Centering and collimating
Depending on the format of the cassette or detector inside the bucky and the
body part to expose, collimation and centering of the X-ray field have to be
applied before exposure.
Centering
The bucky center position is automatically aligned to the position of the X-ray
tube stand.
The bucky provides center marks to check for correct alignment:
• a notch within the hand grip to open/close the bucky drawer.
• a notch in the sliders in the bucky.
To align the X-ray field, adjust the position of the X-ray tube.
The collimator light field contains center lines to check the alignment of the X-
ray field to the bucky.
The centering icon on the tube head display indicates the alignment of the X-
ray field to the bucky.
Table 25: Centering status on the radiographic table
X-ray tube is pointing towards table bucky.
X-ray tube stand and bucky are mechanically coupled.
X-ray tube arm is in center position of transversal axis.
Any of the above conditions is not true.
Table 26: Centering status on the radiographic wall stand
X-ray tube is pointing towards wall stand bucky.
X-ray tube arm is in mid position of transversal and vertical
axis.
DR 400 | Bucky | 173
3231E EN 20210708 1530
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