PRS 500 B User Manual
5014-0-0002
PROTEC GmbH & Co. KG, In den Dorfwiesen 14, 71720 Oberstenfeld, Germany
18 from 42
4
Handling / Operation
4.1
Operation with the radiographic system
4.1.1
Operation at the X-ray table
4.1.1.1
Position of patients on the tabletop
•
Adjust the height of the tabletop so the patient can mount it easily
•
Placing patient on table top and leaving table top
o
Center the tabletop as much as possible (back/front).
o
The patient should take place in the middle of the tabletop and also leave at this
position.
4.1.1.2
Setting the X-ray unit to the mid of movable Bucky, Grid entity
•
Move the tube column to a position in between the limits of the traveling range of the table Bucky,
Press the button for auto tracking on the touch display (see user manual for PROGNOST B)
•
The tube moves to the defined height, the table moves to the defined height and the Bucky travels
to the position where center beam is aligned to Bucky center. The SID is also set to the standard
height and will not be changed.
•
Now if you move the tube column the Bucky follows the tube position, as long both are in the
limits of the Bucky travel, otherwise an error message appears on the TOUCH-PC: “Out of tracking
range”. If you move the tube back into the travel range the message disappears and the Bucky
follows again.
4.1.1.3
Inserting a cassette into the cassette tray
•
A film cassette may be placed into the cassette tray, when the X-ray tube assembly is positioned
(see item 4.1.1.2).
•
Pull out the cassette tray by its handle from the bucky unit until it hits the forward stop.
•
The cassette clamps center the cassette transversely within the cassette tray. Rotate its latch
counter clockwise to unlock it.
•
Open the cassette clamps far enough to insert a cassette of the desired size.
•
At table bucky insert the cassette, with its transverse centerline aligned with the notch in the
cassette clamps or by engaging the cassette positioner in the size of the cassette corresponding
detent (13 cm, 18 cm, 24 cm, 30 cm, 35 cm, 40 cm or 43 cm), push the cartridge to the cassette
positioner.
•
Push the cassette clamps against the cassette, and rotate the latch into the locked position.
•
Push the cassette tray fully into the bucky unit.
4.1.1.4
Adjusting the source to image-detector distance (SID)
•
Set the X-ray unit with a tape measure at the collimator or the display on the tube to the desired
source to image-detector distance (SID).
•
Manual mode:
You can adjust the SID by moving the tube column up or down by pressing the
corresponding button on the tube head (Detailed description, see user manual PROGNOST B).
•
Auto tracking mode:
The SID is fixed by the system. You can only move the table height. The tube
height will follow and the movement stops at the pre-defined SID.
4.1.1.5
Adjusting the light resp. X-ray field
•
Press the collimator light switch (button 9, figure collimator) to turn on the collimator light, and
view the opening of the collimator shutter in both axes relative to the cassette size scales.
•
Several SID scale (adjuster 1 and 7, figure collimator) are provided to indicate the correct settings of
the collimator adjustment controls for the collimator shutters for several cassette sizes so that the
light beam and the X-ray filed can be limited to the desired cassette size in both axes. Adjust
cassette size as required using the collimator adjustment controls. Reduce shutter openings to
objects size for better image quality.
