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Proceedings Paper

Reconstructing the CT number array from gray-level images and its application in PACS
Author(s): Xu Chen; Tian-ge Zhuang; Wei Wu
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Paper Abstract

Although DICOM compliant computed tomography has been prevailing in medical fields nowadays, there are some incompliant ones, from which we could hardly get the raw data and make an apropos interpretation due to the proprietary image format. Under such condition, one usually uses frame grabbers to capture CT images, the results of which could not be freely adjusted by radiologists as the original CT number array could. To alleviate the inflexibility, a new method is presented in this paper to reconstruct the array of CT number from several gray-level images acquired under different window settings. Its feasibility is investigated and a few tips are put forward to correct the errors caused respectively by 'Border Effect' and some hardware problems. The accuracy analysis proves it a good substitution for original CT number array acquisition. And this method has already been successfully used in our newly developing PACS and accepted by the radiologists in clinical use.

Paper Details

Date Published: 7 August 2001
PDF: 7 pages
Proc. SPIE 4323, Medical Imaging 2001: PACS and Integrated Medical Information Systems: Design and Evaluation, (7 August 2001); doi: 10.1117/12.435498
Show Author Affiliations
Xu Chen, Shanghai Jiaotong Univ. (China)
Tian-ge Zhuang, Shanghai Jiaotong Univ. (China)
Wei Wu, Shanghai Jiaotong Univ. (China)

Published in SPIE Proceedings Vol. 4323:
Medical Imaging 2001: PACS and Integrated Medical Information Systems: Design and Evaluation
Eliot L. Siegel; H. K. Huang, Editor(s)

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