Improvements in contactless wound area measurement using an app for mobile digital smart devices in veterinary medicine

The purpose of this study was to evaluate the metrological performances of a contactless digital planimetry app (imitoMeasure) for cutaneous wound area measurement. Precision, accuracy, agreement and reliability of six different combinations of smart devices (smartphone or tablet), calibration mode (manual mode or marker mode) and tracing mode (manual finger tracing or digital pencil tracing) were tested and compared with standard method on already known wound area shapes traced on transparent sheets. The imitoMeasure app showed excellent metrological characteristics in contactless wound area measurement. The use of the tablet with digital pencil tracing has proven to be a noteworthy improvement in the wound measurement process.