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Image quality and radiation doses of volumetric 320-row computed tomography angiography with prospective elctrocardiogram-gating in the assessment of coronary arteries in neonates and infants

Danuta Roik1, Beata Kucińska2, Marek Roik3, Bożena Werner2
DOI: 10.33963/KP.a2022.0088
·
Pubmed: 35366000
Affiliations
  1. Department of Pediatric Radiology, Pediatric Teaching Clinical Hospital, Warszawa, Poland
  2. Department of Pediatric Cardiology and General Pediatrics, Medical University of Warsaw, Warszawa, Poland
  3. Department of Internal Medicine and Cardiology, Medical University of Warsaw, Warszawa, Poland

open access

Online first
Original article
Published online: 2022-04-02

Abstract

Background: Diagnostic imaging of coronary arteries is required in neonates and infants suspected for congenital or acquired coronary artery anomalies and in pre- and postoperative assessment of complex congenital heart diseases (CHD).

Aim: Our study aimed to evaluate image quality of volumetric 320-row computed tomography angiography (CTA) with prospective electrocardiogram (ECG)-gating for coronary arteries in neonates and infants with heart diseases and the analysis of factors influencing image quality and assessment of radiation dose related to the procedure.

Methods: The study included 110 CTA performed in neonates and infants with CHD.

Results: CTA were performed in 37 girls and 73 boys of median (interquartile range [IQR]) age 3.0 (0.5–5.0) months, median (IQR) body weight 5 (3.66–6.5) kg and the median heart rate  (HR) 133 (92–150) beats per minute. The orifices of left coronary artery were visible in 100% of CTA, the orifices of right coronary arteries were visible in 96%, whereas all coronary segments were assessable in 45% of CTA. Patients with non-diagnostic segments were significantly younger, median (IQR) age 2.0 (0.21–5.00) months, had lower body weight 4.6 (3.45–6.07) kg and faster HR 136.5 (120–150) beats per minute (P <0.05) than patients with diagnostic image quality in all segments (4.0, 2–6 months, 6.0, 4.2–7 kg, and 130; 110–150 beats per minute, respectively; P <0.05).

Conclusions: CTA performed with volumetric 320-row prospective ECG-gating allows for good visibility of the coronary arteries with acceptable radiation dose. Children aged >15 days, with body weight >4.85 kg and HR <130/min are good candidates for excellent quality non-invasive CTA of all segments of coronary arteries.

Abstract

Background: Diagnostic imaging of coronary arteries is required in neonates and infants suspected for congenital or acquired coronary artery anomalies and in pre- and postoperative assessment of complex congenital heart diseases (CHD).

Aim: Our study aimed to evaluate image quality of volumetric 320-row computed tomography angiography (CTA) with prospective electrocardiogram (ECG)-gating for coronary arteries in neonates and infants with heart diseases and the analysis of factors influencing image quality and assessment of radiation dose related to the procedure.

Methods: The study included 110 CTA performed in neonates and infants with CHD.

Results: CTA were performed in 37 girls and 73 boys of median (interquartile range [IQR]) age 3.0 (0.5–5.0) months, median (IQR) body weight 5 (3.66–6.5) kg and the median heart rate  (HR) 133 (92–150) beats per minute. The orifices of left coronary artery were visible in 100% of CTA, the orifices of right coronary arteries were visible in 96%, whereas all coronary segments were assessable in 45% of CTA. Patients with non-diagnostic segments were significantly younger, median (IQR) age 2.0 (0.21–5.00) months, had lower body weight 4.6 (3.45–6.07) kg and faster HR 136.5 (120–150) beats per minute (P <0.05) than patients with diagnostic image quality in all segments (4.0, 2–6 months, 6.0, 4.2–7 kg, and 130; 110–150 beats per minute, respectively; P <0.05).

Conclusions: CTA performed with volumetric 320-row prospective ECG-gating allows for good visibility of the coronary arteries with acceptable radiation dose. Children aged >15 days, with body weight >4.85 kg and HR <130/min are good candidates for excellent quality non-invasive CTA of all segments of coronary arteries.

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About this article
Title

Image quality and radiation doses of volumetric 320-row computed tomography angiography with prospective elctrocardiogram-gating in the assessment of coronary arteries in neonates and infants

Journal

Kardiologia Polska (Polish Heart Journal)

Issue

Online first

Article type

Original article

Published online

2022-04-02

Page views

25

Article views/downloads

22

DOI

10.33963/KP.a2022.0088

Pubmed

35366000

Authors

Danuta Roik
Beata Kucińska
Marek Roik
Bożena Werner

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