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Abstract #1903

Iterative Low-Rank Infilling Approach for Zero Echo-Time (ZTE) Imaging

Zimu Huo1, José de Arcos2, Florian Wiesinger3, Joshua Kaggie1, and Martin Graves1
1Department of Radiology, Univeristy of Cambridge, Cambridge, United Kingdom, 2GE Healthcare, Little Chalfont, Amersham, United Kingdom, 3GE Healthcare, Munich, Germany

Synopsis

Keywords: Image Reconstruction, Parallel Imaging

Motivation: The short, but non-zero, time taken to switch between transmit and receive results in a dead-time gap in Zero Echo-Time (ZTE) imaging, which leads to substantial reconstruction artifacts.

Goal(s): Determine the missing data in the dead-time gap without any additional acquisition.

Approach: We reformulate the reconstruction problem as a nuclear norm minimization problem to implicitly fill the missing data through iterative reconstruction.

Results: The proposed method demonstrates that the missing data can be filled using low-rank without sacrificing image quality.

Impact: We present a method for filling the dead-time gap in ZTE imaging using low-rank that does not require the collection of additional data.

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