Line Profile Measure as a Stopping Criterion in CG-SENSE Algorithm
- Authors: Khan M.1, Aslam T.1, Shahzad H.1,2, Omer H.1
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Affiliations:
- Electrical Engineering Department, COMSATS Institute of IT
- National Centre for Physics
- Issue: Vol 48, No 3 (2017)
- Pages: 227-240
- Section: Original Paper
- URL: https://journals.rcsi.science/0937-9347/article/view/247649
- DOI: https://doi.org/10.1007/s00723-017-0860-6
- ID: 247649
Cite item
Abstract
Conjugate gradient SENSE (CG-SENSE) is a parallel magnetic resonance imaging reconstruction algorithm which solves the inversion problem of SENSE iteratively. One major limitation of CG-SENSE is the appropriate choice of the number of iterations required for good reconstruction results. Fewer iterations result in aliasing artifacts and too many iterations result in an increased noise level. This paper proposes a novel method to define the stopping criterion of CG-SENSE algorithm which is based on the use of correlation measure between the line profiles of the reconstructed images in the current and the previous iterations. The results are compared with Bregman distance-stopping criterion. Artifact power and peak signal-to-noise ratio are used to quantify the quality of the reconstructed images. The results demonstrate that the line profile correlation measure acts as an effective stopping criterion in CG-SENSE.
About the authors
Mahwish Khan
Electrical Engineering Department, COMSATS Institute of IT
Email: hassan.shahzad@gmail.com
Pakistan, Islamabad
Taquwa Aslam
Electrical Engineering Department, COMSATS Institute of IT
Email: hassan.shahzad@gmail.com
Pakistan, Islamabad
Hassan Shahzad
Electrical Engineering Department, COMSATS Institute of IT; National Centre for Physics
Author for correspondence.
Email: hassan.shahzad@gmail.com
Pakistan, Islamabad; Islamabad
Hammad Omer
Electrical Engineering Department, COMSATS Institute of IT
Email: hassan.shahzad@gmail.com
Pakistan, Islamabad