High-resolution anatomical imaging of the fetal brain with a reduced field of view using outer volume suppression.

ABSTRACT:

Purpose

To achieve high-resolution fetal brain anatomical imaging without introducing image artifacts by reducing the FOV, and to demonstrate improved image quality compared to conventional full-FOV fetal brain imaging.

Methods

Reduced FOV was achieved by applying outer volume suppression (OVS) pulses immediately prior to standard single-shot fast spin echo (SSFSE) imaging. In the OVS preparation, a saturation RF pulse followed by a gradient spoiler was repeated three times with optimized flip-angle weightings and a variable spoiler scheme to enhance signal suppression. Simulations and phantom and in-vivo experiments were performed to evaluate OVS performance. In-vivo high-resolution SSFSE images acquired using the proposed approach were compared with conventional and high-r

SUBMITTER: Jang M 

PROVIDER: S-EPMC11262973 | biostudies-literature | 2024 Oct

REPOSITORIES: biostudies-literature