Wave-controlled aliasing in parallel imaging magnetization-prepared gradient echo (wave-CAIPI MPRAGE) accelerates...

Area of Science:

• Radiology
• Medical Imaging
• Pediatric Neurology

Background:

• Conventional Magnetization-Prepared Rapid Gradient-Echo (MPRAGE) is a standard for intracranial lesion detection.
• Faster imaging techniques are needed to improve pediatric MRI efficiency and reduce motion artifacts.

Purpose of the Study:

• To compare accelerated post-contrast wave-controlled aliasing in parallel imaging (wave-CAIPI) MPRAGE with conventional MPRAGE for diagnosing intracranial lesions in pediatric patients.
• To evaluate diagnostic performance and image quality parameters of both MRI sequences.

Main Methods:

• Retrospective analysis of 23 pediatric patients undergoing both post-contrast wave-CAIPI and conventional MPRAGE.
• Independent assessment of intracranial lesions by two radiologists.
• Quantitative (CNR, CR, SNR) and qualitative (image quality, differentiation, artifacts) parameter evaluation.

Main Results:

• Wave-CAIPI MPRAGE and conventional MPRAGE showed 100% agreement in detecting intracranial lesions.
• Scan time for wave-CAIPI MPRAGE was significantly reduced (2 min 39 s vs. 5 min 46 s).
• Wave-CAIPI MPRAGE had lower SNR and overall image quality but comparable CNR, CR, gray-white matter differentiation, basal ganglia/sulci demarcation, and motion artifacts.

Conclusions:

• Accelerated wave-CAIPI MPRAGE is a reliable and faster alternative to conventional MPRAGE for diagnosing pediatric intracranial lesions.
• The technique offers comparable diagnostic performance, making it suitable for clinical use in pediatric neuroimaging.