Ultra-high gradient performance 3-Tesla MRI for super-fast and high-quality prostate imaging: initial experience

Area of Science:

• Radiology
• Medical Imaging
• Prostate Cancer Diagnostics

Background:

• Prostate cancer diagnosis relies on multiparametric MRI (mpMRI).
• Shorter MRI protocols are desirable for patient comfort and throughput.
• Ultra-high gradient MRI systems offer potential for faster imaging.

Purpose of the Study:

• To implement and evaluate a super-fast biparametric MRI (bpMRI) protocol.
• To assess image quality and PI-RADS score agreement with standard mpMRI.
• To leverage a new 3.0-T MRI system with ultra-high gradient performance.

Main Methods:

• Prospective mpMRI acquisition on a 3.0-T ultra-high gradient system (200 mT/m).
• bpMRI protocol extracted (T2-weighted, DWI b0/800, b1500).
• Image quality rated (Likert scale); PI-RADS 2.1 scores assessed by multiple readers.

Main Results:

• bpMRI acquisition time reduced by 62% (5.5 min vs. 14.8 min).
• Excellent image quality for T2-weighted and DWI sequences.
• Excellent PI-RADS agreement between bpMRI and mpMRI (Cohen's κ: 0.91-0.95).
• Good interrater reliability (Fleiss' κ: 0.86).

Conclusions:

• Ultra-high gradient MRI enables rapid, high-quality bpMRI for prostate imaging.
• The fast bpMRI protocol demonstrates excellent agreement with full mpMRI.
• This approach facilitates accelerated and high-quality prostate MRI examinations in clinical practice.