Standardizing the MR image intensity scales: Making MR intensities have tissue specific meaning

L. Nyúl, Jayaram K. Udupa

Research output: Chapter in Book/Report/Conference proceedingChapter

11 Citations (Scopus)

Abstract

One of the major drawbacks of Magnetic Resonance Imaging (MRI) has been the lack of a standard and quantifiable interpretation of image intensities. Unlike in other modalities such as x-ray computerized tomography, MR images taken for the same patient on the same scanner at different times may appear different from each other due to a variety of scanner-dependent variations, and therefore, the absolute intensity values do not have a fixed meaning. We have devised a two-step method wherein all images (independent of patients and the specific brand of the MR scanner used) can be transformed in such a way that for the same protocol and body region, in the transformed images similar intensities will have similar tissue meaning. Standardized images can be displayed with fixed windows without the need of per case adjustment. More importantly, extraction of quantitative information about healthy organs or about abnormalities can be considerably simplified. This paper introduces and compares new variants of this standardizing method that can help to overcome some of the problems with the original method.

Original languageEnglish
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
PublisherSociety of Photo-Optical Instrumentation Engineers
Pages496-504
Number of pages9
Volume3976
Publication statusPublished - 2000
EventMedical Imaging 2000: Image Display and Visualization - San Diego, CA, USA
Duration: Feb 13 2000Feb 15 2000

Other

OtherMedical Imaging 2000: Image Display and Visualization
CitySan Diego, CA, USA
Period2/13/002/15/00

Fingerprint

Computerized tomography
Tissue
X rays
scanners
abnormalities
organs
magnetic resonance
tomography
adjusting
Magnetic Resonance Imaging
x rays

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics

Cite this

Nyúl, L., & Udupa, J. K. (2000). Standardizing the MR image intensity scales: Making MR intensities have tissue specific meaning. In Proceedings of SPIE - The International Society for Optical Engineering (Vol. 3976, pp. 496-504). Society of Photo-Optical Instrumentation Engineers.

Standardizing the MR image intensity scales : Making MR intensities have tissue specific meaning. / Nyúl, L.; Udupa, Jayaram K.

Proceedings of SPIE - The International Society for Optical Engineering. Vol. 3976 Society of Photo-Optical Instrumentation Engineers, 2000. p. 496-504.

Research output: Chapter in Book/Report/Conference proceedingChapter

Nyúl, L & Udupa, JK 2000, Standardizing the MR image intensity scales: Making MR intensities have tissue specific meaning. in Proceedings of SPIE - The International Society for Optical Engineering. vol. 3976, Society of Photo-Optical Instrumentation Engineers, pp. 496-504, Medical Imaging 2000: Image Display and Visualization, San Diego, CA, USA, 2/13/00.
Nyúl L, Udupa JK. Standardizing the MR image intensity scales: Making MR intensities have tissue specific meaning. In Proceedings of SPIE - The International Society for Optical Engineering. Vol. 3976. Society of Photo-Optical Instrumentation Engineers. 2000. p. 496-504
Nyúl, L. ; Udupa, Jayaram K. / Standardizing the MR image intensity scales : Making MR intensities have tissue specific meaning. Proceedings of SPIE - The International Society for Optical Engineering. Vol. 3976 Society of Photo-Optical Instrumentation Engineers, 2000. pp. 496-504
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