John E Lynch et al 2004 Physiol. Meas. 25 N1 doi:10.1088/0967-3334/25/1/N01
John E Lynch1, Joseph S Heyman1 and Alan R Hargens2
Show affiliationsAn ultrasonic device for the diagnosis of acute compartment syndrome is described and results on six human cadaveric legs are presented. The ultrasonic device uses a pulsed phase locked loop (PPLL) to measure sub-micrometer displacements of the fascia wall. These displacements occur as a result of volume expansion of the muscle compartment of the lower leg and are related to changes in intramuscular pressure (IMP). In the cadaveric tests, the PPLL detected changes in compartment diameter resulting from IMP changes of 1 mmHg and from infusions of 0.25 ml saline increments. Based on these results, the ultrasonic PPLL appears to have the potential to become a low-cost, portable and noninvasive alternative to current methods for diagnosing acute compartment syndrome.
43.80.Vj Acoustical medical instrumentation and measurement techniques
43.80.Qf Medical diagnosis with acoustics (in PACS, see also 87.63.D−)
Issue 1 (February 2004)
Received 21 July 2003, accepted for publication 28 November 2003
Published 19 December 2003
John E Lynch et al 2004 Physiol. Meas. 25 N1
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