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[1]梁永刚,付丽媛,陈自谦.综合评价法对256层CT前瞻性与回顾性心电门控冠状动脉成像质量的对比研究[J].医学研究与战创伤救治(原医学研究生学报),2015,17(06):563-567597.[doi:10.3969/j.issn.1672-271X.2015.06.002]
　LIANG Yong-gang,FU Li-yuan,CHEN Zi-qian..Using comprehensive evaluation method to assess image quality of 256-slice CT coronary angiography in prospectively ECG-gating and retrospectively ECG-gating[J].JOURNAL OF MEDICALRESEARCH —COMBAT TRAUMA CARE,2015,17(06):563-567597.[doi:10.3969/j.issn.1672-271X.2015.06.002]
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综合评价法对256层CT前瞻性与回顾性心电门控冠状动脉成像质量的对比研究()
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《医学研究与战创伤救治》（原医学研究生学报）[ISSN:1672-271X/CN:32-1713/R]

卷:
第17卷
期数:
2015年06期
页码:
563-567597
栏目:
出版日期:
2015-12-15

文章信息/Info

Title:
Using comprehensive evaluation method to assess image quality of 256-slice CT coronary angiography in prospectively ECG-gating and retrospectively ECG-gating
作者:
梁永刚; 付丽媛; 陈自谦
350025 福建福州，南京军区福州总医院医学影像中心
Author(s):
LIANG Yong-gang;  FU Li-yuan;  CHEN Zi-qian.
Medical Image Center of Fuzhou General Hospital, Nanjing Military Command, PLA, Fuzhou, Fujian 350025, China
关键词:
综合评价法; 256层螺旋CT; 冠状动脉成像; 前瞻性心电门控轴扫技术; 回顾性心电门控螺旋扫描技术; 图像质量; 辐射剂量
Keywords:
comprehensive evaluation method;  256-slice spiral computed tomography;  coronary angiography;  prospective ECG-gating technique;  retrospective ECG-gating technique;  image quality;  radiation dose
分类号:
R445.3；R541.4
DOI:
10.3969/j.issn.1672-271X.2015.06.002
文献标志码:
A
摘要:
目的 采用主观评价与客观评价相结合的综合评价法对256层螺旋极速CT前瞻性与回顾性心电门控冠状动脉CTA检查的图像质量进行对比研究。方法 按拟定的排除标准共120例患者纳入研究，分为常规回顾性心电门控螺旋扫描组和前瞻性心电门控轴扫描组，每组60例。所有患者随机分组。记录每例患者的性别、年龄、体重、身高、体质量指数、平均心率及扫描长度，计算出有效辐射剂量，对图像质量进行主观评价，同时测量并计算出原始轴位冠状动脉增强图像的客观评价指标：图像噪声、信号噪声比和对比噪声比，对有效辐射剂量、主观与客观图像质量评估指标进行统计学分析。结果 ①两组患者的有效辐射剂量分别为(14.34±0.92) mSv、(3.56±0.36) mSv，两组之间差异有统计学意义（P＜0.05）。②两组患者的图像质量主观评分分别为(3.63±0.41)分、(3.62±0.45)分。两组患者的图像噪声分别为(30.48±5.60)、(30.95±4.57)。两组患者的图像信噪比分别为(15.42±3.73)、(15.09±3.08)。两组患者的图像对比噪声比分别为(13.29±3.52)、(13.05±2.95)。除有效辐射剂量两组之间差异有统计学意义（P＜0.05）外，其他图象质量指标两组之间差异均无统计学意义（P＞0.05）。结论 采用综合评价法对256层螺旋极速CT前瞻性与回顾性心电门控技术冠状动脉CTA检查的图像质量进行对比，前瞻性心电门控技术在降低患者受检剂量的同时，可以得到与回顾性心电门控技术相当的图像质量。
Abstract:
Objective To investigate the prospectively ECG-gated CT coronary angiography versus retrospectively ECG-gated 256-slice CT coronary angiography in image quality using comprehensive evaluation method. Methods According to the exclusion criteria, 120 cases were included in the study and divided into two groups randomly. Group A: conventional retrospective ECG-gating group (control group); group B: prospective ECG-gating group (experiment group). Record the gender, age, weight, height, BMI, average heart rate and scanning length of each patient, and calculated effective dose (ED). Assess the image quality of coronary artery subjectively, and measure background noise (BN)，signal noise ratio (SNR) and contrast noise ratio (CNR) in axial original coronary artery enhancement image. The ED, objective and subjective image quality assessment index of the patients in the two groups were analyzed statistically. Results ① The ED of patients in A and B groups were (14.34±0.92)mSv and (3.56±0.36)mSv respectively, which had significant difference between the two groups (P<0.05). ② The total score of image in A and B groups were (3.63±0.41) and (3.62±0.45) respectively, which had no significant difference between the two groups (P>0.05). The BN of image in A and B groups were (30.48±5.60) and (30.95±4.57) respectively, which had no significant difference between the two groups (P>0.05). The SNR of image in A and B groups were (15.42±3.73) and (15.09±3.08) respectively, which had no significant differences between the two groups (P>0.05). The CNR of image in A and B groups were (13.29±3.52) and (13.05±2.95) respectively, which had no significant difference between the two groups (P>0.05). Conclusion By using comprehensive evaluation method to assess image quality of 256-slice CT coronary angiography in prospectively ECG-gating and retrospectively ECG-gating, we find that the prospective ECG-gating CT coronary angiography can hold image quality，at the same time reduce radiation dose effectively.

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相似文献/References:

[1]雷 勇,陈自谦,付丽媛,等.基于身体质量指数优化管电流降低256层螺旋CT的冠状动脉成像辐射剂量的研究[J].医学研究与战创伤救治(原医学研究生学报),2014,16(01):1.
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备注/Memo

备注/Memo:
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更新日期/Last Update: 2015-11-20