Pediatric Radiology

, Volume 37, Issue 8, pp 818–825 | Cite as

Visualization of neonatal coronary arteries on multidetector row CT: ECG-gated versus non-ECG-gated technique

  • I-Chen TsaiEmail author
  • Tain Lee
  • Min-Chi Chen
  • Yun-Ching Fu
  • Sheng-Lin Jan
  • Chung-Chi Wang
  • Yen Chang
Original Article



Multidetector CT (MDCT) seems to be a promising tool for detection of neonatal coronary arteries, but whether the ECG-gated or non-ECG-gated technique should be used has not been established.


To compare the detection rate and image quality of neonatal coronary arteries on MDCT using ECG-gated and non-ECG-gated techniques.

Materials and methods

Twelve neonates with complex congenital heart disease were included. The CT scan was acquired using an ECG-gated technique, and the most quiescent phase of the RR interval was selected to represent the ECG-gated images. The raw data were then reconstructed without the ECG signal to obtain non-ECG-gated images. The detection rate and image quality of nine coronary artery segments in the two sets of images were then compared. A two-tailed paired t test was used with P values <0.05 considered as statistically significant.


In all coronary segments the ECG-gated technique had a better detection rate and produced images of better quality. The difference between the two techniques ranged from 25% in the left main coronary artery to 100% in the distal right coronary artery.


For neonates referred for MDCT, if evaluation of coronary artery anatomy is important for the clinical management or surgical planning, the ECG-gated technique should be used because it can reliably detect the coronary arteries.


Multidetector CT Coronary arteries Neonates 



We would like to express our appreciation to Mr. Larry Chia-Hon Chen (Philips Medical Systems, Taiwan) and Mr. Leon Wei-Chun Lee (Unison Tek Co. Ltd., Taiwan) for their assistance in improving the quality of neonatal cardiac CT.

Supplementary material


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Copyright information

© Springer-Verlag 2007

Authors and Affiliations

  • I-Chen Tsai
    • 1
    • 2
    • 3
    Email author
  • Tain Lee
    • 1
    • 2
    • 3
  • Min-Chi Chen
    • 1
  • Yun-Ching Fu
    • 3
    • 4
  • Sheng-Lin Jan
    • 2
    • 4
  • Chung-Chi Wang
    • 5
  • Yen Chang
    • 5
  1. 1.Department of RadiologyTaichung Veterans General HospitalTaichungTaiwan, Republic of China
  2. 2.Faculty of MedicineMedical College of Chung Shan Medical UniversityTaichungTaiwan, Republic of China
  3. 3.Department of Medicine and Institute of Clinical MedicineNational Yang Ming UniversityTaipeiTaiwan, Republic of China
  4. 4.Section of Paediatric Cardiology, Department of PaediatricsTaichung Veterans General HospitalTaichungTaiwan, Republic of China
  5. 5.Section of Cardiovascular Surgery, Department of SurgeryTaichung Veterans General HospitalTaichungTaiwan, Republic of China

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