Clinical performance of contrast enhanced abdominal pediatric MRI with fast combined parallel imaging compressed...

Area of Science:

• Radiology
• Medical Imaging
• Biomedical Engineering

Background:

• Pediatric MRI requires efficient imaging techniques to minimize scan times and reduce motion artifacts.
• Contrast-enhanced MRI is crucial for diagnosing abdominal pathologies in children.
• Traditional parallel imaging methods can be time-consuming, limiting clinical applicability.

Purpose of the Study:

• To evaluate the clinical feasibility and performance of a novel accelerated MRI reconstruction method.
• To assess a combined parallel imaging compressed sensing (PICS) technique with coil compression for rapid image reconstruction.
• To determine if this technique improves anatomical structure delineation in pediatric contrast-enhanced abdominal MRI.

Main Methods:

• Twenty-nine pediatric patients underwent dynamic contrast-enhanced MRI at 3 Tesla using a 3D SPGR sequence with high acceleration (R = 7.2).
• Undersampled data were reconstructed using traditional parallel imaging and PICS with and without coil compression.
• Two radiologists blindly evaluated image quality and anatomical delineation.

Main Results:

• Fast reconstruction using PICS with coil compression did not compromise image quality.
• The PICS method with coil compression achieved a significantly higher mean score for structural delineation (4.1/5) compared to traditional parallel imaging (3.1/5).
• Fair to substantial interobserver agreement was achieved for structural delineation assessment.

Conclusions:

• The developed fast PICS method with coil compression is clinically feasible for pediatric abdominal MRI.
• This accelerated technique demonstrates potential for enhancing structural delineation compared to conventional parallel imaging.
• Further clinical validation is warranted to confirm its benefits in pediatric populations.