64排螺旋CT扫描对大肠癌诊断及分期的价值

目的探讨64排螺旋CT(64-MSCT)扫描对大肠癌诊断及分期的价值。方法选择经纤维大肠镜检查诊断或怀疑大肠癌的83例患者进行64-MSCT容积扫描和增强扫描。利用工作站后处理软件获得多平面重建、三维表面遮盖显示、CT仿真内窥镜等后处理图像对病变进行分析,将诊断和分期结果与手术病理结果进行对比。结果 64-MSCT对所有患者的诊断符合率为100%,平扫和增强扫描能清晰显示肠腔及肠壁的病变、病灶与周围组织的位置关系,并可显示周围组织器官有无受侵犯及远处转移情况。影像分期与病理TMN分期的对比结果显示影像分期的准确性分别是:T0期100%,T1期89.4%,T2期85%,T3期88.9%,T4期100%;N0期100%,N1期57.9%,N2期53.4%,N3期78.3%;M0期100%期,M1期98.2%。结论 64-MSCT能对大肠癌进行准确的诊断及分期,正确指导临床治疗措施的制定。

Applied Value of 64-Multislice Spiral CT in Colorectal Cancer Diagnosis and Staging

Objective To determine the value of 64-MSCT with low-dose technique in diagnosing and staging colorectal cancer. Methods 83 patients diagnosed by endoscope or suspicious of having colorectal cancer in clinical diagnosis underwent low-dose 64- MSCT volume plainscans and enhancement scanning. The CT data was transmitted to the workstation and multiplanar reformation,Shaded-surface display, CT virtual gastroscopy were obtained by using different softwares.Results The corresponding rate of diagnosis for all the patients was 100% by low-dose 64-MSCT. Low-dose volume plainscan and enhancement scan showed the changes of lumen and wall, and the relationship between the lesions and adjacent tissues. It could also detect the invasion of adjacent tissues and distant metastasis. The accuracy rate of imageology staging contrasted to pathology TMN staging were T0 stage 100%, T1 stage 89.4%, T2 stage 85%, T3 stage 88.9%, T4 stage 100%; N0 stage 100%, N1 stage 57.9%, N2 stage 53.4%, N3 stage 78.3%; M0 stage 100%, M1 stage 98.2%. Conclusion 64-MSCT can provid accurate preoperative staging and diagnosis for colorectal cancer, which guide the clinical treatment correctly.