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Influence of heart rate and coronary artery calcification on image quality and diagnostic performance of coronary CT angiography: comparison between 96-row detector dual source CT and 256-row multidetector CT
Journal of X-Ray Science and Technology ( IF 1.7 ) Pub Date : 2021-03-15 , DOI: 10.3233/xst-210837
Wen Qian 1 , Wangyan Liu 1 , Yinsu Zhu 1 , Jun Wang 1 , Yang Chen 1 , Haoyu Meng 2 , Leilei Chen 2 , Yi Xu 1 , Xiaomei Zhu 1
Affiliation  

BACKGROUND:CT-derived fractional flow reserve (FFRCT) and diagnostic accuracy rely on good image quality during coronary CT angiography (CCTA). OBJECTIVE:To investigate whether heart rate (HR) and coronary artery calcium (CAC) score decrease image quality and diagnostic performance of two advancedCT scanners including 96-row detector dual source CT (DSCT) and 256-row multidetector CT (MDCT). METHODS:First, 79 patients who underwent CCTA (42 with DSCT and 37 with MDCT) and invasive coronary angiography (ICA) are enrolled. Next, coronary segments with excellent image quality are evaluated and the percentage is calculated. Then, diagnostic accuracy in detecting significant diameter stenosis is presented with ICA as the reference standard. RESULTS:Compared with the DSCT, the percentage of coronary segments with excellent image quality is lower (P = 0.010) while diagnostic accuracy on per-segment level is improved (P = 0.037) using MDCT. CAC score≥400 is the only independent factor influencing the percentage of coronary segments with excellent image quality [odds ratio (OR): DSCT, 3.096 and MDCT, 1.982] and segmental diagnostic accuracy (OR: DSCT, 2.630 and MDCT, 2.336) for both scanners. HR≥70 bpm (OR: 5.506) is the independent factor influencing the percentage of coronary segments with excellent image quality with MDCT. CONCLULSION:During CCTA, CAC score≥400 still decreases the proportion of coronary segments with excellent image quality and diagnostic accuracy with advanced CT scanners. HR≥70 bpm is another factor causing image quality decreasing with MDCT.

中文翻译:

心率和冠状动脉钙化对冠状动脉CT血管造影图像质量和诊断性能的影响:96排探测器双源CT与256排多排探测器CT对比

背景:CT 衍生的血流储备分数 (FFRCT) 和诊断准确性依赖于冠状动脉 CT 血管造影 (CCTA) 期间良好的图像质量。目的:探讨心率 (HR) 和冠状动脉钙化 (CAC) 评分是否会降低两种先进 CT 扫描仪的图像质量和诊断性能,包括 96 排探测器双源 CT (DSCT) 和 256 排多探测器 CT (MDCT)。方法:首先,79例接受CCTA(42例DSCT和37例MDCT)和侵入性冠状动脉造影(ICA)的患者入组。接下来,评估具有出色图像质量的冠状动脉节段并计算百分比。然后,以 ICA 为参考标准呈现检测显着直径狭窄的诊断准确性。结果:与DSCT相比,具有优良图像质量的冠状动脉节段比例较低(P=0. 010),而使用 MDCT 提高了每段水平的诊断准确性(P = 0.037)。CAC 评分≥400 是影响具有优良图像质量的冠状动脉节段百分比的唯一独立因素 [优势比 (OR):DSCT,3.096 和 MDCT,1.982] 和节段诊断准确性(OR:DSCT,2.630 和 MDCT,2.336)两个扫描仪。HR≥70 bpm (OR: 5.506) 是影响 MDCT 图像质量优良的冠状动脉节段百分比的独立因素。结论:在CCTA期间,CAC评分≥400仍会降低具有先进CT扫描仪图像质量和诊断准确性的冠状动脉节段的比例。HR≥70 bpm 是导致 MDCT 图像质量下降的另一个因素。CAC 评分≥400 是影响具有优良图像质量的冠状动脉节段百分比的唯一独立因素 [优势比 (OR):DSCT,3.096 和 MDCT,1.982] 和节段诊断准确性(OR:DSCT,2.630 和 MDCT,2.336)两个扫描仪。HR≥70 bpm (OR: 5.506) 是影响 MDCT 图像质量优良的冠状动脉节段百分比的独立因素。结论:在CCTA期间,CAC评分≥400仍会降低具有先进CT扫描仪图像质量和诊断准确性的冠状动脉节段的比例。HR≥70 bpm 是导致 MDCT 图像质量下降的另一个因素。CAC 评分≥400 是影响具有优良图像质量的冠状动脉节段百分比的唯一独立因素 [优势比 (OR):DSCT,3.096 和 MDCT,1.982] 和节段诊断准确性(OR:DSCT,2.630 和 MDCT,2.336)两个扫描仪。HR≥70 bpm (OR: 5.506) 是影响 MDCT 图像质量优良的冠状动脉节段百分比的独立因素。结论:在CCTA期间,CAC评分≥400仍会降低具有先进CT扫描仪图像质量和诊断准确性的冠状动脉节段的比例。HR≥70 bpm 是导致 MDCT 图像质量下降的另一个因素。506) 是影响 MDCT 图像质量优良的冠状动脉节段百分比的独立因素。结论:在CCTA期间,CAC评分≥400仍会降低具有先进CT扫描仪图像质量和诊断准确性的冠状动脉节段的比例。HR≥70 bpm 是导致 MDCT 图像质量下降的另一个因素。506) 是影响 MDCT 图像质量优良的冠状动脉节段百分比的独立因素。结论:在CCTA期间,CAC评分≥400仍会降低具有先进CT扫描仪图像质量和诊断准确性的冠状动脉节段的比例。HR≥70 bpm 是导致 MDCT 图像质量下降的另一个因素。
更新日期:2021-03-16
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