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Author, Editor(s)

Author(s):

Kim, Bohyoung
Lee, Kyoung Ho
Kim, Kil Joong
Mantiuk, Rafał
Kim, Hye-ri
Kim, Young Hoon

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Not MPG Author(s):

Kim, Bohyoung
Lee, Kyoung Ho
Kim, Kil Joong
Kim, Hye-ri
Kim, Young Hoon

BibTeX cite key*:

kim2007asaipi

Title

Title*:

Artifacts in Slab Average-Intensity-Projection Images Reformatted from JPEG 2000 Compressed Thin-Section Abdominal CT Data Sets

Journal

Journal Title*:

American Journal of Roentgenology

Journal's URL:

http://www.ajronline.org/

Download URL
for the article:

http://www.ajronline.org/cgi/content/abstract/190/6/W342

Language:

English

Publisher

Publisher's
Name:

American Roentgen Ray Society

Publisher's URL:


Publisher's
Address:


ISSN:


Vol, No, pp, Date

Volume*:

190

Number:


Publishing Date:

2008

Pages*:

W342-W350

Number of
VG Pages:

27

Page Start:


Page End:


Sequence Number:


DOI:

10.2214/AJR.07.3405

Note, Abstract, ©

Note:


(LaTeX) Abstract:

OBJECTIVE. The objective of our study was to assess the effects of compressing source thin-section abdominal CT images on final transverse average-intensity-projection (AIP) images.

MATERIALS AND METHODS. At reversible, 4:1, 6:1, 8:1, 10:1, and 15:1 Joint Photographic Experts Group (JPEG) 2000 compressions, we compared the artifacts in 20 matching compressed thin sections (0.67 mm), compressed thick sections (5 mm), and AIP images (5 mm) reformatted from the compressed thin sections. The artifacts were quantitatively measured with peak signal-to-noise ratio (PSNR) and a perceptual quality metric (High Dynamic Range Visual Difference Predictor [HDR-VDP]). By comparing the compressed and original images, three radiologists independently graded the artifacts as 0 (none, indistinguishable), 1 (barely perceptible), 2 (subtle), or 3 (significant). Friedman tests and exact tests for paired proportions were used.

RESULTS. At irreversible compressions, the artifacts tended to increase in the order of AIP, thick-section, and thin-section images in terms of PSNR (p < 0.0001), HDR-VDP (p < 0.0001), and the readers' grading (p < 0.01 at 6:1 or higher compressions). At 6:1 and 8:1, distinguishable pairs (grades 1-3) tended to increase in the order of AIP, thick-section, and thin-section images. Visually lossless threshold for the compression varied between images but decreased in the order of AIP, thick-section, and thin-section images (p < 0.0001).

CONCLUSION. Compression artifacts in thin sections are significantly attenuated in AIP images. On the premise that thin sections are typically reviewed using an AIP technique, it is justifiable to compress them to a compression level currently accepted for thick sections.

URL for the Abstract:

http://www.ajronline.org/cgi/content/abstract/190/6/W342

Categories,
Keywords:


HyperLinks / References / URLs:


Copyright Message:


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Access Level:

Public

Correlation

MPG Unit:

Max-Planck-Institut für Informatik



MPG Subunit:

Computer Graphics Group

Audience:

popular

Appearance:

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BibTeX Entry:

@ARTICLE{kim2007asaipi,
AUTHOR = {Kim, Bohyoung and Lee, Kyoung Ho and Kim, Kil Joong and Mantiuk, Rafał and Kim, Hye-ri and Kim, Young Hoon},
TITLE = {Artifacts in Slab Average-Intensity-Projection Images Reformatted from JPEG 2000 Compressed Thin-Section Abdominal CT Data Sets},
JOURNAL = {American Journal of Roentgenology},
PUBLISHER = {American Roentgen Ray Society},
YEAR = {2008},
VOLUME = {190},
PAGES = {W342--W350},
DOI = {10.2214/AJR.07.3405},
}


Entry last modified by Rafał Mantiuk, 03/03/2009
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Editor(s)
Rafał Mantiuk
Created
05/22/2008 05:39:57 PM
Revisions
2.
1.
0.

Editor(s)
Rafał Mantiuk
Ellen Fries
Rafał Mantiuk

Edit Dates
02/24/2009 05:21:05 PM
02/11/2009 10:05:42 AM
05/22/2008 05:39:57 PM

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