Long-T2 Suppressed ZTE with subspace reconstruction for bone imaging

Motivation: Recent work has shown that achieving CT-like contrast highlighting bone can be obtained either indirectly through contrast inversion or directly through long-T2 suppression. While direct methods offer advantages, existing techniques are inefficient, resulting in long scan times. Goal(s): To create an efficient long-T2 suppressed bone imaging MR scan. Approach: We combined inversion recovery long-T2 suppression in a Zero Echo-Time sequence with subspace reconstruction to allow continuous data collection during the scan, eliminating dead time and improving efficiency. Results: A two minute silent scan that produces bright bone and suppressed soft tissuesImpact: We have created a fast positive contrast bone MRI scan that has potential as an alternative to CT