Logical Images - VisualDx - Proven Results. A case study of VisualDx.

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VisualDx Dental

Smallpox Vaccination

Visual Knowledge
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Center for Future Health. University of Rocehster. Rochester, NY. Study Highlights

Objective
The objective of the study was to assess physician diagnostic accuracy when using a visual decision support tool in comparison to reference textbooks to solve four "unknown" cases.

Methodology
Four case presentations were obtained from the medical literature that were found to have pictures in the reference text, and were of sufficient difficulty to require a physician to seek reference in "solving" the case.

A mix of 50 emergency, internal medicine, family medicine and dermatologist physicians participated.

First, training was provided using a five-minute script to demonstrate the basic VisualDx software functionality. Each case synopsis was presented on a single uniform placard with images. The subject used either the textbooks or the VisualDx software for assistance, and then provided their 1st, 2nd, and 3rd diagnostic choices.

Conclusion
The comparison to text-based resources modeled clinical practice today, as physicians frequently reach for atlases or texts containing pictures to assist visual diagnostic evaluations. The resulting data significantly suggests advantages to using VisualDx over traditional text based resources.

	Generalist physicians and dermatologists participated in a randomized trial to assess diagnostic accuracy when using a visual decision support tool in comparison to reference textbooks. The study was conducted by the Center for Future Health at the University of Rochester and the results were published in a poster presented at the AMIA 2001 Annual Symposium. Specific conclusions: Correct diagnoses improved by 124% among the non-dermatologists The results were statistically significant Minimal training was required to effectively use the tool Physicians subjectively preferred VisualDx to textbooks View full report (369K)