Fluke Biomedical 57-411 - Manual (Page 9)

General Information
Long Leg Filter Mounting Instructions-Ceiling Mount (Model 57-435)
1
1-5
Figure 1-5.
Shows placement of ceiling mount Long-Leg Filter
1.6 Tomography Trough Filters (Models 57-412 & 57-413)
The regular trough filter (57-412) is used for adult linear tomography. Use the small filter (57-413) for
linear motion tomography of pediatric patients.
Position the filter with the collimator at the midpoint of its motion path so that the collimator, the patient's
chest and the film are lined up vertically (See Figure 1-6). Place the gap in the filter's center over the
patient's mediastinum. The width of the gap permits alignment during the motion.
Depending on the FFD used, the small filter (57-413) may be appropriate even for adult patients. Then,
the 57-412 would be used only for occasional cases of cardiomegaly.
Figure 1-6.
Shows correct positioning of Tomography filters
Filter
Filter