| 唐云波,郑林丰,欧阳欣,许静波,王治愚.256排Revolution多参数调节下低剂量心脏冠脉成像应用[J].,2018,(10):1922-1926 |
| 256排Revolution多参数调节下低剂量心脏冠脉成像应用 |
| Application of 256-row Revolution CT with Multi-parameter Regulation for Low-dose Coronary Computed Tomographic Angiography |
| 投稿时间：2017-12-27 修订日期：2018-01-22 |
| DOI：10.13241/j.cnki.pmb.2018.10.023 |
| 中文关键词: 心脏冠脉成像 多参数调节 自动毫安 自动千伏 图像迭代重建 |
| 英文关键词: Coronary computed tomographic angiography Multi-parameter Regulation Automatic milliampere Automatic kV Im- age iterative reconstruction |
| 基金项目:上海市浦江人才计划项目(17PJ1408000) ；上海市自然科学基金资助项目(17ZR1422500)；上海交通大学医工（理）交叉基金资助项目(YG2016MS26) |
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| 中文摘要: |
| 摘要 目的：研究256排Revolution多参数调节下低剂量扫描心脏冠脉成像（Coronary computed tomographic angiography，CCTA）的应用。方法：回顾性分析2016年3月15日至5月15 日间在我院256排CT行CCTA的患者，分为心率稳定试验组(n=54例)和心率不稳定试验组(n=41例)，同时选取在我院64排VCT行CCTA的患者为对照组（n=116例），对三组CCTA图像质量行主观和客观评估，比较有效辐射剂量的差异。结果：256排CT检查成功率和图像质量的主观评价均优于对照组（P<0.05）；信噪比(SNR)、对比噪声比(CNR)与对照组差异无统计学意义（P>0.05）；但有效辐射剂量明显降低（P<0.05）。结论：256排CT多参数调节下检查冠脉在保证图像质量下可有效降低辐射剂量。 |
| 英文摘要: |
| ABSTRACT Objective: To study the feasibility of 256-row revolution computed tomography (CT) with optimal multi-parameter se- lection for low-dose coronary computed tomographic angiography (CCTA). Methods: This retrospective study enrolled 95 cases under- going CCTA with 256-row CT in our hospital from March 15,2016 to May 15, 2016 and these patients was divided into two groups: sta- ble heart rate group (n=54) and unstable heart rate group (n=41). Additionally, we selected 116 cases whom underwent CCTA examina- tion with 64-slice VCT as control group (n=116). Then, we evaluated the image quality of subjective and objective score and compared effective radiation dose in these three groups. Results: For CCTA with 256-row CT, both the success rate and subjective evaluation of im- age quality were superior to conventional 64-slice VCT (control group, P<0.05). The signal-to-noise ratio (SNR) and contrast-to-noise ra- tio (CNR) were not statistically significant between the three group (P>0.05). However, the radiation dose was significantly reduced than the control group (P<0.05). Conclusion: With optimal multi-parameter regulation, 256-row revolution CT can effectively reduce the radi- ation dose while preserve diagnostic image quality for CCTA. |
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