System and method for equalizing pressure in ionization chamber of radiation device
AssigneeShanghai United Imaging Healthcare Co., Ltd.
InventorsJonathan Maltz, Johannes Stahl
Life of this patent
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Abstract
A system for equalizing a pressure in an ionization chamber of a radiation device is provided. The system may include the ionization chamber including: a chamber housing including one or more chamber walls; a chamber volume inside the chamber housing, the chamber volume being filled with a radiation sensitive material; and a pressure adjustment apparatus operably coupled to the chamber volume via at least one wall of the one or more chamber walls, the pressure adjustment apparatus being configured to equalize a first pressure of the radiation sensitive material inside the chamber volume and a second pressure of ambient air outside the chamber housing.
Claims18
An ionization chamber, comprising:
- a chamber housing including one or more chamber walls, wherein one of the one or more chamber walls has a thin thickness less than 2 millimeters to facilitate detection of radiation beams by lowering an amount of attenuation experienced by the radiation beams due to transition through the chamber wall;
- a chamber volume inside the chamber housing, the chamber volume being filled with a radiation sensitive material;
- and
- a pressure adjustment apparatus operably coupled to the chamber volume via at least one wall of the one or more chamber walls, the pressure adjustment apparatus being configured to equalize a first pressure of the radiation sensitive material inside the chamber volume and a second pressure of ambient air outside the chamber housing, the pressure adjustment apparatus including a tube and an enclosure configured to function as a reservoir of the radiation sensitive material, wherein
- the enclosure is connected to the chamber volume by the tube;
- and
- the enclosure is configured to prevent the chamber volume from being in fluid communication with ambient air and be nonpermeable for the radiation sensitive material and the ambient air.
A radiation system, comprising:
- an ionization chamber including a chamber housing, a chamber volume, and a pressure adjustment apparatus, wherein
- the chamber housing includes one or more chamber walls, wherein one of the one or more chamber walls has a thin thickness less than 2 millimeters to facilitate detection of radiation beams by lowering an amount of attenuation experienced by the radiation beams due to transition through the chamber wall;
- the chamber volume is inside the chamber housing, the chamber volume being filled with a radiation sensitive material;
- and
- the pressure adjustment apparatus is operably coupled to the chamber volume via at least one wall of the one or more chamber walls, the pressure adjustment apparatus is configured to equalize a first pressure of the radiation sensitive material inside the chamber volume and a second pressure of ambient air outside the chamber housing, the pressure adjustment apparatus including a tube and an enclosure configured to function as a reservoir of the radiation sensitive material, wherein
- the enclosure is connected to the chamber volume by the tube;
- and
- the enclosure is configured to prevent the chamber volume from being in fluid communication with ambient air and be nonpermeable for the radiation sensitive material and the ambient air.
Dependencies are inferred from the claim text.