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Application of prospective ECG-gated multiphase scanning for coronary CT in children with different heart rates

Shilong Tang1, Guanping Zhang2, Zhuo Chen2

  • 1Department of Radiology Children's Hospital of Chongqing Medical University, National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing, 400014, China.

Japanese Journal of Radiology
|May 28, 2021
PubMed

Insights

Prospective ECG-gated multiphase scanning significantly reduces radiation dose in pediatric coronary CT angiography. This advanced technique maintains excellent image quality, making it a safer option for young patients.

Area of Science:

  • Pediatric radiology
  • Cardiovascular imaging
  • Medical imaging technology

Background:

  • Coronary CT angiography (CCTA) is crucial for diagnosing pediatric heart conditions.
  • Radiation exposure is a significant concern in pediatric imaging.
  • Optimizing scanning techniques is essential to balance diagnostic accuracy and safety.

Purpose of the Study:

  • To evaluate the efficacy of prospective ECG-gated multiphase scanning in pediatric coronary CT imaging.
  • To compare radiation dose and image quality between prospective and retrospective ECG-gated techniques.
  • To assess the impact of different heart rates on scanning outcomes.

Main Methods:

  • Retrospective analysis of 160 children (control group) using retrospective ECG-gated scanning.
  • Prospective evaluation of 240 children (study group) using prospective ECG-gated multiphase scanning.
  • Comparison of radiation dose and coronary artery image quality at matched heart rates.

Main Results:

  • The prospective group demonstrated a 72% reduction in radiation dose compared to the retrospective group (P < 0.05).
  • No significant difference in coronary artery image quality was observed between the groups at the optimal phase (P > 0.05).
  • The technique proved effective across various pediatric heart rates.

Conclusions:

  • Prospective ECG-gated multiphase scanning is a superior technique for pediatric coronary CT imaging.
  • This method significantly lowers radiation exposure without compromising diagnostic image quality.
  • It represents a safer and effective approach for evaluating coronary arteries in children.
Abstract

Keywords:
ChildrenComputed tomographyCoronary arteriesProspective ECG-gating techniqueRetrospective ECG-gating technique

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