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目的 分析宫颈癌放疗中与放疗后盆部软组织、器官的异常 MR表现。探讨 MR成像对显示盆部软组织损伤的临床价值。方法 38例经病理证实的宫颈癌患者在放射治疗前及治疗中和治疗后不同时间段行盆腔 MR扫描。在 MR图像上观察盆部软组织、器官在放疗前后的大小及信号改变。结果 放疗可引起多个组织、器官的异常 MR表现。异常MR表现发生率在40%以上的有直肠、直肠筋膜、宫旁组织、盆壁肌肉与皮下脂肪。直肠、膀胱、子宫的异常 MR表现在放疗后6个月可消失。结论 MR成像可对盆部软组织的射线损伤进行实时监测,对宫颈癌放射治疗有指导意义。
Objective To analyze the abnormal MR findings of pelvic soft tissues and organs during and after radiotherapy of cervical cancer. To investigate the clinical value of MR imaging in detecting soft tissue injury in the pelvis. Methods 38 cases of pathologically confirmed cervical cancer patients before and after radiotherapy and treatment of pelvic MR scan at different time intervals. The pelvic soft tissues were observed on the MR images, and the size and signal changes of organs before and after radiotherapy were observed. Results Radiotherapy can cause abnormal MR findings in multiple tissues and organs. Abnormal MR showed the incidence of more than 40% of the rectum, rectal fascia, uterine tissue, pelvic muscle and subcutaneous fat. Rectal, bladder, uterine abnormal MR performance in 6 months after radiotherapy can disappear. Conclusion MR imaging can detect the damage of pelvic soft tissue in real time and has guiding significance for radiotherapy of cervical cancer.