Position adjustment device for flat panel detector, position adjustment method for flat panel detector, and radiotherapy apparatus
AssigneesToshiba Energy Systems & Solutions Corporation, Toshiba Plant Systems & Services Corporation
InventorsTakayuki Kobayashi, Hiromasa Itoh, Shigeru Kasai
Life of this patent
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Abstract
A position adjustment device for a flat panel detector comprising: a guide that is provided on a surface side of the flat panel detector and can be measured by an optical device; and a fixing member configured to fix the guide to one of a side of the flat panel detector of a position adjustment unit and a side of a support portion for supporting the flat panel detector, the position adjustment unit being provided between the flat panel detector and the support portion.
Claims11
A position adjustment device for a flat panel detector comprising:
- a guide that is provided on a surface side of the flat panel detector and can be measured by an optical device;
- and
- a fixing member configured to fix the guide to one of a side of the flat panel detector of a position adjustment unit and a side of a support portion for supporting the flat panel detector, the position adjustment unit being provided between the flat panel detector and the support portion,
- wherein the position adjustment unit is configured to include a first member fixed to the flat panel detector, a second member fixed to the support portion, and an operation unit for adjusting a distance between the first member and the second member,
- the fixing member is configured to fix the guide to one of the first member and the second member, and
- the operation unit is configured to match a position corresponding to the isocenter with a position that is an image center of the flat panel detector, by adjusting the distance between the first member and the second member.
A position adjustment method for a flat panel detector comprising:
- providing a guide on a surface side of the flat panel detector, the guide being depicted in an X-ray image and being positionally measurable by an optical device;
- fixing the guide to one of a side of the flat panel detector of a position adjustment unit and a side of a support portion for supporting the flat panel detector, the position adjustment unit being provided between the flat panel detector and the support portion,
- specifying a first difference between a first position corresponding to an isocenter and a second position indicated by the guide by using the optical device;
- specifying a second difference between the second position and the third position, which is an image center of the flat panel detector, by using the X-ray image;
- specifying a third difference between the first position and the third position, depending on the first difference and the second difference;
- and
- operating the position adjustment unit according to the third difference in such a manner that the third position matches the first position.
Dependencies are inferred from the claim text.