Blomlie V, Rofstad E K, Tverå K, Lien H H
Department of Diagnostic Radiology, Norwegian Radium Hospital, Oslo, Norway.
Radiology. 1996 May;199(2):461-8. doi: 10.1148/radiology.199.2.8668795.
To present the findings of the irradiated noncritical soft tissues of the female pelvis at magnetic resonance (MR) imaging within 18 months after radiation therapy (RT).
The soft tissues of the pelvis of 24 women with advanced cervical carcinoma were studied in 240 MR examinations scheduled before, three times during, and 7 weeks and 3, 6, 9, 12 and 18 months after RT. Two radiologists visually evaluated the signal intensity (SI) of the subcutaneous fat, muscles, and presacral space (PS) on T1- and T2-weighted and short inversion time inversion-recovery images.
SI compatible with edema appeared in the PS, pelvic muscles, and subcutaneous fat within 3 months after the end of RT and was observed in 23 (96%) of the 24 patients. During the observation period, the edema subsided. Eighteen months after treatment, edema in the PS was seen in 12 (50%) of the 24 patients.
The soft tissues of the female pelvis showed a characteristic pattern of varying edema after irradiation.
呈现女性骨盆非关键软组织在放射治疗（RT）后18个月内的磁共振（MR）成像表现。
对24例晚期宫颈癌女性患者的骨盆软组织进行了240次MR检查，检查时间安排在RT前、RT期间3次、RT后7周以及3、6、9、12和18个月。两名放射科医生在T1加权、T2加权和短反转时间反转恢复图像上对皮下脂肪、肌肉和骶前间隙（PS）的信号强度（SI）进行视觉评估。
RT结束后3个月内，PS、盆腔肌肉和皮下脂肪出现与水肿相符的SI，24例患者中有23例（96%）出现此情况。在观察期内，水肿消退。治疗18个月后，24例患者中有12例（50%）的PS出现水肿。
女性骨盆软组织在照射后呈现出不同程度水肿的特征性表现。
