Free-breathing, non-contrast bSSFP MRI has shown great potential for imaging of pulmonary embolisms in patients with contraindication for contrast-enhanced computed tomography angiography. While the free-breathing approach is convenient, it limits the possibility for multiplanar reformatting which otherwise could aid in visualizing the pulmonary vasculature. In this work, we propose a methodology for deriving a motion signal from the free-breathing data and we incorporate this signal in the reconstruction pipeline to obtain a slice-aligned image stack from which multiplanar reformatting can be performed.
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