Fast pulse design for parallel transmission in MRI using under-determined systems

Shuo Feng, Jim Ji

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Spatial tailored RF pulses in parallel transmission can be designed using a spatial domain method under the small-tip-angle approximation. Parallel transmission pulse design problems are normally well conditioned, i.e., over-determined, since data points are from the target excitation pattern, which can be sampled at arbitrary high resolution. However, the computation cost in RF pulses design can be very high, especially for multi-channel three-dimensional pulses. In this work, we propose an efficient method to design parallel RF pulses by using system matrices that are under-determined. Computer simulations show that the proposed method can gain up to 19 times computation speedup while maintaining the excitation accuracy for smooth patterns.

Original languageEnglish
Title of host publicationProceedings - IEEE-EMBS International Conference on Biomedical and Health Informatics: Global Grand Challenge of Health Informatics, BHI 2012
Pages671-674
Number of pages4
DOIs
Publication statusPublished - 2012
Externally publishedYes
EventIEEE-EMBS International Conference on Biomedical and Health Informatics, BHI 2012. In Conj. with the 8th Int. Symp.on Medical Devices and Biosensors and the 7th Int. Symp. on Biomedical and Health Engineering - Hong Kong and Shenzhen, China
Duration: 2 Jan 20127 Jan 2012

Other

OtherIEEE-EMBS International Conference on Biomedical and Health Informatics, BHI 2012. In Conj. with the 8th Int. Symp.on Medical Devices and Biosensors and the 7th Int. Symp. on Biomedical and Health Engineering
CountryChina
CityHong Kong and Shenzhen
Period2/1/127/1/12

Fingerprint

Magnetic resonance imaging
Computer Simulation
Costs and Cost Analysis
Computer simulation
Costs

ASJC Scopus subject areas

  • Biomedical Engineering
  • Health Informatics

Cite this

Feng, S., & Ji, J. (2012). Fast pulse design for parallel transmission in MRI using under-determined systems. In Proceedings - IEEE-EMBS International Conference on Biomedical and Health Informatics: Global Grand Challenge of Health Informatics, BHI 2012 (pp. 671-674). [6211672] https://doi.org/10.1109/BHI.2012.6211672

Fast pulse design for parallel transmission in MRI using under-determined systems. / Feng, Shuo; Ji, Jim.

Proceedings - IEEE-EMBS International Conference on Biomedical and Health Informatics: Global Grand Challenge of Health Informatics, BHI 2012. 2012. p. 671-674 6211672.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Feng, S & Ji, J 2012, Fast pulse design for parallel transmission in MRI using under-determined systems. in Proceedings - IEEE-EMBS International Conference on Biomedical and Health Informatics: Global Grand Challenge of Health Informatics, BHI 2012., 6211672, pp. 671-674, IEEE-EMBS International Conference on Biomedical and Health Informatics, BHI 2012. In Conj. with the 8th Int. Symp.on Medical Devices and Biosensors and the 7th Int. Symp. on Biomedical and Health Engineering, Hong Kong and Shenzhen, China, 2/1/12. https://doi.org/10.1109/BHI.2012.6211672
Feng S, Ji J. Fast pulse design for parallel transmission in MRI using under-determined systems. In Proceedings - IEEE-EMBS International Conference on Biomedical and Health Informatics: Global Grand Challenge of Health Informatics, BHI 2012. 2012. p. 671-674. 6211672 https://doi.org/10.1109/BHI.2012.6211672
Feng, Shuo ; Ji, Jim. / Fast pulse design for parallel transmission in MRI using under-determined systems. Proceedings - IEEE-EMBS International Conference on Biomedical and Health Informatics: Global Grand Challenge of Health Informatics, BHI 2012. 2012. pp. 671-674
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