Comparison of the clinical informativeness of photographs and digital imaging media with multiple-choice receiver operating characteristic analysis

Perednia, D. A.

doi:10.1001/archderm.131.3.292

Cited by 32 publications

(25 citation statements)

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“…Perednia et al 18 clearly showed that an image resolution of 574ϫ489 pixels has the same informativeness as a slide, so that one could imagine that the use of different telemedicine equipment with better resolution would have had an impact on the agreement between the different evaluations ( values).…”

Section: Commentmentioning

confidence: 99%

Telemedical Wound Care Using a New Generation of Mobile Telephones

Braun

Vecchietti²,

Thomas³

et al. 2005

Arch Dermatol

106

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Background: Leg ulcers are an important cost factor in health care systems. It has been shown that a telemedical wound care consultation can improve quality of care and help reduce costs. In this study, we evaluated the feasibility of telemedical wound care using a new generation of mobile telephones with integrated cameras.Observations: Three physicians separately evaluated 61 leg ulcers for the following 9 variables: epithelialization, fibrin, necrosis, and granulation tissue at the center and normal border, erythema, cyanosis, eczema, and hyperpigmentation at the periphery. One physician performed the face-to-face consultation (gold standard), and 2 others performed the remote evaluation. The image was obtained with the mobile telephone and immediately sent via e-mail. To measure the agreement of the evaluation among the 3 physicians, we used Cohen statistics. Overall, the agreement between the remote and face-to-face evaluations was very good, with values of up to 0.94 The image quality was judged to be good in 36 cases (59%) and very good in 12 (20%). The participants felt comfortable making a diagnosis based on the pictures in 50 cases (82%). Conclusion:Although this study was performed with the first generation of these devices, we were able to demonstrate the feasibility of such a telemedical wound care consultation.

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Section: Commentmentioning

confidence: 99%

Telemedical Wound Care Using a New Generation of Mobile Telephones

Braun

Vecchietti²,

Thomas³

et al. 2005

Arch Dermatol

106

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“…There remain, however, a few questions. Is the quality of the picture good enough for consultation 15 ? Will this newtechnique really improve collaboration between specialists and GPs?…”

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confidence: 99%

A feasibility study of realtime teledermatology in Finland

Lamminen

et al. 2000

J Telemed Telecare

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We conducted a feasibility study of teleconsultation in dermatology using low-cost equipment. Patients and their general practitioners took part in consultations from the Primary Health Care Centre in Ikaalinen with a dermatologist 55 km away at the Tampere University Hospital (TAUH). Consultations were performed using standard commercial videoconferencing equipment, a modified document camera and a dermatoscope. A single ISDN line (128 kbit/s) was used for the connection. During the eight months of the study, 25 patients participated in a teledermatology consultation. Their mean age was 45 years (range 4-92). The average time the patient spent in travelling to the videoconsultation (i.e. one way) was 24 min (range 5-65 min). The mean time spent in the teleconsultation was 15 min (range 5-30 min). After the teleconsultation, patients' treatments changed in 19 cases (76%), diagnoses were changed in 13 cases (52%) and 18 patients (72%) did not need to go to the TAUH. The equipment was generally reliable and easy to use. However, the dermatoscope was not very useful and only one of the consultations relied mainly on it. The cost of the teleconsultations for the 18 patients who avoided travel to the TAUH was FM18,627. The total costs for the 18 conventional consultations in the TAUH would have been FM18,034. The main economic benefits of the videoconferencing were attributable to the reduced travelling and hospital costs. The economic benefits of medical education were more difficult to quantify.

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“…Although a comparative study has shown the 35-mm camera image is superior to the digital camera image, the accuracy of diagnosis of various skin disorders with digital images was equivalent to the diagnosis using the 35-mm-camera photograph. 8 , 9 The importance of digital image resolution for the accuracy and confidence of dermatologic diagnoses has been evaluated. In one study it was found that a 720 · 500-pixel image was equivalent to a 1490 · 1000-pixel image in terms of accuracy of diagnoses and confidence level of the dermatologist.…”

Section: Discussionmentioning

confidence: 99%