经团注试验获得的心输出量作为后续冠状动脉CT血管造影对比剂注射速率修正的一个因素。
Cardiac output obtained from test bolus injections as a factor in contrast injection rate revision of following coronary CT angiography.
作者信息
Konno Masahiko, Hosokai Yoshiyuki, Usui Akihito, Abe Mitsuya, Tateishi Toshiki, Kawasumi Yusuke, Tsuda Masashi, Ota Hideki, Takase Kei, Saito Haruo
机构信息
Division of Diagnostic Image Analysis, Graduate School of Medicine, Tohoku University, Miyagi, Japan.
出版信息
Acta Radiol. 2012 Dec 1;53(10):1107-11. doi: 10.1258/ar.2012.120276. Epub 2012 Sep 19.
BACKGROUND
Optimal contrast enhancement is crucial for the detection of coronary artery stenoses and atherosclerotic changes in coronary CT angiography (CTA).
PURPOSE
To demonstrate the feasibility of using the cardiac output (CO) obtained from the test bolus injection data-set (COtest) as a factor in contrast injection rate revision of the following coronary CTA.
MATERIAL AND METHODS
The test bolus injection data-sets of 52 consecutive coronary CTAs were examined. COtest was calculated from the test bolus data-set. Aortic peak enhancement (APE) was measured on the following coronary CTA. We simulated the APE at a fixed contrast injection rate of 4 mL/s (simAPE) in each patient.
RESULTS
The ranges of COtest and simAPE were 2.82-7.56 L/min and 194-527 Hounsfield Units, respectively. There was a significant negative correlation (R = -0.802, P < 0.001) between simAPE and COtest.
CONCLUSION
COtest can be used for injection rate revision on coronary CTA.
背景
在冠状动脉CT血管造影（CTA）中，最佳的对比剂增强对于检测冠状动脉狭窄和动脉粥样硬化改变至关重要。
目的
证明将从测试团注注射数据集获得的心输出量（CO）（COtest）用作后续冠状动脉CTA对比剂注射速率修正因素的可行性。
材料与方法
检查了连续52例冠状动脉CTA的测试团注注射数据集。从测试团注数据集中计算出COtest。在后续的冠状动脉CTA上测量主动脉峰值增强（APE）。我们在每位患者中以4 mL/s的固定对比剂注射速率模拟APE（simAPE）。
结果
COtest和simAPE的范围分别为2.82 - 7.56 L/min和194 - 527亨氏单位。simAPE与COtest之间存在显著的负相关（R = -0.802，P < 0.001）。
结论
COtest可用于冠状动脉CTA的注射速率修正。
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