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Correcting for possible tissue distortion between provocation and assessment in skin testing: The divergent beam UVB photo-test
St Thomas Hospital, England .
Linköping University, Department of Clinical and Experimental Medicine, Surgery. Linköping University, Faculty of Health Sciences.
Linköping University, Department of Medical and Health Sciences, Division of Community Medicine. Linköping University, Faculty of Health Sciences. Östergötlands Läns Landsting, Local Health Care Services in West Östergötland, Research & Development Unit in Local Health Care.
Linköping University, Department of Clinical and Experimental Medicine, Division of Inflammation Medicine. Linköping University, Faculty of Health Sciences. Östergötlands Läns Landsting, Heart and Medicine Center, Department of Dermatology and Venerology.
2013 (English)In: Skin research and technology, ISSN 0909-752X, E-ISSN 1600-0846, Vol. 19, no 4, 368-374 p.Article in journal (Refereed) Published
Abstract [en]

BackgroundIn tissue viability imaging (TiVi), an assessment method for skin erythema, correct orientation of skin position from provocation to assessment optimizes data interpretation. Image processing algorithms could compensate for the effects of skin translation, torsion and rotation realigning assessment images to the position of the skin at provocation. less thanbrgreater than less thanbrgreater thanMethodsA reference image of a divergent, UVB phototest was acquired, as well as test images at varying levels of translation, rotation and torsion. Using 12 skin markers, an algorithm was applied to restore the distorted test images to the reference image. less thanbrgreater than less thanbrgreater thanResultsThe algorithm corrected torsion and rotation up to approximately 35 degrees. The radius of the erythemal reaction and average value of the input image closely matched that of the reference images true value. less thanbrgreater than less thanbrgreater thanConclusionThe image de-warping procedure improves the robustness of the response image evaluation in a clinical research setting and opens the possibility of the correction of possibly flawed images performed away from the laboratory setting by the subject/patient themselves. This opportunity may increase the use of photo-testing and, by extension, other late response skin testing where the necessity of a return assessment visit is a disincentive to performance of the test.

Place, publisher, year, edition, pages
Wiley-Blackwell , 2013. Vol. 19, no 4, 368-374 p.
Keyword [en]
tissue viability imaging, TiVi, photo-test, spectroscopy, image correction
National Category
Medical and Health Sciences
Identifiers
URN: urn:nbn:se:liu:diva-100468DOI: 10.1111/srt.12055ISI: 000325547300002OAI: oai:DiVA.org:liu-100468DiVA: diva2:663001
Available from: 2013-11-08 Created: 2013-11-08 Last updated: 2017-12-06

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Henricson, JoakimFalk, MagnusAnderson, Chris

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SurgeryFaculty of Health SciencesDivision of Community MedicineResearch & Development Unit in Local Health CareDivision of Inflammation MedicineDepartment of Dermatology and Venerology
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