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Computed tomographic colonography: Comparison of two workstations
Linköping University, Faculty of Health Sciences. Linköping University, Department of Medicine and Care, Medical Radiology.
Linköping University, Faculty of Health Sciences. Linköping University, Department of Medicine and Care, Medical Radiology. Östergötlands Läns Landsting, Centre for Medical Imaging, Department of Radiology UHL. Linköping University, Center for Medical Image Science and Visualization, CMIV.ORCID iD: 0000-0002-9446-6981
Linköping University, Faculty of Health Sciences. Linköping University, Department of Medicine and Care, Medical Radiology. Östergötlands Läns Landsting, Centre for Medical Imaging, Department of Radiology UHL.
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2005 (English)In: Acta Radiologica, ISSN 0284-1851, E-ISSN 1600-0455, Vol. 46, no 7, 671-678 p.Article in journal (Refereed) Published
Abstract [en]

Purpose: To compare two commercially available computed tomography (CT) colonography systems with respect to interobserver variability, the influence of level of expertise, and the gradual reduction of reviewing time for each system. Material and Methods: Two residents and two radiologists using Siemens CTAPP Colography software and Viatronix V3DColon software reviewed supine and prone CT acquisitions from 24 patients in a primary 3D endoluminal view. The observers graded each case with respect to technical quality and diagnostic value, assessed the presence of pathology, and indicated the time spent on the viewing. Results: Significant differences were found in technical quality ( P <0.001) and diagnostic value ( P <0.001) depending on which system was used, with higher scores for the Viatronix software. The agreement between specialists tended to be higher than that between residents (κ = 0.63 (0.30-0.95) vs. κ = 0.51 (0.21-0.81)), and the residents gave significantly ( P <0.001) higher scores of technical quality. However, the level of expertise had no significant impact on the assessments. We noted extensive variability in pathological lesions found by the different observers. The number of findings did not differ between workstations, but the viewers tended to report larger polyp sizes with the Viatronix software. The time needed for viewing decreased significantly from the first to the last examination viewed by each observer. Conclusion: Both the evaluated systems present trustworthy images of the human colon, but in a primary 3D setting the Viatronix software is favored owing to the userfriendly interface, higher experienced technical quality, and better diagnostic value. © 2005 Taylor & Francis.

Place, publisher, year, edition, pages
2005. Vol. 46, no 7, 671-678 p.
Keyword [en]
Abdomen/GI, computer applications, 3D, computer applications, virtual imaging, CT, spiral
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Medical and Health Sciences
Identifiers
URN: urn:nbn:se:liu:diva-30554DOI: 10.1080/02841850500223109Local ID: 16142OAI: oai:DiVA.org:liu-30554DiVA: diva2:251377
Available from: 2009-10-09 Created: 2009-10-09 Last updated: 2013-10-21

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Persson, AndersNorén, BengtMalcherek, PerAxelsson, MathiasJohansson, JamesSmedby, Örjan

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Persson, AndersNorén, BengtMalcherek, PerAxelsson, MathiasJohansson, JamesSmedby, Örjan
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Faculty of Health SciencesMedical RadiologyDepartment of Radiology UHLCenter for Medical Image Science and Visualization, CMIVDepartment of Medicine and Care
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