Contrast optimization technique for multi-planar magnetic resonance images of the brain

Michael P Chwialkowski, Frank P. Leland, Robert W. Parkey, Ronald M Peshock

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

Abstract

A magnetic resonance (MR) image processing technique is presented which attempts to improve brain tissue contrast on sagittal views of the brain using the higher contrast definition of the same tissue from corresponding axial planes. The method uses median filtering in order to maximize the contrast-to-noise ratio in axial images, and subsequently transforms sagittal views using a simplified histogram matching algorithm suitable for real-time contrast correction using PC-based imaging workstations. The transformation has been tested on a number of multiplanar MR studies of the brain, yielding acceptable results for overall contrast enhancement in sagittal views. In the extreme case, and especially when the gray palette available for the display is relatively narrow, the expansion of the integer image data from a narrow range into a wider one causes a salt-and-pepper effect in the brain area. The intensity values of white and gray matter are forced apart, but they coalesce around discrete steps in intensity. As a result, upon these conditions the image appears noisier. A low-pass filter or median filter-based smoother can be applied to soften the effect at the expense of lower overall resolution in the image.

Original languageEnglish (US)
Title of host publicationProceedings of the Annual Conference on Engineering in Medicine and Biology
Place of PublicationPiscataway, NJ, United States
PublisherPubl by IEEE
Pages123-124
Number of pages2
Volume13
Editionpt 1
ISBN (Print)0780302168
StatePublished - 1991
EventProceedings of the 13th Annual International Conference of the IEEE Engineering in Medicine and Biology Society - Orlando, FL, USA
Duration: Oct 31 1991Nov 3 1991

Other

OtherProceedings of the 13th Annual International Conference of the IEEE Engineering in Medicine and Biology Society
CityOrlando, FL, USA
Period10/31/9111/3/91

Fingerprint

Magnetic resonance
Brain
Tissue
Median filters
Low pass filters
Image processing
Salts
Display devices
Imaging techniques

ASJC Scopus subject areas

  • Bioengineering

Cite this

Chwialkowski, M. P., Leland, F. P., Parkey, R. W., & Peshock, R. M. (1991). Contrast optimization technique for multi-planar magnetic resonance images of the brain. In Proceedings of the Annual Conference on Engineering in Medicine and Biology (pt 1 ed., Vol. 13, pp. 123-124). Piscataway, NJ, United States: Publ by IEEE.

Contrast optimization technique for multi-planar magnetic resonance images of the brain. / Chwialkowski, Michael P; Leland, Frank P.; Parkey, Robert W.; Peshock, Ronald M.

Proceedings of the Annual Conference on Engineering in Medicine and Biology. Vol. 13 pt 1. ed. Piscataway, NJ, United States : Publ by IEEE, 1991. p. 123-124.

