Optimizing 3D Rotational Angiography for Congenital Cardiac Catheterization

Area of Science:

• Medical Imaging
• Interventional Cardiology
• Pediatric Cardiology

Background:

• Three-dimensional rotational angiography (3DRA) is integral to congenital cardiac catheterization (CCC).
• Systematic analysis of factors influencing 3DRA quality in CCC is lacking.
• Optimization of 3DRA approach is crucial for diagnostic accuracy.

Purpose of the Study:

• To identify variables associated with high-quality (HQ) versus low-quality (LQ) 3DRA in CCC.
• To develop evidence-based guides for optimizing 3DRA in pediatric cardiac procedures.
• To establish a nomogram for predicting HQ 3DRA probability.

Main Methods:

• Retrospective analysis of 208 3DRAs performed on the Canon Infinix-I platform.
• Dichotomous grading of 3DRA reconstructions by three interventionalists into HQ and LQ.
• Univariable and multivariable logistic regression analyses to determine significant factors.

Main Results:

• HQ 3DRA (88%) was associated with lower patient weight (OR 0.97), greater total injection volume (OR 1.04), and more dilute contrast solution (OR 0.97).
• Higher total injection volume and more dilute contrast were key predictors of HQ 3DRA.
• A novel 3DRA Nomogram was developed based on these findings.

Conclusions:

• Patient weight, total injection volume, and contrast solution dilution are critical factors for achieving HQ 3DRA in CCC.
• The developed nomogram and guides offer evidence-based strategies for optimizing 3DRA.
• This study provides the first systematic approach to contrast dosing for 3DRA in pediatric cardiac interventions.