1. Remote Wound Monitoring of Chronic Ulcers Sonja A. Weber, Niall Watermann, Jacques Jossinet, J. Anthony Byrne, Jonquille Chantrey, Shabana Alam, Karen So, Jim Bush, Sharon O ’ Kane, and Eric T. McAdams IEEE TRANSACTIONS ON INFORMATION TECHNOLOGY IN BIOMEDICINE, VOL. 14, NO. 2, MARCH 2010 Presenter: 陳麒文

2. Outline Intro Current wound assessment Development of a new impedance-based wound-mapping system Clinical assessment of the technique Conclusion

3. Introduction Cost Cost equivalent to 4% of the total National Health Service Some measurement is required to communicated inform on necessary dressing changes improve the quality of care and give vital support and confidence to the patients and their families

4. Current wound assessment-1 tracing the wound on transparency film with a fine-tipped pen, and analyzing the traced area manually by “ counting squares, ” or digitally by means of a planimeter or digitizer taking a scaled photograph of the wound

5. Current wound assessment-2 Unfortunately, given the general awkwardness of the position of chronic wounds, it is generally not possible for the patient to perform the measurement him/herself dressing removal in itself can interfere with healing

6. Current wound assessment-3 noncontact photographic technique (planimetry) eliminates the increased risk of contamination or wound interference associated with direct-contact methods change in camera angle can change the calculated area by around 10% due to the curved nature of most of the body ’ s surfaces [M. Flanagan, “ Wound measurement: Can it help us to monitor progression in healing?, ” J. Wound Care, vol. 12, pp. 189 – 194, 2003]

7. Hardware overview of the wound- mapping system

8. (Left) Prototype ImpediMap device. (Right) Early electrode array.

9. Q&A