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Abstract #2421

Navigator-free, high-resolution prostate diffusion imaging: Multi-Shot EPI with Multi-Scale Low-Rank Reconstruction

Yiming Dong1, Kirsten Koolstra2, David Atkinson3, Matthias J.P. van Osch1, and Peter Börnert1,4
1C.J. Gorter MRI Center, Department of Radiology, LUMC, Leiden, Netherlands, 2Philips, Best, Netherlands, 3Centre for Medical Imaging, University College London, London, United Kingdom, 4Philips Research Hamburg, Hamburg, Germany

Synopsis

Keywords: Diffusion Reconstruction, Prostate

Motivation: Prostate DWI is an important contrast for the diagnosis of prostate cancer.

Goal(s): The aim is to achieve prostate DW images and ADC maps with less-geometric-distortion, high-resolution and high signal-to-noise ratio (SNR).

Approach: A novel multi-scale low-rank reconstruction approach is introduced to improve multi-shot EPI diffusion-weighted imaging of the prostate. It addresses the ability to jointly reconstruct images over all b-value/diffusion directions at multiple different spatial scales without loss of contrast/structure information.

Results: Applied to healthy volunteers using different resolution protocols, the method demonstrates significant improvements in image resolution and SNR compared to a state-of-the-art reference method in a clinically acceptable scan time.

Impact: This multi-scale, low-rank reconstruction approach for prostate DWI can significantly improve the quality of diagnostic images, benefiting clinicians and patients by enabling more accurate prostate cancer diagnoses within short scan times.

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