Abstract #2897

Breath-hold Multi-contrast 3D Dark Blood MRI of the Heart and Great Vessels with Gated Unbalanced T1 Relaxation-Enhanced Steady-State (uT1RESS)

Robert R Edelman^1,2, Nondas Leloudas³, Jianing Pang⁴, and Ioannis Koktzoglou^3,5

¹Radiology, NorthShore University HealthSystem, EVANSTON, IL, United States, ²Feinberg School of Medicine, Northwestern University, Chicago, IL, United States, ³Radiology, NorthShore University HealthSystem, Evanston, IL, United States, ⁴Siemens Medical Solutions USA, Chicago, IL, United States, ⁵Pritzker School of Medicine, University of Chicago, Chicago, IL, United States

We recently described a novel class of steady-state pulse sequence called T1 Relaxation-Enhanced Steady-State (T₁RESS). The unbalanced variant, called uT₁RESS, generates dark blood images without the need to apply additional preparation modules. We sought to determine whether an electrocardiogram (ECG)-gated implementation of uT₁RESS could be used to generate dark blood images for evaluation of the heart and great vessels. A pilot study of healthy volunteers and patients undergoing cardiac MRI was approved by the hospital institutional review board. Initial results suggest that ECG-gated uT₁RESS shows promise for volumetric multi-contrast evaluation of the heart and great vessels.

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