Free-breathing 2D radial cine MRI with respiratory auto-calibrated motion correction (RAMCO).

ABSTRACT:

Purpose

To develop a free-breathing (FB) 2D radial balanced steady-state free precession cine cardiac MRI method with 100% respiratory gating efficiency using respiratory auto-calibrated motion correction (RAMCO) based on a motion-sensing camera.

Methods

The signal from a respiratory motion-sensing camera was recorded during a FB retrospectively electrocardiogram triggered 2D radial balanced steady-state free precession acquisition using pseudo-tiny-golden-angle ordering. With RAMCO, for each acquisition the respiratory signal was retrospectively auto-calibrated by applying different linear translations, using the resulting in-plane image sharpness as a criterium. The auto-calibration determines the optimal magnitude of the linear translations for each of the in-plane direct

SUBMITTER: Krishnamoorthy G 

PROVIDER: S-EPMC10100319 | biostudies-literature | 2023 Mar

REPOSITORIES: biostudies-literature