Archives of Physical Medicine and Rehabilitation
Volume 90, Issue 6 , Pages 1048-1054 , June 2009

Assessment of Gluteus Maximus Muscle Area With Different Image Analysis Programs

  • Gary A. Wu, MS

      Affiliations

    • Department of Biomedical Engineering, Case Western Reserve University, Cleveland, OH
    • Cleveland Functional Electrical Stimulation Center, Louis Stokes Cleveland Department of Veterans Affairs Medical Center, Cleveland, OH
    • ,
  • Kath Bogie, DPhil

      Affiliations

    • Department of Orthopaedics, Case Western Reserve University, Cleveland, OH
    • Cleveland Functional Electrical Stimulation Center, Louis Stokes Cleveland Department of Veterans Affairs Medical Center, Cleveland, OH
    • Corresponding Author InformationReprint requests to Kath Bogie, DPhil, Dept of Orthopaedics, Case Western Reserve University, 2109 Adelbert Rd, BRB 336, Cleveland, OH 44106

  • Image Result

    CT scan image locations used for assessments. (A), C1: between the second and third sacral notch; (B), C2: caudal head of the femur appears; (C), C3: greater trochanter is most prominent. NOTE. outlin

    CT scan image locations used for assessments. (A), C1: between the second and third sacral notch; (B), C2: caudal head of the femur appears; (C), C3: greater trochanter is most prominent. NOTE. outlined dotted area is the gluteus maximus. Inset square 6 × 6cm2 on top left used as reference for VeVMD measurements.

  • Image Result
    Histograms showing differences in repeated measurements to the mean measurement for each muscle using (A) ImageJ and (B) VeVMD. — — — R1, – – – – R2, ------ R3, —·—· R4.

    Histograms showing differences in repeated measurements to the mean measurement for each muscle using (A) ImageJ and (B) VeVMD. — — — R1, – – – – R2, ------ R3, —·—· R4.

  • Image Result
    Bland-Altman analysis for each rater between image analysis programs. The analysis compares the difference in measurement to the mean measurement. Y describes the trendline for each rater. Dotted line

    Bland-Altman analysis for each rater between image analysis programs. The analysis compares the difference in measurement to the mean measurement. Y describes the trendline for each rater. Dotted lines signify 2 SDs 2*SD=6.51, 7.42, 5.73, 4.21, respectively. (A) •R1 (circle), (B) ■R2 (square), (C) ♦R3 (diamond), (D) ▲R4 (triangle).

  • Image Result
    Longitudinal study for 1 patient. (A) Main effects and (B) interaction plot for 4 raters and 2 different programs over a period of 24 months. •R1 (circle), ■R2 (square), ♦R3 (diamond), ▲R4 (triangle),

    Longitudinal study for 1 patient. (A) Main effects and (B) interaction plot for 4 raters and 2 different programs over a period of 24 months. •R1 (circle), ■R2 (square), ♦R3 (diamond), ▲R4 (triangle), ○Image J (empty circle), ☐VeVMD (empty square).

  • Image Result
    Interval plot of measurements using (A) ImageJ and (B) VeVMD. Interval bars represent 95% confidence interval for the mean. Measurements of gluteus maximus muscle at the slice where the caudal head of

    Interval plot of measurements using (A) ImageJ and (B) VeVMD. Interval bars represent 95% confidence interval for the mean. Measurements of gluteus maximus muscle at the slice where the caudal head of femur appears (C2) on the right side. Tables show significance of measurement differences between time points. Abbreviation: NS, not significant. *P<.05; **P<.01. •R1 (circle), ■R2 (square), ♦R3 (diamond), ▲R4 (triangle).

 Supported by the Veterans Administration Rehabilitation Research and Development Service (grant no. B4664).

 No commercial party having a direct financial interest in the results of the research supporting this article has or will confer a benefit on the authors or on any organization with which the authors are associated.

PII: S0003-9993(09)00141-5

doi: 10.1016/j.apmr.2008.12.009

Archives of Physical Medicine and Rehabilitation
Volume 90, Issue 6 , Pages 1048-1054 , June 2009

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