Improved IVIM Imaging in Adolescent Crohn's Disease Using Dual-Echo EPI Distortion and Motion Correction.

ABSTRACT: Diffusion-weighted imaging (DWI) during MR enterography helps identify bowel inflammation in Crohn's disease (CD). However, image quality is compromised by geometric distortions from B₀ field variations and physiological motion, making it challenging for radiologists to correlate findings between DWI and structural images. Traditional correction methods using reversed polarity scans are ineffective due to motion between acquisitions, which limits accurate estimation of intravoxel incoherent motion (IVIM) parameters. We propose a dual-echo echo-planar imaging (EPI) method that retrospectively corrects both geometric distortions and motion in 3T bowel DWI by accounting for field changes during peristalsis and breathing. We added a 5- to 7-min dual-echo EPI DW sequence (eight b-val

SUBMITTER: Ariyurek C 

PROVIDER: S-EPMC12392371 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature