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KMID : 1147120120180010018
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Journal of the Korean Society of Imaging Informatics in Medicine
2012 Volume.18 No. 1 p.18 ~ p.26
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Acceptable Lossy Compression Rate of Brain MR Images for Long Term Stage in PACS
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Cha Soon-Joo
Hong Seong-Wan
Lee Byung-Hoon
Lee Ji-Young
Hwang Yoon-Joon
Kim Su-Young
Kim Yong-Hoon
Seo Jung-Wook
Kim You-Sung
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Abstract
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Purpose: To evaluate clinically acceptable long term storage compression rate of JPEG2000 of brainMR images.
Materials and Methods: 6 sequence images (ADC, DWI, FLAIR, T1, T1e, T2) from 7 cases wereselected, which had fine pathologic condition. All images were compressed with rate of 1:5, 1:10,1:20, 1:40 by JPEG2000 compression protocol. All of the paired images were scoring by a Neurologicradiologist.
Results: In groups of 1:5, all images had score 4 and over in two trials. In group of 1:10, 90.5% of imagesare over score 4. However in group of 1:20, and 1:40, the images had 27.4, 3.6.
Conclusion: 1:5 lossy compression images of JPEG 2000 are acceptable in diagnosis, however1:10 may be acceptable for long term storage of PACS.
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KEYWORD
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PACS, Digital imaging and communications in medicine (DICOM), Data compression
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