Abstract #3337

Testing diagnostic quality after speeding up prostate MRI by reducing the number of echo-trains in T2-weighted TSE.

Nida Mir¹, Quintin van Lohuizen², Jurgen J Fütterer ^3,4, Derya Yakar ^2,5, Thomas C Kwee^2,6, Jelmer M Wolterink⁷, and Frank F. J Simonis¹

¹Magnetic Detection and Imaging, University of Twente, Enschede, Netherlands, ²Department of Radiology, University Medical Center Groningen, Groningen, Netherlands, ³Robotics and Mechatronics, University of Twente, Enschede, Netherlands, ⁴Minimally Invasive Image-Guided Interventions Center, Radboud University Medical Center, Nijmegen, Netherlands, ⁵Department of Radiology, Netherlands Cancer Institute, Amsterdam, Netherlands, ⁶Department of Nuclear Medicine and Molecular Imaging, University Medical Center Groningen, Groningen, Netherlands, ⁷Department of Applied Mathematics, University of Twente, Enschede, Netherlands

Synopsis

Keywords: Prostate, Prostate, Undersampling, PI-RADS

Motivation: Increasing prostate cancer cases are leading to a rising demand for prostate MRI, which is a time-consuming protocol. Speeding up of this protocol will help relieve the rising pressure on the healthcare system.

Goal(s): To speed up the T2W TSE by undersampling the data, while maintaining the diagnostic outcome.

Approach: Echo-trains with center-lines farthest from the k-space center are removed, to undersample the data semi-incoherently , followed by a Compressed Sense reconstruction.

Results: Up to 17% time gain can be achieved while the diagnostic outcome remains unaffected.

Impact: The scan time of T2W TSE can be reduced by selectively removing echo-trains based on their center-line distance to the k-space center, without affecting the diagnostic outcome, defined by the PI-RADS score and qualitative parameter ratings.

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