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

Chwialkowski, MP, Leland, FP, Parkey, RW & Peshock, RM 1991, Contrast optimization technique for multi-planar magnetic resonance images of the brain. in Proceedings of the Annual Conference on Engineering in Medicine and Biology. pt 1 edn, vol. 13, Publ by IEEE, Piscataway, NJ, United States, pp. 123-124, Proceedings of the 13th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, Orlando, FL, USA, 10/31/91.
Chwialkowski MP, Leland FP, Parkey RW, Peshock RM. Contrast optimization technique for multi-planar magnetic resonance images of the brain. In Proceedings of the Annual Conference on Engineering in Medicine and Biology. pt 1 ed. Vol. 13. Piscataway, NJ, United States: Publ by IEEE. 1991. p. 123-124
Chwialkowski, Michael P ; Leland, Frank P. ; Parkey, Robert W. ; Peshock, Ronald M. / Contrast optimization technique for multi-planar magnetic resonance images of the brain. Proceedings of the Annual Conference on Engineering in Medicine and Biology. Vol. 13 pt 1. ed. Piscataway, NJ, United States : Publ by IEEE, 1991. pp. 123-124
@inproceedings{37c9bfc760e848e982c5ae29358a1b53,
title = "Contrast optimization technique for multi-planar magnetic resonance images of the brain",
abstract = "A magnetic resonance (MR) image processing technique is presented which attempts to improve brain tissue contrast on sagittal views of the brain using the higher contrast definition of the same tissue from corresponding axial planes. The method uses median filtering in order to maximize the contrast-to-noise ratio in axial images, and subsequently transforms sagittal views using a simplified histogram matching algorithm suitable for real-time contrast correction using PC-based imaging workstations. The transformation has been tested on a number of multiplanar MR studies of the brain, yielding acceptable results for overall contrast enhancement in sagittal views. In the extreme case, and especially when the gray palette available for the display is relatively narrow, the expansion of the integer image data from a narrow range into a wider one causes a salt-and-pepper effect in the brain area. The intensity values of white and gray matter are forced apart, but they coalesce around discrete steps in intensity. As a result, upon these conditions the image appears noisier. A low-pass filter or median filter-based smoother can be applied to soften the effect at the expense of lower overall resolution in the image.",
author = "Chwialkowski, {Michael P} and Leland, {Frank P.} and Parkey, {Robert W.} and Peshock, {Ronald M}",
year = "1991",
language = "English (US)",
isbn = "0780302168",
volume = "13",
pages = "123--124",
booktitle = "Proceedings of the Annual Conference on Engineering in Medicine and Biology",
publisher = "Publ by IEEE",
edition = "pt 1",

}

TY - GEN

T1 - Contrast optimization technique for multi-planar magnetic resonance images of the brain

AU - Chwialkowski, Michael P

AU - Leland, Frank P.

AU - Parkey, Robert W.

AU - Peshock, Ronald M

PY - 1991

Y1 - 1991

N2 - A magnetic resonance (MR) image processing technique is presented which attempts to improve brain tissue contrast on sagittal views of the brain using the higher contrast definition of the same tissue from corresponding axial planes. The method uses median filtering in order to maximize the contrast-to-noise ratio in axial images, and subsequently transforms sagittal views using a simplified histogram matching algorithm suitable for real-time contrast correction using PC-based imaging workstations. The transformation has been tested on a number of multiplanar MR studies of the brain, yielding acceptable results for overall contrast enhancement in sagittal views. In the extreme case, and especially when the gray palette available for the display is relatively narrow, the expansion of the integer image data from a narrow range into a wider one causes a salt-and-pepper effect in the brain area. The intensity values of white and gray matter are forced apart, but they coalesce around discrete steps in intensity. As a result, upon these conditions the image appears noisier. A low-pass filter or median filter-based smoother can be applied to soften the effect at the expense of lower overall resolution in the image.

AB - A magnetic resonance (MR) image processing technique is presented which attempts to improve brain tissue contrast on sagittal views of the brain using the higher contrast definition of the same tissue from corresponding axial planes. The method uses median filtering in order to maximize the contrast-to-noise ratio in axial images, and subsequently transforms sagittal views using a simplified histogram matching algorithm suitable for real-time contrast correction using PC-based imaging workstations. The transformation has been tested on a number of multiplanar MR studies of the brain, yielding acceptable results for overall contrast enhancement in sagittal views. In the extreme case, and especially when the gray palette available for the display is relatively narrow, the expansion of the integer image data from a narrow range into a wider one causes a salt-and-pepper effect in the brain area. The intensity values of white and gray matter are forced apart, but they coalesce around discrete steps in intensity. As a result, upon these conditions the image appears noisier. A low-pass filter or median filter-based smoother can be applied to soften the effect at the expense of lower overall resolution in the image.

UR - http://www.scopus.com/inward/record.url?scp=0026400754&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0026400754&partnerID=8YFLogxK

M3 - Conference contribution

AN - SCOPUS:0026400754

SN - 0780302168

VL - 13

SP - 123

EP - 124

BT - Proceedings of the Annual Conference on Engineering in Medicine and Biology

PB - Publ by IEEE

CY - Piscataway, NJ, United States

ER -