低剂量MSCT多期扫描及三维重建在胃癌诊断中的应用

Application of low-dose multi-slice spiral CT multi-stage scan and three-dimensional reconstruction in diagnosis of patients with gastric carcinoma

目的探讨低剂量多层螺旋CT(MSCT)多期扫描及三维重建对胃癌的诊断价值。方法收集经病理证实的胃癌患者40例,术前行低剂量MSCT平扫、动态增强扫描及三维重建扫描,再运用多平面重建、容积重建及CT仿真内窥镜等后处理技术,观察胃癌原发部位、外周浸润及远处转移情况。结果所有患者低剂量MSCT图像质量均显示满意,均发现胃部原发病灶并获得胃周浸润、淋巴结转移、远处转移较满意的诊断率。结论低剂量MSCT多期扫描及三维重建在降低辐射剂量的同时可以揭示胃癌原发部位、外周浸润及远处转移情况。

Objective To explore the value of low-dose multi-slice spiral computed tomography（MSCT） multi-stage scan and three-dimensional reconstruction in diagnosis of patients with gastric carcinoma.Methods A total of 40 patients with gastric carcinoma were selected.All the patients were conducted with low-dose MSCT scan,dynamic contrast scanning and three-dimensional reconstruction scan,and then were processed by multi-planar reconstruction,volume reconstruction and CT virtual endoscopy.Primary lesions in gastric cancer,peripheral infiltration and distant metastasis were observed.Results All the patients were satisfied with the low dose MSCT images,and all of them found primary gastric lesions and had satisfactory diagnosis rates of gastric peripheral infiltration,lymph node metastasis and distant metastasis.Conclusion Low-dose MSCT multi-stage scan and three-dimensional reconstruction can reduce the radiation dose and reveal the primary gastric lesions,gastric peripheral infiltration and distant metastasis.