Technique for automatic characterisation of an amputee's residual LIMB

H. Mulvana, M.F. Parker, S. Cochran, B. Spence, S. Solomonidis

Research output: Chapter in Book/Report/Conference proceedingConference contribution book


The work reported here is aimed at the development of a non-contact method to excite a focused, low-frequency acoustic radiation field in the residual limb of a lower-limb amputee. In conjunction with the estimated acoustic radiation force, resultant tissue displacement can be used to estimate elasticity and could aid the prosthetist during limb assessment and socket fabrication. In this work a piezoceramic focusing bowl has been used to create a two-element, confocal array driven at f ± δf/2. The nonlinear nature of tissue as a propagation medium supports the creation of a parametric array, and waves at the sum (2f) and difference (δf) frequencies are generated in the bowl's focal zone. Higher frequencies are attenuated strongly and the low frequency of interest remains as an excitation source. Low frequency excitation is essential to this application to simulate the tissue loading that will occur as a result of gait.
Original languageEnglish
Title of host publicationProceedings - IEEE Ultrasonics Symposium
Number of pages4
Publication statusPublished - 2006
EventIEEE Ultrasonics Symposium 2006 - Vancouver, Canada
Duration: 2 Oct 20066 Oct 2006


ConferenceIEEE Ultrasonics Symposium 2006


  • acoustic applications
  • biological techniques
  • patient diagnosis
  • frequency
  • prosthetics
  • ultrasonic imaging
  • ultrasonic variables measurement

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    Mulvana, H., Parker, M. F., Cochran, S., Spence, B., & Solomonidis, S. (2006). Technique for automatic characterisation of an amputee's residual LIMB. In Proceedings - IEEE Ultrasonics Symposium (pp. 2088-2091). IEEE.