Lung MRI with excellent image quality has been demonstrated at 0.55T, largely due to reduced susceptibility effects. Here, we present joint estimation of lung parenchyma transverse relaxation rates $$$R_{2}$$$, $$$R_{2}^{\prime}$$$, and off-resonance $$$\Delta f$$$. A custom echo-shifted turbo spin echo (TSE) pulse sequence with ECG triggering and breath hold was performed in 4 healthy volunteers, resulting in the mean $$$R_{2}$$$ of 23.4s-1, $$$R_{2}^{\prime}$$$ of 53.9s-1, and $$$\Delta f$$$ of 45.7Hz. This work demonstrates the feasibility of echo-shifted TSE for the estimation of three parameters of interest in lung MRI, and confirms prior measurements made with separate pulse sequences.
This abstract and the presentation materials are available to members only; a login is required.