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Proceedings Paper

Automatic determination of the imaging plane in lumbar MRI
Author(s): Tsurumaki Masaki; Yongbum Lee; Du-Yih Tsai; Masaru Sekiya; Kiyoko Kazama
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Paper Abstract

In this paper we describe a method for assisting radiological technologists in their routine work to automatically determine the imaging plane in lumbar MRI. The method is first to recognize the spinal cord and the intervertebral disk (ID) from the lumbar vertebra 3-plane localizer image, and then the imaging plane is automatically determined according to the recognition results. To determine the imaging plane, the spinal cord and the ID are automatically recognized from the lumbar vertebra 3-plane localizer image with a series of image processing techniques. The proposed method consists of three major steps. First, after removing the air and fat regions from the 3-plane localizer image by use of histogram analysis, the rachis region is specified with Sobel edge detection filter. Second, the spinal cord and the ID were respectively extracted from the specified rachis region making use of global thresholding and the line detection filter. Finally, the imaging plane is determined by finding the straight line between the spinal cord and the ID with the Hough transform. Image data of 10 healthy volunteers were used for investigation. To validate the usefulness of our proposed method, manual determination of the imaging plane was also conducted by five experienced radiological technologists. Our experimental results showed that the concordance rate between the manual setting and automatic determination reached to 90%. Moreover, a remarkable reduction in execution time for imaging-plane determination was also achieved.

Paper Details

Date Published: 15 March 2006
PDF: 8 pages
Proc. SPIE 6144, Medical Imaging 2006: Image Processing, 61443X (15 March 2006); doi: 10.1117/12.652908
Show Author Affiliations
Tsurumaki Masaki, Nakajo Central Hospital (Japan)
Yongbum Lee, Niigata Univ. (Japan)
Du-Yih Tsai, Niigata Univ. (Japan)
Masaru Sekiya, Niigata Univ. (Japan)
Kiyoko Kazama, Nakajo Central Hospital (Japan)

Published in SPIE Proceedings Vol. 6144:
Medical Imaging 2006: Image Processing
Joseph M. Reinhardt; Josien P. W. Pluim, Editor(s)

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