Trying to do gain calibrations on a senograph essentials machine. Specifically, I am trying the stereo calibrations. The manual says to insert the stereo device, angulate the tube to +15°, remove the device, and then expose the flat field phantom. However, when I do this, I receive an error saying the collimator is not fully opened. This is true (it is about half-opened), but I think the system does not allow the collimator to fully open when it thinks stereo mode is present. Therefore, I cannot do the full field exposure that the calibration wants. I've tried tricking the system by restarting the gantry, or by inserting the mag stand simulator, but I was not able to open the blades.
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Greg Togtema
Senograph Essentials gain calibrations
February 25, 2018 11:10
Trying to do gain calibrations on a senograph essentials machine. Specifically, I am trying the stereo calibrations. The manual says to insert the stereo device, angulate the tube to +15°, remove the device, and then expose the flat field phantom. However, when I do this, I receive an error saying the collimator is not fully opened. This is true (it is about half-opened), but I think the system does not allow the collimator to fully open when it thinks stereo mode is present. Therefore, I cannot do the full field exposure that the calibration wants. I've tried tricking the system by restarting the gantry, or by inserting the mag stand simulator, but I was not able to open the blades.
Any idea how to open them? Thanks
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