What type of study is this?

This is a Quantitative Study study.

September 17, 2025

Towards synthetic T2-weighted imaging based on multiple acquisition bSSFP at 0.55T

Key Points

Synthetic T2-weighted imaging based on multiple bSSFP acquisitions enhances low-field MRI utility.
The method achieved negligible bias in T2 estimation for gray matter (<8 ms) and white matter (<4 ms) under a SNR >50.
Voxel-wise estimation of NMR parameters demonstrates significant advancements in relaxometry techniques.
The findings highlight the potential for synthetic imaging applications in low-field strength MRI environments.

Abstract

Motivation: Low-field MRI systems offer excellent image quality and SNR-efficiency with balanced-SSFP. T2 contrast remains a major unmet need when using bSSFP. Goal(s): To develop a multi-acquisition bSSFP-based method for synthetic T2-weighted imaging suitable for mid- and low-field strengths including 0.55T. Approach: We leverage the geometric properties of the bSSFP signal, with six phase-cycles and two flip angles, to estimate T2,T1,M0 on a voxel-wise basis. We evaluate performance through simulations, ISMRM/NIST phantom experiments, and T2-weighted brain imaging at 0.55T. Results: The proposed method demonstrates negligible-bias in T2-estimation for GM(50, and enables synthetic T2-weighted images. Impact: We demonstrate synthetic T2-weighted imaging based on multiple bSSFP acquisitions, and voxel-wise estimation of NMR parameters. This could be useful for relaxometry and synthetic imaging at mid and low-field strengths where bSSFP performance is favorable.

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Cite This Study

Keskin et al. (Tue,) studied this question.

synapsesocial.com/papers/68d45b1b31b076d99fa5d45e https://doi.org/https://doi.org/10.58530/2025/1646

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