Lunar DPX-IQ, Руководство оператора

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4-6 Default Settings DPX-IQ Operator’s Manual
Figure 4-1. Lunar Standard Graph Display for AP Spine
WHO Fracture Risk is available for AP spine, Femur, and Total Body scan analysis.
Fracture Risk replaces the standard analysis graph with one designed to assess
fracture risk using World Health Organization categories. Refer to figure 4-2 below.
There are three different risk regions on the graph. BMD values in the green region (
❶
in figure 4-2) show a “normal” risk. Values in the yellow region (
❷
in figure 4-2) are
categorized as “osteopenia,” and values in the red region (
❸
in figure 4-2) are
categorized as “osteoporosis.” The footnote on the Results Report explains the T-
scores associated with each category. The T-score represents the patient’s BMD result
above or below a reference “Young Adult” mean; it is given in standard deviation
(SD) units.
There is no specific level of BMD where the risk of fracture increases; instead, there
is a continuous gradient of risk. BMD values should be considered together with other
risk factors in patient evaluation (low body weight, fracture history, corticosteroid
use, use of long-acting tranquilizers, a history of falling). In particular, patients with a
prior history of osteoporotic fracture should be considered to have double the risk of
future fracture at any density level.
Figure 4-2. WHO Fracture Risk Graph Display for AP Spine
❶
❷
❸