Abstract
We proposed a new type of tactile sensor that is capable of determining the surface morphology of skin lesions. The sensor consists of a brass cylinder with an axial bore. Three peripheral bobbins were machined in the cylinder around which three coils have been wound. An iron core can easily move inside the bore. One of the coils acts as primary and the other two are secondary coils. Change in the position of the core due to surface peaks and valleys causes the induced voltage in the secondary coils to vary. This change in the voltage is a measure of core position and reveals the morphological features of the surface (surface profile). Experiments show that the proposed sensor is capable of discriminating between the models of two different types of skin lesions, namely, anetoderma and nodule, which resemble each other in visual inspection but behave differently when being touched. Thus, this sensor could be used as an assist device for diagnosis purposes in teledermatology systems.
Highlights
Telemedicine is the use of information and communications technology to provide health care services to individuals who are some distance from the health care provider [1]
The primary coil is excited by a sinusoidal voltage that generates a varying magnetic field which causes a voltage to be induced in each secondary coil
Lesion Model Preparation: To test the sensor's ability to distinguish between different skin lesions, artificial lesions have been prepared which their behavior is similar to the actual lesions
Summary
Telemedicine is the use of information and communications technology to provide health care services to individuals who are some distance from the health care provider [1]. In the 1990s, serious interest in this method of health-care delivery has emerged. This is mainly due to improvements in the available technology, accompanied by falling transmission costs [2]. Teledermatology is practiced in three different methods: store-and-forward (SAF), real-time (RT) or videoconferencing and combination of the two techniques. The SAF variant uses asynchronous data transfer technology (e.g., email) while RT teledermatology is based on synchronous data transfer technologies (e.g., videoconferencing software) [5]. With advent of the digital camera, store-and-forward systems with a history and digital image sent by email for an opinion, found to be accurate [6]
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