The XRV-100 and XRV-124 represent an important breakthrough in film-free
end-to-end testing of proton therapy and radiosurgery treatment systems.
Using a novel 3D scintillator cone and CCD camera, this exciting new technology from
Logos Systems can quickly capture radiation beams in real time,
dramatically improving the speed and accuracy of your current end-to-end QA test procedure.
Not only do these XRV systems measure field size, symmetry, penumbra,
output, timing and divergence in less than a second, they can also determine
within several tenths of a millimeter the 3D location and direction of the beam.
In the following animation, look for the green spots,
where the x-ray or proton beam enters and exits the yellow scintillator cone.
The green spots represent the visible light captured by the camera
and used to calculate the beam profile, position, direction and timing data.
Note how each different beam shot produces a unique set of entry and exit locations
that can be used to reconstruct the beam path.
The XRV-100 and 124 have embedded BB fiducials
for alignment of the phantom within the treatment reference frame.
Using a CT scan of the XRV phantom, precise positioning of the
QA dose ISO Center can be accomplished using the treatment planning system.
In the following recording of a real-time treatment, the x-ray imaging system used for patient
targeting is illuminating the fiducials in order to provide guidance for precise
positioning of the radiation beam within the volume of the phantom imaging cone.
The XRV records both the x-ray flashes and the entry exit spots of the radiation beams.
Once the QA treatment plan is captured by the XRV phantom, the
Logos Systems BeamWorks and Volume Works software applications can be used to
analyze the beam by beam targeting accuracy of the treatment delivery.
Proton beam positions corrected for gantry wobble can be quickly verified in
an all-electronic star shot test.
For more information on the XRV-100 and XRV-124,
please call Logos Systems at 831-600-6101
or visit www.LogosVisionSystem.com.