Technical Manual: TM50567
Optica 30/40/50 series
Revision: 4.0
Date of release: 2019-01-23
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www.vareximaging.com
2.
Device description
Intended use
The device is intended to be used in medical diagnostic applications with restrictions to human
diagnostics. The device is intended to be used as accessory of an X-ray system in a professional
healthcare facility environment. The device is intended to restrict the dimensions of a diagnostic X-ray
field by limiting the primary X-ray beam. The limitations of use are specified in §2.7. The device is not
intended to be used in fluoroscopy applications; near active HF Surgical Equipment or in the RF
shielded room of a system for magnetic resonance imaging, where the intensity of Electromagnetic
Disturbances is high.
Use, other than above, is identified as abnormal use.
The intended user of the device is defined as the operator of an X-ray system. The operator shall be
qualified and/or trained to operate the X-ray system.
Description of the collimator
The collimator is an automatic, square-field, multi-leaf, X-ray collimator and is suitable for installation
on stationary X-ray equipment.
The collimator mounting plane is intended at 80 mm (3.14") from the focus of the X-ray tube.
The X-ray field is limited by 4 pairs of shutters which are covered with lead.
Two pairs of lead shutters are located near the focus of the X-ray beam; two pairs are located near the
exit window of the collimator. The latter shutters serve to accurately define the X-ray field edges.
The main electronic system consists of a single PCB (Collimator main board). This board provides the
motorized positioning of the shutters which are controlled by two stepper motors and positioned by the
intended users.
The X-ray field can be adjusted manually with the two knobs (
30/40 Series only
) on the collimator front
panel or remotely. The field size can be selected with SID and field dimension input, see the applicable
User Manual
.
