Universität zu Köln

dos Santos, Daniel Pinto, Friese, Conrad, Borggrefe, Jan ORCID: 0000-0003-2908-7560, Mildenberger, Peter, Maehringer-Kunz, Aline and Kloeckner, Roman (2020). The impact of irreversible image data compression on post-processing algorithms in computed tomography. Diagn. Interv. Radiol., 26 (1). S. 22 - 28. SISLI: AVES. ISSN 1305-3612

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Abstract

PURPOSE We aimed to evaluate the influence of irreversible image compression at varying levels on image post-processing algorithms (3D volume rendering of angiographs, computer-assisted detection of lung nodules, segmentation and volumetry of liver lesions, and automated evaluation of functional cardiac imaging) in computed tomography (CT). METHODS Uncompressed CT image data (30 angiographs of the lower limbs, 38 lung exams, 20 liver exams and 30 cardiac exams) were anonymized and subsequently compressed using the JPEG2000 algorithm with compression ratios of 8:1, 10:1, and 15:1. Volume renderings of CT angiographies obtained from compressed and uncompressed data were compared using objective and subjective measures. Computer-assisted detection of lung nodules was performed on compressed and uncompressed image data and compared with respect to diagnostic performance. Segmentation and volumetry of liver lesions as well as measurement of ejection fraction on cardiac studies was performed on compressed and uncompressed datasets; differences in measurements were analyzed. RESULTS No differences could be detected for the 3D volume renderings and no statistically significant differences in performance were found for the computer-assisted detection algorithm. Measurements in volumetry of liver lesions and functional cardiac imaging showed good to excellent reliability. CONCLUSION Irreversible image compression within the limits proposed by the European Society of Radiology has no significant influence on commonly used image post-processing algorithms in CT.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code dos Santos, Daniel Pinto UNSPECIFIED UNSPECIFIED UNSPECIFIED Friese, Conrad UNSPECIFIED UNSPECIFIED UNSPECIFIED Borggrefe, Jan UNSPECIFIED orcid.org/0000-0003-2908-7560 UNSPECIFIED Mildenberger, Peter UNSPECIFIED UNSPECIFIED UNSPECIFIED Maehringer-Kunz, Aline UNSPECIFIED UNSPECIFIED UNSPECIFIED Kloeckner, Roman UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-352361
DOI:	10.5152/dir.2019.18245
Journal or Publication Title:	Diagn. Interv. Radiol.
Volume:	26
Number:	1
Page Range:	S. 22 - 28
Date:	2020
Publisher:	AVES
Place of Publication:	SISLI
ISSN:	1305-3612
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language CHEST CT IMAGES; DIFFERENCE; ARTIFACTS Multiple languages Radiology, Nuclear Medicine & Medical Imaging Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/35236