Wideband myocardial T2 mapping in patients with implantable cardiac devices at 1.5T

Motivation: Myocardial T2 mapping in the presence of implantable cardiac devices is typically not performed due to severe image artifacts that result in inaccurate T2 values. Goal(s): To enable myocardial T2 mapping in the presence of implantable cardiac devices by reducing device-related artifacts and providing accurate T2 values. Approach: A 2D breath-held, ECG-triggered, single-shot wideband GRE T2 mapping sequence, integrating a wideband T2preparation, was developed on a 1.5T system and tested in phantoms, volunteers, and patients. Results: The proposed sequence effectively reduced device-related artifacts and provided accurate myocardial T2 values in both phantom and in-vivo studies, addressing the limitations of conventional GRE T2 mapping. Impact: The proposed wideband T2 mapping sequence represents a significant advancement in myocardial T2 mapping for patients with implantable cardiac devices, offering a reliable method for assessing myocardial inflammation and edema, where conventional methods fail.