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Abstract #4337

Readout-Segment Echo-Planar Imaging of Prostate, a Strategy to Reduce Geometrical Distortion in Prostate Diffusion Weighted ImagingĀ 

Melina Hosseiny1, KyungHyun Sung1, Teeravut Tubtawee1, Voraparee Suvannarerg1, Shabnam Mortazavi1, Soheil Kooraki1, Saurab Gupta1, Afshin Azadikhah1, Justin Ching1, Ely R Felker1, David Lu1, and Steven S Raman1
1Abdominal Radiology, David Geffen School of Medicine at UCLA, Los Angeles, CA, United States

Single-Shot Echo-Planar Imaging (ssEPI)is highly susceptible to T2* blurring and geometrical distortion. This study aimed to compare the image quality between ssEPI and Readout-Segment Echo-Planar Imaging (rsEPI) for acquiring prostate DWI on 162 patients. Geometrical distortion was ranked on ssEPI and rsEPI using a five-point scale. The geometrical distortion was significantly less observed in rsEPI compared to ssEPI (P<0.01). Geometrical distortion scores of three and higher were observed in 30 individuals in ssEPI, with all having scores < 3 on rsEPI. In conclusion, using rsEPI for DWI acquisition may augment or replace ssEPI on 3T prostate mpMRI.

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