Two-Phase Contrast Injection Protocol for Pediatric Cardiac Computed Tomography in Children with Congenital Heart...

Area of Science:

• Radiology
• Pediatric Cardiology
• Medical Imaging

Background:

• Congenital heart disease (CHD) in children often requires detailed cardiac imaging.
• Optimizing contrast enhancement in pediatric cardiac computed tomography (CT) is crucial for accurate diagnosis.
• Traditional contrast protocols may have limitations in pediatric populations.

Purpose of the Study:

• To evaluate the efficacy of a novel two-phase contrast injection protocol.
• To assess contrast enhancement and diagnostic image quality in pediatric cardiac CT for CHD.
• To determine the optimal contrast delivery for pediatric cardiac CT examinations.

Main Methods:

• Retrospective analysis of 43 pediatric patients with CHD undergoing cardiac CT.
• Utilized a high-pitch, dual-source cardiac CT scanner (70 kVp) with a two-phase contrast protocol.
• Measured contrast attenuation in major cardiac chambers and vessels, comparing results using statistical tests.

Main Results:

• The two-phase protocol achieved excellent contrast enhancement across all evaluated cardiac structures.
• Median attenuation values exceeded 250 Hounsfield Units (HU) in most sites, indicating diagnostic quality.
• No significant difference in diagnostic success rates was observed between the inferior vena cava and other sites.

Conclusions:

• A two-phase contrast injection protocol is effective for achieving optimal contrast enhancement in pediatric cardiac CT.
• This protocol facilitates high-quality imaging for the assessment of congenital heart disease in children.
• The findings support the utility of this protocol for routine pediatric cardiac CT.