52 Grid
MAMMOMAT Novation DR SPB7-250.841.01.04.02 Siemens AG
05.05 CS SD 24
Page 52 of 64
Medical Solutions
Tab. 2 Test 1 protocol
If grid lines are visible, check the following adjustments:
Eliminating grid lines
There are various adjustments for eliminating grid line problems:
• Adjusting the "wheel" that is mounted on the grid motor.
• Adjust the grid switch.
• Adjust the grid location.
• Adjust the grid speed.
Adjust the “wheel” that is mounted on the grid motor.
A wheel with slits which activate the grid switch (S1) is mounted on the left side of the grid
motor (M1).
1. Move the grid to the left end position.
2. Check if the slits are horizontal to the detector table (Fig. 28 / p. 52).
Fig. 28: Adjusting the grid motor wheel
3. Move the grid to the right end position.
4. Check if the slits are horizontal to the detector table (Fig. 28 / p. 52).
Exposure Exp. mode mAs PMMA/mm Tube
angle
Visible grid
lines (Y/N)
1 mAs 32 30 0°
2 mAs 56 40 0°
3 mAs 110 50 0°
4AEC “H” 400°
5AEC “H” 400°
6AEC “H” 400°
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