2 filter positioning – Fluke Biomedical 57-440 User Manual
Page 9
Usage
Filter Positioning
2
2-3
2.2 Filter Positioning
This section contains a detailed description of filter
positioning. Please read it thoroughly before
continuing.
A. A. AP Foot 40" F.F.D. When performing a single-exposure AP radiograph of the foot, the thin
filtration portion of the filter should begin at the proximal end of the metatarsal bones. The thick
edge of the filter should extend beyond the terminal phalanges (see Figure 2-1).
B.
Technique should be increased in order to image the tarsal bones; the
attenuation of the filter will compensate for the exposure in order to prevent the terminal phalanges
from becoming overexposed. The entire foot ran be imaged with one exposure.
Figure 2-1. AP Filter Orientation
NOTE
Thick Edge of Filter
NOTE: Thin Edge of Filter
Over Metatarsal Area
Shows Area of Filter
Coverage