Teledermatopathology: a controlled study about diagnostic validity and technical requirements for digital transmission

Leinweber, Bernd, Massone, Cesare, Kodama, Kazuo, Kaddu, Steven, Cerroni, Lorenzo, Haas, Josef, Gabler, Gerald, Soyer, Hans Peter, Kerl, Helmut and Smolle, Josef (2006) Teledermatopathology: a controlled study about diagnostic validity and technical requirements for digital transmission. American Journal of Dermatopathology, 28 5: 413-416. doi:10.1097/01.dad.0000211523.95552.86


Author Leinweber, Bernd
Massone, Cesare
Kodama, Kazuo
Kaddu, Steven
Cerroni, Lorenzo
Haas, Josef
Gabler, Gerald
Soyer, Hans Peter
Kerl, Helmut
Smolle, Josef
Title Teledermatopathology: a controlled study about diagnostic validity and technical requirements for digital transmission
Journal name American Journal of Dermatopathology   Check publisher's open access policy
ISSN 0193-1091
Publication date 2006-10
Sub-type Article (original research)
DOI 10.1097/01.dad.0000211523.95552.86
Volume 28
Issue 5
Start page 413
End page 416
Total pages 4
Place of publication Hagerstown, MD
Publisher Lippincott-Raven
Language eng
Subject 110304 Dermatology
Abstract Telepathology is the practice of diagnostic histopathology performed on digital pictures. In this study, we focused on the technical requirements for achievement of a correct diagnosis on digital histopathologic images. A collection of 560 melanocytic lesions was selected from the files of the Department of Dermatology, Medical University of Graz, Austria. From each lesion one histologic slide was completely digitally scanned with a robotic microscope. Digital pictures were reviewed by 4 dermatopathologists using a presentation program, which recorded the number of image calls, applied magnifications, overall time needed, and amount of transmitted bits during the digital sign-out. One month later, the 4 microscopists had to review the corresponding slides and render a direct diagnosis on each case. Telepathologic diagnoses corresponded with the original diagnoses in a range from 90.4% to 96.4% of cases ([kappa] 0.80 to 0.93; P < 0.001). The median time needed for achievement of a diagnosis was 22 seconds and was significantly higher for melanomas compared with nevi. The median transmission effort for each diagnosis was 510 kilobytes after JPEG compression. Using an ISDN line with a transmission capacity of 64 kilobits/ second, this correlates to a transmission time of about 1 minute. Our results demonstrate that correct reporting on digital histopathologic images is possible with only a little time exposure. For an adequately fast transmission ISDN lines are suffcient after JPEG compression.
Keyword Teledermatopathology
Diagnostic accuracy
Data transmission rates
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Medicine Publications
 
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Created: Thu, 22 Jan 2009, 11:23:32 EST by Gina Velli on behalf of Faculty Of Health Sciences