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Use of standardized, quantitative digital photography in a multicenter Web-based study.

Molnar JA, Lew WK, Rapp DA, Gordon ES, Voignier D, Rushing S, Willner W - Eplasty (2009)

Bottom Line: Digital photography is a simple and cost-effective method for quantifying wound size when used in conjunction with digital planimetry (SigmaScan) and photo enhancement (Adobe Photoshop) programs.The accuracy of the SigmaScan program in calculating predetermined areas was within 4.7% (95% CI, 3.4%-5.9%).Images obtained by individuals denying experience in photography proved reliable and useful for clinical evaluation and quantification of wound area.

View Article: PubMed Central - PubMed

Affiliation: Department of Plastic and Reconstructive Surgery, Wake Forest University School of Medicine, Winston-Salem, NC, USA. jmolnar@wfubmc.edu

ABSTRACT

Objective: We developed a Web-based, blinded, prospective, randomized, multicenter trial, using standardized digital photography to clinically evaluate hand burn depth and accurately determine wound area with digital planimetry.

Methods: Photos in each center were taken with identical digital cameras with standardized settings on a custom backdrop developed at Wake Forest University containing a gray, white, black, and centimeter scale. The images were downloaded, transferred via the Web, and stored on servers at the principal investigator's home institution. Color adjustments to each photo were made using Adobe Photoshop 6.0 (Adobe, San Jose, Calif). In an initial pilot study, model hands marked with circles of known areas were used to determine the accuracy of the planimetry technique. Two-dimensional digital planimetry using SigmaScan Pro 5.0 (SPSS Science, Chicago, Ill) was used to calculate wound area from the digital images.

Results: Digital photography is a simple and cost-effective method for quantifying wound size when used in conjunction with digital planimetry (SigmaScan) and photo enhancement (Adobe Photoshop) programs. The accuracy of the SigmaScan program in calculating predetermined areas was within 4.7% (95% CI, 3.4%-5.9%). Dorsal hand burns of the initial 20 patients in a national study involving several centers were evaluated with this technique. Images obtained by individuals denying experience in photography proved reliable and useful for clinical evaluation and quantification of wound area.

Conclusion: Standardized digital photography may be used quantitatively in a Web-based, multicenter trial of burn care. This technique could be modified for other medical studies with visual endpoints.

No MeSH data available.


Related in: MedlinePlus

For validation of the technique, images were captured with the standardized                        background and digital camera in the manner to be used in the clinical                        study.
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Figure 2: For validation of the technique, images were captured with the standardized background and digital camera in the manner to be used in the clinical study.

Mentions: The dorsum of the hand was photographed over a reference backdrop developed by the Department of Plastic and Reconstructive Surgery in association with Medical Photography at Wake Forest University School of Medicine. The backdrop allows internal standardization for each photograph in both dimension and color. It is made of flexible posterboard, with gray, white, and black reference scales and marked with horizontal gradations 2 cm apart (Fig 2). The backdrops may be gas sterilized for use in the operating room or with acute open wounds.


Use of standardized, quantitative digital photography in a multicenter Web-based study.

Molnar JA, Lew WK, Rapp DA, Gordon ES, Voignier D, Rushing S, Willner W - Eplasty (2009)

For validation of the technique, images were captured with the standardized                        background and digital camera in the manner to be used in the clinical                        study.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC2627310&req=5

Figure 2: For validation of the technique, images were captured with the standardized background and digital camera in the manner to be used in the clinical study.
Mentions: The dorsum of the hand was photographed over a reference backdrop developed by the Department of Plastic and Reconstructive Surgery in association with Medical Photography at Wake Forest University School of Medicine. The backdrop allows internal standardization for each photograph in both dimension and color. It is made of flexible posterboard, with gray, white, and black reference scales and marked with horizontal gradations 2 cm apart (Fig 2). The backdrops may be gas sterilized for use in the operating room or with acute open wounds.

Bottom Line: Digital photography is a simple and cost-effective method for quantifying wound size when used in conjunction with digital planimetry (SigmaScan) and photo enhancement (Adobe Photoshop) programs.The accuracy of the SigmaScan program in calculating predetermined areas was within 4.7% (95% CI, 3.4%-5.9%).Images obtained by individuals denying experience in photography proved reliable and useful for clinical evaluation and quantification of wound area.

View Article: PubMed Central - PubMed

Affiliation: Department of Plastic and Reconstructive Surgery, Wake Forest University School of Medicine, Winston-Salem, NC, USA. jmolnar@wfubmc.edu

ABSTRACT

Objective: We developed a Web-based, blinded, prospective, randomized, multicenter trial, using standardized digital photography to clinically evaluate hand burn depth and accurately determine wound area with digital planimetry.

Methods: Photos in each center were taken with identical digital cameras with standardized settings on a custom backdrop developed at Wake Forest University containing a gray, white, black, and centimeter scale. The images were downloaded, transferred via the Web, and stored on servers at the principal investigator's home institution. Color adjustments to each photo were made using Adobe Photoshop 6.0 (Adobe, San Jose, Calif). In an initial pilot study, model hands marked with circles of known areas were used to determine the accuracy of the planimetry technique. Two-dimensional digital planimetry using SigmaScan Pro 5.0 (SPSS Science, Chicago, Ill) was used to calculate wound area from the digital images.

Results: Digital photography is a simple and cost-effective method for quantifying wound size when used in conjunction with digital planimetry (SigmaScan) and photo enhancement (Adobe Photoshop) programs. The accuracy of the SigmaScan program in calculating predetermined areas was within 4.7% (95% CI, 3.4%-5.9%). Dorsal hand burns of the initial 20 patients in a national study involving several centers were evaluated with this technique. Images obtained by individuals denying experience in photography proved reliable and useful for clinical evaluation and quantification of wound area.

Conclusion: Standardized digital photography may be used quantitatively in a Web-based, multicenter trial of burn care. This technique could be modified for other medical studies with visual endpoints.

No MeSH data available.


Related in: MedlinePlus