Zero echo time (ZTE) imaging is an established approach for three-dimensional imaging of tissues and materials with ultrashort T2* relaxation times. An intrinsic disadvantage of this approach are missing data points in the center region of k-space due to hardware limitations. These missing points are often retrospectively interpolated or subsequently acquired using single-point imaging approaches or additional ZTE acquisitions with decreased resolutions. The presented approach relies on an interleaved combination of ZTE read-outs with different resolutions in combination with Compressed Sensing, to acquire the k-space center, thus enabling k-space based self-gating.
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