Keywords: Low-Field MRI, Contrast Mechanisms, WM/GM contrast
Motivation: Low-field MRI, known for its accessibility and portability, faces challenges in distinguishing grey matter (GM) from white matter (WM) due to lower signal-to-noise ratios and converging relaxation times.
Goal(s): This study aimed to improve WM/GM contrast in low-field MRI using a T1-weighted sequence with short inversion time (TI).
Approach: T1-weighted sequence with optimized TI (90ms) was used to enhance contrast maintaining good SNR. Other TIs and resolution were also tested.
Results: Results showed consistently high WM/GM contrast across subjects and resolution, with an optimal TI of 90 ms balancing contrast and SNR.
Impact: This study demonstrates that a T1-weighted sequence with optimized inversion time effectively enhances grey-to-white matter contrast in low-field MRI, offering reliable tissue differentiation for different subjects and resolutions.
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