M1000/3000 Nova
Register 3
SPB7-230.033.11
Page 2 of 4
Siemens AG
Installation and Start-Up
Rev. 06
05.06
CS PS SP
Medical Solutions
19 - 2
Checking the radiation field limitation
Measuring procedure
19
1. Put film into the cassette (1/ Fig. 1). The film shall be centered in the cassette.
2. Insert the cassette into the object table (2/ Fig. 1).
3. Place the film bag (3/ Fig. 1) on the object table. The film bag must extend beyond
the chest wall edge by minimum 10 mm.
If no corresponding film bag is available, you can place two film cassettes side by
side on the object table.
4. Place a centering cross (4/ Fig. 1) on the film bag or cassettes.
5. Switch on the light field and mark the edges of the light field with four coins
(5/ Fig. 1).
6. Write down the values of the centering cross corresponding to the side edges and
the front edge of the object table.
7. Release exposure (Mo/Mo).
8. Develop exposed films.
Fig. 1 Checking the radiation field
M
A
M
0
0
1
3
5
1
2
3
4
5