What type of study is this?

This is a Experimental Study study.

September 17, 2025

Whole-cerebrum Arterial Spin Labeling Perfusion at 7T with isotropic 1 mm and sub-millimeter resolution with 3D TFL-pCASL and Stack-of-Spirals

Key Points

High-resolution perfusion images were achieved, demonstrating sharpness and minimal artifacts.
The method utilized a novel 3D TFL-pCASL sequence with Stack-of-Spirals for efficient imaging.
Enhanced motion sensitivity reduction improves the quality of high-resolution brain imaging.
This work validates the potential of advanced ASL imaging techniques for precise brain structure evaluations.

Abstract

Motivation: Leveraging the benefits of 7T MRI, high-resolution Arterial Spin Labeling perfusion imaging has the potential to provide fine-grained evaluation of brain structure and function. Goal(s): We aim to achieve isotropic 1 mm and sub-millimeter resolution perfusion imaging with whole-cerebrum coverage. Approach: We developed a novel 3D TFL-pCASL sequence with Stack-of-Spirals readout, incorporating compressed sensing and advanced correction methods for spiral-related artifacts, such as GIRF and MFI. Results: high-quality perfusion images comparable to structural scans, with reduced ringing artifacts, enhanced sharpness, and minimized motion sensitivity, were demonstrated, validating the sequence's potential for ultra-high-resolution whole-brain ASL imaging at 7T. Impact: This study presents high-resolution ASL perfusion imaging at 7T, providing fine-grained assessments of brain structure and function with comparable resolutions and details of structural MRI.

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Cite This Study

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

synapsesocial.com/papers/68d4597b31b076d99fa5cb05 https://doi.org/https://doi.org/10.58530/2025/0731

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