| 张会如,姜鑫,张倩,张朝刚,李冲冲,王林省.双源CT双低技术在主动脉疾病CTA检查中的应用[J].济宁医学院学报,2019,42(6):416-419,423 |
| 双源CT双低技术在主动脉疾病CTA检查中的应用 |
| Application of dual-low CTA technique of dual-source CT on aortic diseases |
| 投稿时间：2019-05-20 |
| DOI：10.3969/j.issn.1000-9760.2019.06.009 |
| 中文关键词: 计算机体层摄影术;主动脉血管成像;辐射剂量;对比剂 |
| 英文关键词: Computed tomography;Aorta CTA;Radiation dose;Contrast medium |
| 基金项目: |
| 作者 | 单位 | | 张会如 | 济宁医学院第二临床医学院, 济宁 272067 | | 姜鑫 | 济宁医学院附属医院, 济宁 272029 | | 张倩 | 济宁医学院附属医院, 济宁 272029 | | 张朝刚 | 济宁医学院附属医院, 济宁 272029 | | 李冲冲 | 济宁医学院附属医院, 济宁 272029 | | 王林省 | 济宁医学院附属医院, 济宁 272029 |
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| 中文摘要: |
| 目的 探讨应用低对比例剂量、低辐射剂量技术在主动脉疾病患者CT血管成像中的应用情况。方法 选取64例主动脉疾病患者行胸腹主动脉CTA检查，将患者随机分为常规A组21例（BMI ≥ 25.0kg/m2时120KV，BMI<25.0kg/m2时100KV，碘普罗胺370mg I/ml，螺距1.2）、双低非门控B组21例（BMI ≥ 25.0kg/m2时100KV，BMI<25.0kg/m2时80KV，碘普罗胺300mg I/ml，螺距3.2）和双低门控C组22例（BMI ≥ 25.0kg/m2时100KV，BMI<25.0kg/m2时80KV，碘普罗胺300mg I/ml，螺距3.4）。比较各组间的主观图像质量评分和客观图像质量的差异，记录各组辐射剂量。结果 三组图像质量总体无明显差异，但是三组间主动脉根部主观图像质量评分具有统计学差异（P<0.05），经两两比较后示A组评分值明显小于B和C组，而后两者则相似。三组间辐射剂量比较差异具有统计学意义（P<0.05）。C组辐射剂量指标都明显低于A和B组，对比剂用量B组（55ml）和C组（55ml）较A组（70ml）有所减少。结论 低辐射剂量、低对比剂用量联合心电门控技术的主动脉血管成像，其图像质量能够满足临床诊断需要，并且可以显著地降低对比剂用量和辐射剂量。 |
| 英文摘要: |
| Objective To investigate the application of double-low dose in CT angiography (CTA) of patients with aortic lesions.Methods A total of 64 patients with aortic diseases undergoing CTA were selected as the subjects.The patients were randomly divided into routine group A,21 cases (120KV at BMI ≥ 25.0 and 100KV at BMI < 25.0,iopromide 370mg I/ml,pitch 1.2);double-low non-gated group B,21 cases (100KV at BMI ≥ 25.0 and 80KV at BMI<25.0,iopromide 300mg I/ml,pitch 3.2);and double-low-gated group C,22 cases (100KV at BMI ≥ 25.0 and 80KV at BMI < 25.0,iopromide 300mg I/ml,pitch 3.4).The differences of subjective image quality score and objective image quality between the two groups were compared.The radiation dose was recorded in each group.Results There was no significant difference in the overall image quality among the three groups.There was significant difference in the aortic root image quality score among the three groups (P<0.05).The mean value of group A was significantly lower than that of group B and C,while the latter two were similar.The radiation dose indices of group C were significantly lower than those of group A and B,and there was statistical significance between two groups (P<0.05).The iodine intake of group B (55ml) and group C (55ml) was 36.29% lower than that of group A (70ml).Conclusion The image quality of aortic angiography with low-voltage and low-dose contrast medium combined with ECG-gated technology can meet the needs of clinical diagnosis,and can significantly reduce the dosage of contrast medium and radiation dose. |
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