Comparison of prostate imaging quality at different b values between EPI-DWI and RESOLVE-DWI on 3T MRI
ZHANG Chi
BAI Jinsong
HUANG Jingyi
AN Huanping
GONG Yikun
ZHU Qian
LIU Xi
ZHU Wei
ZHANG Haitao
Abstract：Objective To identify the optimal scanning sequence and parameters for prostate MR diffusion imaging,by comparing the effects of different b values in two diffusion imaging sequences:EPI-DWI and RESOLVE-DWI on the prostate image quality on 3.0 tesla magnetic resonance imaging(3T MRI).Methods A retrospective analysis was conducted on 70 prostate cancer patients who met the enrollment ranking standards at Hanzhong people's hospital from January 2023 to December 2024.All patients underwent both scans of EPI-DWI and RESOLVE-DWI with b values of 50,800,1400,2000 and 3000 s/mm2.The scanning parameters for EPI-DWI were as follows:TR 6800 ms,TE 59 ms,ETL 114,Bandwidth 1566 Hz/Px,and for RESOLVE-DWI are as follows:TR 5870 ms,TE 58 ms,ETL 79,Bandwidth 1078 Hz/Px.The readout was divided into 5 segments.The quality of the prostate images was compared.Results RESOLVE-DWI group showed higher overall subjective image quality scores compared to EPI-DWI group(P<0.05).RESOLVE-DWI group exhibited higher overall SNR(P<0.05).For both sequences,SNR peaked at b=50,with no statistical difference between b=50 and b=800(P>0.05).Similarly,RESOLVE-DWI group showed superior CNR(P<0.05).Both sequences peak of CNR values were observed at b=800 and 1400 s/mm2,with no significant difference between b=800 and b=1400 s/mm2(P>0.05).Conclusion RESOLVE-DWI is the preferred sequence for prostate 3T magnetic resonance diffusion imaging.Selecting b values of 50,800 and 1400 s/mm2 provides optimal SNR and CNR,offering reliable imaging support for the diagnosis of prostate cancer.
Keywords：prostatemagnetic resonance imagingdiffusion-weighted sequencesignal-to-noise ratio
Publication Date：2025-12-20
Online Publishing Date：2026-01-07(First online date of this platform, not the publication date of the document)
Pages：6( 1575-1580 )