Determining the through-plane resolution of strain-encoded MRI

Ahmed S. Fahmy, Nael Fakhry Osman

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

Abstract

Strain Encoded Magnetic Resonance Elastography (SENC MRE) has been proposed for imaging elastic variation by obtaining images whose intensity directly: represents through-plane strain. It is useful for detecting tumors because tumors exhibit different elastic properties than the surrounding tissue. SENC MRE, however, assumes homogeneous tissue elasticity in the through-plane direction, an assumption that requires the acquisition of relatively thin image slices. This causes a reduction in the signal-to-noise-ratio (SNR) of the images and lengthens the scanning time when acquiring large volumes. In this paper, we evaluated imaging with thick slices (>10 mm) where the homogeneity assumption would fail in cases of small tumors that are thinner than the image slice. We propose enhancing the SENC MRE technique to detect thin tumors by modifying the image slice profile. Phantom experiments were performed to demonstrate the ability of the improved SENC MRE technique to detect the presence of thin tumors, as small as one quarter of the slice thickness.

Original languageEnglish (US)
Title of host publicationProceedings - International Symposium on Biomedical Imaging
PublisherIEEE Computer Society
Pages919-922
Number of pages4
Volume2002-January
ISBN (Print)078037584X
DOIs
StatePublished - 2002
EventIEEE International Symposium on Biomedical Imaging, ISBI 2002 - Washington, United States
Duration: Jul 7 2002Jul 10 2002

Other

OtherIEEE International Symposium on Biomedical Imaging, ISBI 2002
CountryUnited States
CityWashington
Period7/7/027/10/02

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Keywords

  • Elastography
  • Estimation
  • Magnetic resonance imaging
  • MRE
  • Strain
  • Strainencoding

ASJC Scopus subject areas

  • Biomedical Engineering
  • Radiology Nuclear Medicine and imaging

Cite this

Fahmy, A. S., & Osman, N. F. (2002). Determining the through-plane resolution of strain-encoded MRI. In Proceedings - International Symposium on Biomedical Imaging (Vol. 2002-January, pp. 919-922). [1029411] IEEE Computer Society. https://doi.org/10.1109/ISBI.2002.1029411