨出）以及后盆腔脏器（直肠膨出）的脱垂很容易被显示出来。在最大用力时可看到对照受试者与脱垂患者之间存在显著差异，但在松弛状态下则无差异。利用快速MR成像对盆腔下移过程进行量化在手术规划和术后随访中可能具有价值。
