PORTAVISION MEDICAL
MACHINE VISION COLLIMATOR
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How it all works & why it is
revolutionary to the medical imaging industry.
MACHINE VISION COLLIMATOR (MVC)
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The mobile X-ray system and detector of the Virtual C System is comprised of products that are already available in the marketplace with the appropriate certifications required for use with class II medical devices.
FIGURE 1: The Machine Vision Collimator (MVC)
MAJOR COMPONENTS & HOW IT WORKS
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The Machine Vision Collimator (MVC) is comprised of the following components:
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Four independent motorized shutters
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Motorized rotating filter disc
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Lidar measuring device
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IMU for angulation
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Touch panel Display
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Video Camera
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Computer
The MVC system includes a computer, touchscreen display, four motorized shutters, a rotating filter disc, video camera, IMU for angulation, and Lidar for measuring x-ray source-to-patient distance. The shutters control both the size and position of the radiation beam, allowing precise alignment with the region of interest. The filter disc provides preset filters to reduce radiation based on patient size and region of interest. The display shows live videos of the patient and a virtual collimator area representing the size and location of x-ray beam. Users can further adjust the beam size and position using pinch, zoom, and pan gestures on the touchscreen. Once aligned, the system is ready to acquire fluoroscopic images using the selected protocol.
FIGURE 2: MVC Screen Interface
STEP-BY-STEP USAGE EXAMPLE
1.) For a typical procedure, the operator selects the “Fluoro” option on the touchpanel workstation display monitor, then selects an APR station for the patient size and anatomic region to be examined.
2.) Next, the operator places the detector under the patient and visually aligns the detector to the anatomic region to be examined.
3.) Then, the X-ray source is positioned over the patient, and visually aligned to the intended region by observing the live video image feed of the patient and the shaded virtual collimator area.
7.) At this point, manual manipulations of the beam size and location can be performed using the “pinch” and “swipe” touchpanel actions—“pinching” the touchpanel, as you would to zoom in or out on a smartphone, will define the shutter opening relative to the beam output size, while “swiping” will move
the shutter openings, adjusting the location of the beam itself while maintaining the desired shutter
opening.
8.) Now that the X-ray source is aligned, and the collimated area is adjusted for the anatomic region to the examined, the system is ready to acquire fluoroscopic images using the techniques associated with the selected protocol.