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Use of Imaging to Assess Normal and Adaptive Muscle Function

RL Segal, PT, PhD, is Professor and Director, Division of Physical Therapy, Department of Allied Health Sciences; Faculty, Program in Human Movement Science; and Faculty, Curriculum in Neurobiology, University of North Carolina at Chapel Hill, CB 7135, Chapel Hill, NC 27599-7135 (USA).

Richard_Segal{at}med.unc.edu

Physical therapists must be able to determine the activity and passive properties of the musculoskeletal system in order to accurately plan and evaluate therapeutic measures. Discussed in this article are imaging methods that not only allow for the measurement of muscle activity but also allow for the measurement of cellular processes and passive mechanical properties noninvasively and in vivo. The techniques reviewed are T1- and T2-weighted magnetic resonance (MR) imaging, MR spectroscopy, cine–phase-contrast MR imaging, MR elastography, and ultrasonography. At present, many of these approaches are expensive and not readily available in physical therapy clinics but can be found at medical centers. However, there are ways of using these techniques to provide important knowledge about muscle function. This article proposes creative ways in which to use these techniques as evaluative tools.

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