Selection of a radiation shaping filter

Patent metadata

Field	Value
Publication number	US-9254109-B2
Application number	US-201314023626-A
Country	US
Kind code	B2
Filing date	Sep 11, 2013
Priority date	Oct 18, 2012
Publication date	Feb 9, 2016
Grant date	Feb 9, 2016

Abstract

A method for selecting a radiation shaping filter is disclosed, which modifies the spatial distribution of the intensity and/or the spectrum of x-rays of an x-ray source of an imaging system. In an embodiment, anatomical measurement data of an object under examination is recorded, from which with the aid of the imaging system image data is created. The radiation shaping filter is selected automatically on the basis of the recorded anatomical measurement data of the object under examination. An imaging system, in which a radiation shaping filter is selected, is further disclosed.

First claim

What is claimed is:

1. A method for selecting a radiation shaping filter arrangement, configured to modify a spatial distribution of at least one of intensity and spectrum of x-rays of an x-ray source of an imaging system, the method comprising:
recording anatomical measurement data of an object under examination; and
selecting the radiation shaping filter arrangement, automatically, based upon the anatomical measurement data of the object under examination, the radiation shaping filter arrangement including more than three individual radiation shaping filters arranged in a radiation shaping filter stack.

2. The method of claim 1 , wherein the selecting includes,
determining at least one anatomical parameter or parameter value of the object under examination, and
selecting the radiation shaping filter arrangement based on the at least one anatomical parameter or parameter value of the object under examination.

3. The method of claim 2 , wherein the selecting includes,
determining a plurality of anatomical parameters and a plurality of parameter values, and
selecting the radiation shaping filter arrangement based on the plurality of anatomical parameters and the plurality of parameter values.

4. The method of claim 2 , wherein the selecting select the radiation shaping filter arrangement is based upon at least one of a measurement of the object under examination and a measurement of a spatial location of an examination area.

5. The method of claim 1 , wherein the selecting selects the radiation shaping filter arrangement based upon at least one of a measurement of the object under examination and a measurement of a spatial location of an examination area.

6. The method of claim 1 , wherein the selecting selects the radiation shaping filter arrangement based on an expected attenuation of the x-rays by the object under examination.

7. The method of claim 6 , wherein selecting includes,
determining the expected attenuation of the x-rays automatically.

8. The method of claim 1 , wherein the recording includes,
recording an image of the object under examination.

9. The method of claim 8 , wherein the recording records an image of the object under examination with a camera, which creates the image on the basis of light in at least one of a visible wavelength range and an IR range.

10. The method of claim 8 , wherein the recording includes,
generating a topogram.

11. The method of claim 1 , further comprising:
bringing, automatically, the selected radiation shaping filter arrangement into a beam path of the x-ray source.

12. The method of claim 1 , further comprising:
controlling the spectrum of the x-ray source on the basis of the selected radiation shaping filter arrangement.

13. The method of claim 1 , wherein the method is used for a number of x-ray sources of the imaging system.

14. The method of claim 1 , further comprising:
controlling the imaging system based on the selected radiation shaping filter arrangement and a measurement protocol.

15. An x-ray imaging system, comprising:
an x-ray source;
a control device configured to record anatomical measurement data; and
a selection unit configured to automatically select a radiation shaping filter arrangement on the basis of the anatomical measurement data, the radiation shaping filter arrangement including more than three individual radiation shaping filters arranged in a radiation shaping filter stack.

16. The x-ray imaging system of claim 15 , wherein the radiation shaping filter arrangement further includes,
an activation unit configured to automatically bring the selected radiation shaping filter arrangement into a beam path of the x-ray source during operation.

17. The x-ray imaging system of claim 16 , wherein the control device is configured to, on the basis of the selected radiation shaping filter arrangement, control a spectrum of the x-ray source assigned to the radiation shaping filter arrangement.

18. The x-ray imaging system of claim 15 , wherein the control device is configured to, on the basis of the selected radiation shaping filter arrangement, control a spectrum of the x-ray source assigned to the radiation shaping filter arrangement.

19. The x-ray imaging system of claim 15 , wherein the control device is configured to record at least one of anatomical parameters and parameter values.

Assignees

• Siemens Ag
• Klinikum Der Uni Munchen

Inventors

• Becker Hans-Christoph
• Flohr Thomas
• Schmidt Bernhard

Classifications

• A61B6/542

  involving control of exposure · CPC title

• A61B6/0457

  Human Necessities · mapped topic

• A61B6/032

  Transmission computed tomography [CT] · CPC title

• A61B6/40

  Arrangements for generating radiation specially adapted for radiation diagnosis · CPC title

• A61B6/4435

  the source unit and the detector unit being coupled by a rigid structure · CPC title