A non Invasive low cost portable photographic application for limb volume calculations in lymphoedema

Lachlan McFetridge, OJ Pallotta, Neil Piller

    Research output: Contribution to conferenceAbstractpeer-review

    Abstract

    Background: Measuring and monitoring limb volume is an effective method for assessing the efficacy of treatments for lymphoedema. The ideal tool for limb volume measurement should be non-invasive, inexpensive and portable, while also providil1g accurate and repeatable results. Current methods, including fluid displacement, limb circt1mference measurement, perometry, computer tomography and laser scanning, do not meet all of these requirements.
    The technique proposed utilises automated computer aided imaging techniques (Photogrammetry) to calculate limb volumes and track the changes over time. Imaging through photography has the advantage of being non-invasive, low-cost, portable, highly accurate and repeatable. In addition, photography provides both the clinician and patient with a vist1al record of their treatment progression.
    Objectives: To demonstrate the benefits of limb volume measurement and limb volume changes based on photographic imaging techniques with the aim to produce an auton1ated, low-cost, portable, accurate and repeatable measurement tool for rural and remote areas.
    Methods: The volume of a range of artificial limbs as well as lymphoedema limbs will be measured with imaging techniques and compared to the results from the traditional measures, such as perometry, water displacement and circumference meast1rement.
    Results: The final results will be available at the meeting but the accuracy of photogrammetry seems dependent on several interrelated factors, the resolution of the camera, the size of the object of i11terest, the number of photographic images taken, and the geometric layout of the pictures relative to the limb. These isst1es are all manageable.
    Given a camera resolution of at least three mega-pixels, photogrammetry is capable of a measurement resolution of less than 1 mm. This is suitable for the measurement of the expected volume changes in Lymphoedema limbs between clinic visits. Conclusions: Photographic imaging can provide provide quantitative and qualitative indications which allow us to monitor volume and shape changes in ly1nphoede1na over time. The incorporation of this technique into a smart phone or a tablet could be easily implemented, creating a platform for an inexpensive, portable measurement system usable in rural and remote areas.
    Original languageEnglish
    Pages93
    Number of pages1
    Publication statusPublished - 19 Sep 2011
    Event23rd International Congress of Lymphology - Malmö, Sweden
    Duration: 19 Sep 201123 Sep 2011
    Conference number: XXIII

    Conference

    Conference23rd International Congress of Lymphology
    CountrySweden
    CityMalmö
    Period19/09/1123/09/11

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