Work

Novel structured low-rank algorithm to recover spatially smooth exponential image time series

Year: 2017

Type: conference-paper

Abstract: We propose a structured low rank matrix completion algorithm to recover a time series of images consisting of linear combination of exponential parameters at every pixel, from undersampled Fourier measurements. The spatial smoothness of these parameters is exploited along with the exponential structure of the time series at every pixel, to derive an annihilation relation in the k - t domain. This annihilation relation translates into a structured low rank matrix formed from the k - t samples. We demonstrate the algorithm in the parameter mapping setting and show significant improvement over state of the art methods.

Source: IEEE International Symposium on Biomedical Imaging (ISBI)

DOI: 10.1109/isbi.2017.7950454

Authors: Arvind Balachandrasekaran, Mathews Jacob

Institution: University of Iowa

Language: English

Topic: Sparse and Compressive Sensing Techniques

Subfield: Computational Mechanics

Field: Engineering

Domain: Physical Sciences

Open Access status: green

Funder: National Institute of Biomedical Imaging and Bioengineering

Award: Novel Computational Framework for Free-Breathing & Ungated Dynamic MRI