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Light to Field Adjustment

Mar 30, 2021 | Tech Tips, Siemens

In this tip, Rick helps us determine how the X-ray and light field area are determined and how we can adjust on the Siemens collimator.

How do we get the light field to coincide with the X-ray field?

This adjustment is done at the collimator, specifically by modifying the mirror. Since the width and height of the X-ray field cannot be adjusted directly via the internal leaves, we turn the mirror to achieve alignment.

For an older-style collimator, there are two adjustment screws and one fixed screw:

  • The first screw adjusts the mirror in one direction.
  • The second screw adjusts the mirror in the other direction.
  • These screws manipulate the L-armature holding the mirror to bring the light and X-ray fields into alignment.

For a newer-style collimator, the adjustment screws have been relocated:

  • One screw is in the back corner.
  • The other screw is on the side.
  • The adjustment process remains the same.

For additional questions or further assistance, feel free to call us or visit DirectMedImaging.com. For more tips like this, visit our website and view our resources page.

You can learn more on the specifics of servicing X-ray systems like the Siemens Ysio through our training program. Train your way, whether in-person or through our Interactive Virtual Training Academy!

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