Universität zu Köln

Krug, K. B., Weber, C., Schwabe, H., Sinzig, N. -M., Wein, B., Mueller, D., Wegmann, K., Peters, S., Sendler, V., Ewen, K., Hellmich, M. and Maintz, D. (2014). Comparison of image quality using a X-ray stereotactical whole-body system and a direct flat-panel X-ray device in examinations of the pelvis and knee. Rofo-Fortschr. Gebiet Rontgenstrahlen Bildgeb. Verfahr., 186 (1). S. 67 - 77. STUTTGART: GEORG THIEME VERLAG KG. ISSN 1438-9010

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Abstract

Purpose: The novel biplanar X-ray unit EOS, EOS Imaging, allows to acquire simultaneously 2 perpendicular planes of full-length spine and limbs and to measure spatially correct angles based on the acquired image data sets. This is to be seen alongside with a low spatial resolution, high investment costs and high operating expenses. The use of the biplanar X-ray unit in morphology based scelettal radiography might improve the cost-benefit-relation. Thus, the purpose of this study was to compare image quality of the EOS-unit and the flat panel (FP)-technology as reference in a clinical setting. Materials and Methods: All 114 patients of the Orthopedic Hospital Dept., who had a biplanar full-length lower limb radiograph and a FP-examination of the pelvis and/or the knee with maximum time interval of 3 months without changes in the clinical and radiological findings were included in the study. All X-ray examinations had been carried out due to clinical indications. Secondary captures comparable to the FP-images were extracted from the electronic EOS-image data sets. 4 radiologists independently from each other compared the visualization of normal anatomical structures of the pseudonymous EOS- and FP-images in a randomized order. Results: In the overwiew of all readers and all sceletal regions image quality of the FP-images was considered being superior in a mean of 83 +/- 13 % standard deviation of the pair comparisons (minimum 48 %, maximum 100 %). Image quality of the EOS-images was assessed as being superior in 2 +/- 3 % of the cases (0 %, 10 %). Image quality of 0.8 +/- 3 % of the FP-images (0 %, 17 %) and 30 +/- 34 % (0 %, 100 %) of the EOS-images was estimated as diagnostically inadequate. 30 +/- 33 % of the pair comparisons (0 %, 100 %) showed a diagnostically inadequate image quality of the EOS-images and a diagnostically good image quality of the FP-images. Conclusion: Image quality of biplanar full-length lower limb X-ray examinations is not suitable to be used for the diagnostic assessment of the morphological bone structure using the currently available technological setting. Key points: biplanar full-length lower limb X-ray examinations plat-panel radiography image quality

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Krug, K. B. UNSPECIFIED UNSPECIFIED UNSPECIFIED Weber, C. UNSPECIFIED UNSPECIFIED UNSPECIFIED Schwabe, H. UNSPECIFIED UNSPECIFIED UNSPECIFIED Sinzig, N. -M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Wein, B. UNSPECIFIED UNSPECIFIED UNSPECIFIED Mueller, D. UNSPECIFIED UNSPECIFIED UNSPECIFIED Wegmann, K. UNSPECIFIED UNSPECIFIED UNSPECIFIED Peters, S. UNSPECIFIED UNSPECIFIED UNSPECIFIED Sendler, V. UNSPECIFIED UNSPECIFIED UNSPECIFIED Ewen, K. UNSPECIFIED UNSPECIFIED UNSPECIFIED Hellmich, M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Maintz, D. UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-451257
DOI:	10.1055/s-0033-1350441
Journal or Publication Title:	Rofo-Fortschr. Gebiet Rontgenstrahlen Bildgeb. Verfahr.
Volume:	186
Number:	1
Page Range:	S. 67 - 77
Date:	2014
Publisher:	GEORG THIEME VERLAG KG
Place of Publication:	STUTTGART
ISSN:	1438-9010
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language BIPLANAR-RADIOGRAPHS; DIGITAL MAMMOGRAPHY; EOS; POSITIONS; ACCURACY; PHANTOM; 3D Multiple languages Radiology, Nuclear Medicine & Medical Imaging Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/45125