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EXTERNAL COVER IN A.B.S. PLASTIC.
Multilayer, square field X-ray collimator for stationary units.
The collimator enclosure is constructed of double
steel, lead-lined walls for maximum X-ray protection .
X-ray field size is limited by 6 pairs of shutters
four of which are lead-lined. Two pairs of shutters are positioned
near the focus, two near the entrance window and two near the exit
window of the X-ray beam from the collimator. The shutters are
controlled by two knobs located on the front panel. Besides the
minimum in-built filtration, three variable filters may be added
manually.
S PECIFICATIONS:
External adjustment of
mirror angulation.
Additional filtration:
0,1mm copper in addition to the 1mm Al. Support
0,2 mm copper in addition to the 1mm Al support.
1mm aluminium in addition to the 1 mm Al support
High luminosity provided by a quartz iodide lamp.
Timer limiting projection lamp exposure time to 30 seconds,
adjustable, thus extending lamp life and preventing overheating.
150 kVp radiation shielding.
Minimum inherent filtration 2mm aluminium equivalent. (0,3mm and 1mm
on request)
Continuous film coverage from 0 x 0 to 43 x 43 cm,
±1%
FFD, at 90cm FFD (SID).
Notes
When it comes to
radiation protection, the collimater plays
an important role:
It is used to narrow the radiation field to a size needed for the
examination at hand. For this it is equipped with sets of lead
plates providing either a round or a square-shaped radiation field.
These collimating plates are either motorized or
operated manually. In automatic mode, the image-receiver size is
detected, and the collimating plates are operated accordingly
Diagrams of collimator with (1) no light beam (2)
Light beam
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