Experimental O-space turbo spin echo imaging

Wang, Haifeng, Tam, Leo, Kopanoglu, Emre ORCID: https://orcid.org/0000-0001-8982-4441, Peters, Dana C., Constable, R. Todd and Galiana, Gigi 2016. Experimental O-space turbo spin echo imaging. Magnetic Resonance in Medicine 75 (4) , pp. 1654-1661. 10.1002/mrm.25741

Full text not available from this repository.

Abstract

Purpose Turbo spin echo (TSE) imaging reduces imaging time by acquiring multiple echoes per repetition (TR), requiring fewer TRs. O-space can also require fewer TRs by using a combination of nonlinear magnetic gradient fields and surface coil arrays. Although to date, O-space has only been demonstrated for gradient echo imaging, it is valuable to combine these two techniques. However, collecting multiple O-space echoes per TR is difficult because of the different local k-space trajectories and variable T2-weighting. Theory and Methods A practical scheme is demonstrated to combine the benefits of TSE and O-space for highly accelerated T2-weighted images. The scheme uses a modified acquisition order and filtered projection reconstruction to reduce artifacts caused by T2 decay, while retaining T2 contrast that corresponds to a specific echo time. Results The experiments revealed that the proposed method can produce highly accelerated T2-weighted images. Moreover, the method can generate multiple images with different T2 contrasts from a single dataset. Conclusions The proposed O-space TSE imaging method requires fewer echoes than conventional TSE and fewer repetitions than conventional O-space imaging. It retains resilience to undersampling, clearly outperforming Cartesian SENSE at high levels of undersampling, and can generate undistorted images with a range of T2 contrast from a single acquired dataset.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Cardiff University Brain Research Imaging Centre (CUBRIC) Psychology
Publisher:	John Wiley & Sons
ISSN:	0740-3194
Date of Acceptance:	26 March 2015
Last Modified:	02 Nov 2022 11:09
URI:	https://orca.cardiff.ac.uk/id/eprint/101049

Citation Data

Cited 6 times in Scopus. View in Scopus. Powered By Scopus® Data

Actions (repository staff only)

Edit Item