Joint Multicontrast MRI Reconstruction

Lior Weizman, João F. C. Mota, Pingfan Song, Yonina C. Eldar, Miguel Raul Dias Rodrigues

Research output: Contribution to conferencePaper

Abstract

Joint reconstruction is relevant for a variety of medicalimaging applications, where multiple images are acquired in parallel orwithin a single scanning procedure. Examples include joint reconstruction of different medical imaging modalities (e.g. CT and PET) and various MRI applications (e.g. different MR imaging contrasts of the same patient). In this paper we present an approach for joint reconstruction of two MR images, based on partial sampling of both. We assume each MR image has a limited number of edges, that is, low total variation,but they are similar in the sense that many of the edges overlap. We examine synthetic phantoms representing T1 and T2 imaging contrasts and realistic T1-weighted and T2-weighted images of the same patient. We show that our joint reconstruction approach outperforms conventional TV-based MRI reconstruction for each image solely. Results are shown both visually and numerically for sampling ratios of 4%-20%, and consist of an improvement of up to 3.6 dB.
Original languageEnglish
Publication statusPublished - 2017
Event6th Signal Processing with Adaptive Sparse Structured Representations workshop 2017 - Lisbon, Portugal
Duration: 5 Jun 20178 Jun 2017

Workshop

Workshop6th Signal Processing with Adaptive Sparse Structured Representations workshop 2017
Abbreviated titleSPARS 2017
CountryPortugal
CityLisbon
Period5/06/178/06/17

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  • Cite this

    Weizman, L., Mota, J. F. C., Song, P., Eldar, Y. C., & Rodrigues, M. R. D. (2017). Joint Multicontrast MRI Reconstruction. Paper presented at 6th Signal Processing with Adaptive Sparse Structured Representations workshop 2017, Lisbon, Portugal. http://spars2017.lx.it.pt/index_files/papers/SPARS2017_Paper_88.pdf