Keywords: Data Acquisition, Heart, spiral MRI, cardiac CINE, water/fat separation
Motivation: Water/fat separation can be helpful to better distinguish adipose tissue, blood and myocardium in a cardiac cine series. However, inclusion of a multi-echo acquisition in the conventional bSSFP sequence can introduce artifacts and reduce temporal efficiency.
Goal(s): To develop a fast and robust water/fat separation method for time-resolved cardiac cine imaging.
Approach: A spoiled gradient echo sequence with spiral acquisition is proposed to perform the cine acquisition with retrospectively cardiac gating.
Results: The image from the proposed method has shorter scan time, lower artifact level and lower RF deposition compared to a multi-echo bSSFP sequence.
Impact: We demonstrate the feasibility of spiral cardiac cine imaging with water/fat separation, enabling faster scanning while preserving adequate contrast among adipose tissue, blood and myocardium. This sequence also has low RF deposition with much lower SAR level for the patient.
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