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The International Journal of Cardiovascular Imaging

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01-09-2018 | Original Paper

Patient-related factors influencing detectability of coronary arteries in 320-row CT angiography in infants with complex congenital heart disease

Authors: Yuzo Yamasaki, Satoshi Kawanami, Takeshi Kamitani, Koji Sagiyama, Seitaro Shin, Takuya Hino, Hazumu Nagata, Hidetake Yabuuchi, Michinobu Nagao, Hiroshi Honda

Published in: The International Journal of Cardiovascular Imaging | Issue 9/2018

Abstract

To investigate the performance of second-generation 320-row computed tomographic (CT) angiography (CTA) in detecting coronary arteries and identify factors influencing visibility of the coronary arteries in infants with complex congenital heart disease (CHD). Data of 60 infants (aged 0–2 years, median 2 months) with complex CHD who underwent examination using 320-row CTA with low-dose prospective electrocardiogram-triggered volume target scanning were reviewed. The coronary arteries of each infant were assessed using a 0–4-point scoring system based on the number of coronary segments with a visible course. Clinical parameters, the CT value in the ascending aorta, image noise, and the radiation dose were subjected to univariate and multivariate analyses. The mean coronary score for all examinations was 2.6 ± 1.5 points. The mean attenuation in the ascending aorta was 306.7 ± 66.2 HU and the mean standard deviation was 21.7 ± 4.4. The mean effective radiation dose was 1.27 ± 0.39 mSv. Multivariate regression analysis showed significant correlations between coronary score and body weight (p < 0.05) and between coronary score and the CT value in the ascending aorta (p < 0.02). Second-generation 320-row CTA with prospective electrocardiogram-triggered volume target scanning and hybrid iterative reconstruction allows good visibility of the coronary arteries in infants with complex CHD. Body weight and the CT value in the ascending aorta are important factors influencing the visibility of the coronary arteries in infants.

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Title: Patient-related factors influencing detectability of coronary arteries in 320-row CT angiography in infants with complex congenital heart disease
Authors: Yuzo Yamasaki
Satoshi Kawanami
Takeshi Kamitani
Koji Sagiyama
Seitaro Shin
Takuya Hino
Hazumu Nagata
Hidetake Yabuuchi
Michinobu Nagao
Hiroshi Honda
Publication date: 01-09-2018
Publisher: Springer Netherlands
Published in: The International Journal of Cardiovascular Imaging / Issue 9/2018
Print ISSN: 1569-5794
Electronic ISSN: 1875-8312
DOI: https://doi.org/10.1007/s10554-018-1363-8

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Patient-related factors influencing detectability of coronary arteries in 320-row CT angiography in infants with complex congenital heart disease

Abstract

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