摘要
目的探讨直肠灌注后PET与CT增强融合显像在直肠癌诊断中的价值。方法选择临床高度怀疑直肠癌的病例46例,先用生理盐水进行直肠灌注后,行盆腔CT增强扫描和PET显像,然后将两者图像融合,对直肠病变进行诊断,并将所得结果与肠镜活检病理或术后病理结果对照,以判断PET与CT增强融合显像对直肠癌诊断的准确率,以及在评估直肠肿块局部浸润情况方面与术后病理的符合率。结果46例患者中PET/CT增强融合显像阳性为43例,阴性为3例。其中显示病变侵犯肌层,但未突破浆膜层25例;突破浆膜层10例;周围组织侵犯8例;病理确诊直肠癌42例。PET/CT增强融合显像假阴性1例,假阳性2例,PET/CT增强融合显像对直肠癌诊断的准确性为93.48%,局部侵犯的符合率为98%。结论直肠灌注后PET与CT增强融合显像在直肠癌的诊断及判断肿瘤局部侵犯情况中具有重要的临床价值。
Objective To investigate the diagnostic value of integrated PET/CT imaging in rectal cancer after rectum perfusion.Methods 46 cases of highly suspected rectal cancer were studied.After saling perfusion in the rectum. enhanced CT scan and PET scan in the pelvic area were performed. The diagnoess were based on the fused images of CT and PET. The results were compared with pathological results after biopsy or surgery. Results In all 46 cases, 43cases showed positive result in integrated PET/CT imaging;3 cases were negative.25 cases showed myometrial invasion without serosal layer invasion; 10 cases showed serosal layer invasion;8cases showed invasion in the surrounding tissue; 42 cases were confirmed rectal cancer by pathology. The integrated PET/CT study showed 1 case of false negative, 2Cases of false positive. The accuracy was 93.48% for general diagnosis and 98% for local infiltration.Conclusion Rectal perfusion has important value in the diagnosis of rectal cancer and determine local infiltration in integrated PET/CT imaging.
出处
《中国医疗设备》
2009年第10期125-127,共3页
China Medical Devices
