Multi-energy x-ray source
AssigneeVarian Medical Systems, Inc.
InventorsEdward J. Seppi, Gary Virshup
Life of this patent
Estimating the term…
Abstract
An apparatus for use in a radiation procedure includes a radiation filter having a first portion and a second portion, the first and the second portions forming a layer for filtering radiation impinging thereon, wherein the first portion is made from a first material having a first x-ray filtering characteristic, and the second portion is made from a second material having a second x-ray filtering characteristic. An apparatus for use in a radiation procedure includes a first target material, a second target material, and an accelerator for accelerating particles towards the first target material and the second target material to generate x-rays at a first energy level and a second energy level, respectively.
Claims41
An apparatus for use in a radiation procedure, comprising:
- a radiation filter having a first portion and a second portion, the first and the second portions forming a layer for filtering radiation impinging thereon, wherein the first portion is made from a first x-ray filtering material, and the second portion is made from a second x-ray filtering material;
- a structure having a cavity, the radiation filter in operative association with the structure;
- and
- a disk located within the cavity, the disk having a first target material and a second target material, wherein the first target material corresponds with the first x-ray filtering material of the radiation filter, and the second target material corresponds with the second x-ray filtering material of the radiation filter, the second x-ray filtering material being different from the first x-ray filtering material;
- wherein the disk having the first target material and the second target material is rotatable.
An apparatus for use in a radiation procedure, comprising:
- a radiation filter having a first portion and a second portion, the first and the second portions forming a layer for filtering radiation impinging thereon, wherein the first portion is made from a first x-ray filtering material, and the second portion is made from a second x-ray filtering material;
- a structure having a cavity, the radiation filter in operative association with the structure;
- and
- a disk located within the cavity, the disk having a first target material and a second target material, wherein the first target material corresponds with the first x-ray filtering material of the radiation filter, and the second target material corresponds with the second x-ray filtering material of the radiation filter, the second x-ray filtering material being different from the first x-ray filtering material;
- wherein the disk having the first target material and the second target material is rotatable;
- and
- wherein the first target material forms a ring configuration.
The apparatus of 32, wherein either or both of the first and second x-ray filtering materials comprise a material selected from the group consisting of aluminum, copper, and molybdenum.
An apparatus for use in a radiation procedure, comprising:
- a radiation filter having a first portion and a second portion, the first and the second portions forming a layer for filtering radiation impinging thereon, wherein the first portion is made from a first x-ray filtering material, and the second portion is made from a second x-ray filtering material;
- a structure having a cavity, the radiation filter in operative association with the structure;
- and
- a disk located within the cavity, the disk having a first target material and a second target material, wherein the first target material corresponds with the first x-ray filtering material of the radiation filter, and the second target material corresponds with the second x-ray filtering material of the radiation filter, the second x-ray filtering material being different from the first x-ray filtering material;
- wherein the disk having the first target material and the second target material is rotatable;
- and
- wherein the first target material and the second target material are positioned concentrically relative to each other.
An apparatus for use in a radiation procedure, comprising:
- a radiation filter having a first portion and a second portion, the first and the second portions forming a layer for filtering radiation impinging thereon, wherein the first portion is made from a first x-ray filtering material, and the second portion is made from a second x-ray filtering material;
- a structure having a cavity, the radiation filter in operative association with the structure;
- and
- a disk located within the cavity, the disk having a first target material and a second target material, wherein the first target material corresponds with the first x-ray filtering material of the radiation filter, and the second target material corresponds with the second x-ray filtering material of the radiation filter, the second x-ray filtering material being different from the first x-ray filtering material;
- wherein the disk having the first target material and the second target material is rotatable;
- and
- wherein the first target material has at least an arc or a partial circular shape.
Dependencies are inferred from the claim text.