Keywords: Image Reconstruction, Hyperpolarized MR (Non-Gas), Cardiac phase detection
Motivation: The predetermined trigger delay may fail to acquire 13C images at an unstable heart rate and cause a misalignment between the cardiac phases depicted in structural and metabolic images.
Goal(s): Aim to exploit the volumetric PBSR algorithm to establish an automated alignment workflow to identify the actual cardiac phase for HP 13C images.
Approach: Image pairs of multiple 1H cardiac phases and single-phase 13C images will be reconstructed by 3D PBSR, and the pair with the best similarity/in-focus index will be elected.
Results: The digital phantom and an in-vivo HP 13C cardiac image demonstrated the feasibility of cardiac phase detection.
Impact: The currently proposed automated alignment workflow identifies the actual cardiac phase when the HP 13C images are acquired, and this technique will potentially benefit patients with arrhythmia or pediatric populations.
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