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  • 12677

    Member
    August 27, 2008 at 6:52 am

    put the ruler under one leg. don’t move the patient. get three images with the fluoro unit, the central ray over ankle, hip, knee.,the ruler over the joints.
    this eliminates beam divergence.  subtract the numbers to get the length of the femur and the length of the tibia.
    repeat for the other leg and report the difference in the length.