| 李元胄,周 洋,尚乃舰,刘 洋,张修石.不同剂量64排CT增强扫描结合三维重建在胃癌应用中的图像质量研究[J].,2017,17(15):2944-2948 |
| 不同剂量64排CT增强扫描结合三维重建在胃癌应用中的图像质量研究 |
| Different Doses of 64 Row CT Enhanced Scan Combined with Image Quality of the Application of 3 D Reconstruction in Gastric Carcinoma |
| 投稿时间：2016-10-23 修订日期：2016-11-20 |
| DOI：10.13241/j.cnki.pmb.2017.15.038 |
| 中文关键词: 胃癌 多层螺旋CT 三维重建 不同剂量 图像质量对比 |
| 英文关键词: Gastric carcinoma Multi-slice computed tomography Dimensional reconstruction Different doses Image quality com- parison |
| 基金项目:黑龙江省教育厅科学研究项目（2012-153） |
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| 中文摘要: |
| 摘要 目的：研究不同剂量64排CT增强扫描结合三维重建在胃癌应用中的图像质量。方法：90例胃癌行胃部64层螺旋CT三期增强扫描患者后根据管电压设置分成A、B、C三组：A组120KV、B组100KV、C组80KV。通过轴位图像结合三维重建（VR、MPR和MIP等）分析不同剂量下螺旋CT扫描结合三维重建图像诊断质量。结果：A、B两组的图像清晰度的差异无统计学意义(P＞0.05)，A、B组剂量加权指数降低率的差异具有统计学意义，A、C两组间图像清晰度及剂量加权指数降低率的差异具有统计学意义(P＜0.05)，B、C组两项差异具有统计学意义。结论：适当调整MSCT的剂量，可以获得与常规MSCT剂量完全相同的图像而且可以降低辐射。 |
| 英文摘要: |
| ABSTRACT Objective: To study different doses of 64 row CT enhanced scan combined with image quality of 3 d reconstruction in gastric cancer. Methods: 90 cases of gastric cancer line 64 layer three periods of spiral CT enhanced scan in patients with stomach after according to the tube voltage setting is divided into three groups: A, B, C group A 120 kv, 100 kv group B, group C 80 kv. Through the shaft combined with 3 d reconstruction image (VR, MIP and MPR) analysis under the different dose spiral CT scan in combination with 3 d reconstruction image diagnosis quality. Results: Image resolution difference of A and B two groups has no statistical significance (P>0.05), A, B group of weighted index lower dose rate differences statistically significant, A, C image resolution between the two groups and dose weighted index decrease rate differences statistically significant (P<0.05), group B and C two difference is statistically significant. Conclusion: Adjust the dose of MSCT, can be obtained with conventional MSCT but also can reduce the radiation dose of the same images. |
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