What type of study is this?

This is a Experimental Study study.

September 17, 2025

CAIPI accelerated 3D bSSFP for laminar fMRI at 7T

Key Points

Task-based bSSFP fMRI revealed activation patterns distinct from BOLD results, suggesting a new imaging approach.
The integration of 2D-CAIPI in the 3D bSSFP technique enhanced acquisition speed and image resolution substantially.
The comparative analysis demonstrated superior spatial localization accuracy for bSSFP over traditional BOLD fMRI.
High-resolution images captured using sub-millimetre resolution techniques indicate significant advancements in non-BOLD fMRI applications.

Abstract

Motivation: Conventional T2*-weighted BOLD fMRI based on EPI sequence is limited by geometric distortions and poor localization specificity, necessitating the development of alternative imaging methods. Goal(s): To develop a high-resolution, high-SNR, distortion-free non-BOLD fMRI method and validate its feasibility for task-based fMRI. Approach: Developing a 3D bSSFP sequence with 2D-CAIPI acceleration to acquire sub-millimetre resolution functional images, allowing comparison with BOLD fMRI. Results: Task-based bSSFP fMRI reveals a reasonable activation pattern, different from that of BOLD fMRI. Impact: This study integrates 3D bSSFP acquisition into task-based fMRI, employing 2D-CAIPI acceleration to enhance acquisition speed, and conducts a comparative analysis with BOLD fMRI, highlighting the superior spatial localization accuracy of bSSFP.

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Cite This Study

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

synapsesocial.com/papers/68d4597031b076d99fa5c59a https://doi.org/https://doi.org/10.58530/2025/2328

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