Faculty Collaboration Database

Reduction of artifacts by optimization of the sensitivity map in sensitivity-encoded spectroscopic imaging. Magn Reson Med 2005 Jan;53(1):30-4

Date

02/04/2005

Pubmed ID

15690499

DOI

10.1002/mrm.20325

Scopus ID

2-s2.0-12144267410 (requires institutional sign-in at Scopus site)   16 Citations

Abstract

Sensitivity-encoded spectroscopic imaging (SENSE-SI) reduces scanning time by using multiple coils for parallel signal acquisition. Significant artifacts could be induced by SENSE-SI, mainly due to the low-resolution nature of spectroscopic imaging. The present study introduces a novel method to reduce the artifacts. High-resolution sensitivity maps are used in low-resolution SENSE reconstruction. An intermediate unaliased image is obtained after SENSE reconstruction. Based on the intermediate image, the sensitivity maps are optimized and then the SENSE reconstruction is performed again. The final unaliased image has significantly reduced artifacts.

Author List

Zhao X, Prost RW, Li Z, Li SJ

MESH terms used to index this publication - Major topics in bold

Algorithms
Artifacts
Brain
Humans
Image Processing, Computer-Assisted
Magnetic Resonance Imaging
Magnetic Resonance Spectroscopy