We Research

Permanent URI for this community

http://dspace.welingkar.org:4000/handle/1/5

Browse

Browsing We Research by Author "Das, Anshuman"

Now showing 1 - 2 of 2
  • No Thumbnail Available
    Item
    A novel clip-on for smartphone dermoscopy in India
    (Healthcare Innovations and Point of Care Technologies (HI-POCT), 2017 IEEE, 2017-11-08) Sahoo, Aparajita; Wahi, Akshat; Patel, Sonali; Poojary, Shital; Jaiswal, Saurabh; Das, Anshuman
    Dermoscopy is the in vivo technique of skin surface microscopy which is frequently used in visual examination of the skin. With the rise in the usage of smartphones, many smartphone attachments have been developed that enable dermoscopy on a phone but these attachments are very expensive and are available only for high-end phones. We have developed a novel 3D printed clip-on that can convert any smartphone into a polarizing dermoscope at a price which is highly affordable than the existing devices and is universal in its design. After visual examination and comparing images taken by both the devices using Structural Similarity Index (SSIM), we found the images to be highly similar. This clip-on for smartphones is one of the first prototypes using techniques of 3D printing which can make dermoscopy affordable, especially in developing countries like India. There is an acute need for such devices by clinicians practicing in remote areas, where such clip-ons can help in improving the preliminary visual examination of a large number of patients.
  • No Thumbnail Available
    Item
    Smartphone-based fluorescence spectroscopy device aiding in preliminary skin screening
    (2018-02-13) Sahoo, Aparajita; Wahi, Akshat; Das, Anshuman
    Preliminary diagnosis of closely resembling skin conditions can be highly subjective for dermatologists. In ambiguous cases, it often leads to performing invasive procedures like biopsies. Different skin conditions, however, have varying concentrations of fluorophores (like collagen, NADH) and chromophores (like melanin, hemoglobin) which can alter their fluorescence spectra. We demonstrate a handheld, portable, smartphone-based spectrometer that leverages these alterations in skin autofluorescence spectra for rapid screening of skin conditions. This methodology involves excitation of affected skin areas with ultraviolet (UV-A) 385 nm light, capturing the generated fluorescence spectra and sending the data wirelessly to a companion mobile application for data storage, analysis and visualization. By collecting the fluorescence spectral signals from healthy and unhealthy skin conditions, we establish that the signals collected using this portable device can be used to develop a classification method to help in differentially diagnosing these conditions. It shows promise as a useful skin screening tool for both dermatologists and primary health care workers. This device can enable quick, non-invasive and a more objective preliminary examination. We envision the device to be especially useful in primary healthcare centers of developing countries where availability of dermatologists is limited.