Region-of-interest MRI: K-space sampling conditions

Nitin Aggarwal, Yoram Bresler

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

Abstract

In several MR applications one is interested in reconstructing only a certain Region-of-Interest (ROI) of the Field-of-View (FOV) that is of anatomical or functional importance for the study. However, according to the Nyquist criterion, one is still forced to acquire Fourier (k-space) samples at a rate determined by the FOV instead of the ROI. In this paper we derive necessary and sufficient sampling conditions for recovering the ROI, for uniform and periodic non-uniform sampling, and obtain bounds on the minimal sampling density for arbitrary sampling patterns. We also extend the analysis to parallel MR imaging. The results can be applied to functional MRI, cardiac MRI, etc to reduce the total acquisition time or increase the spatial and temporal resolution, or SNR of the reconstructions.

Original languageEnglish (US)
Title of host publication2006 3rd IEEE International Symposium on Biomedical Imaging
Subtitle of host publicationFrom Nano to Macro - Proceedings
Pages41-44
Number of pages4
StatePublished - Nov 17 2006
Event2006 3rd IEEE International Symposium on Biomedical Imaging: From Nano to Macro - Arlington, VA, United States
Duration: Apr 6 2006Apr 9 2006

Publication series

Name2006 3rd IEEE International Symposium on Biomedical Imaging: From Nano to Macro - Proceedings
Volume2006

Other

Other2006 3rd IEEE International Symposium on Biomedical Imaging: From Nano to Macro
CountryUnited States
CityArlington, VA
Period4/6/064/9/06

ASJC Scopus subject areas

  • Engineering(all)

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  • Cite this

    Aggarwal, N., & Bresler, Y. (2006). Region-of-interest MRI: K-space sampling conditions. In 2006 3rd IEEE International Symposium on Biomedical Imaging: From Nano to Macro - Proceedings (pp. 41-44). [1624847] (2006 3rd IEEE International Symposium on Biomedical Imaging: From Nano to Macro - Proceedings; Vol. 2006).