Fluke Biomedical 57-411 - Manual (Page 11)

General Information
Long-Leg Filter (Model 57-436)
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1.11 Long-Leg Filter (Model 57-436)
Where a conventional x-ray generator is used, such as in long-leg radiography taken with the patient
standing, the 57-436 filter can be used. It is mounted on a standard 57-426 Filter Holder. The thick part
of the filter is placed so as to attenuate the lowest portion of the x-ray beam, and the tapered edge of the
filter is cephalad, reaching to the level of the patient's lesser trochanter. The filter is placed correctly with
the aid of the collimator light. Because the taper refracts light, the filter produces a dark band on the
patient where the tapered portion affects the x-ray beam. This facilitates filter placement.
Thin edge of filter