Radiography system and method of controlling radiography system thereof

Patent metadata

Field	Value
Publication number	US-10568601-B2
Application number	US-201816124691-A
Country	US
Kind code	B2
Filing date	Sep 7, 2018
Priority date	Sep 8, 2017
Publication date	Feb 25, 2020
Grant date	Feb 25, 2020

Abstract

A radiography system for imaging an object, comprises a radiation source located in a first side of the object for generating a plurality of beams; a detector located in a second side of the object for detecting the plurality of beams from the radiation source. The radiography system comprises a first sensor located in the first side of the object for obtaining an object related information and a second sensor disposed on the detector for obtaining a detector-position related information. The radiography system further comprises a controller configured to reconstruct a 3D scene based on the object related information obtained by the first sensor and the detector-position related information obtained by the second sensor and control an operation of at least one of the radiation source and the detector based on the reconstructed 3D scene. A method of controlling the radiography system is also disclosed.

First claim

What is claimed is:

1. A radiography system for imaging an object, comprising:
a radiation source located in a first side of the object, for generating a plurality of beams;
a detector located in a second side of the object, for detecting the plurality of beams from the radiation source;
a first sensor located in the first side of the object, for obtaining an object related information;
a second sensor disposed on the detector for obtaining a detector-position related information; and
a controller configured to reconstruct a 3D scene based on the object related information obtained by the first sensor and the detector-position related information obtained by the second sensor and control operation of at least one of the radiation source and the detector based on the reconstructed 3D scene.

2. The radiography system of claim 1 , wherein the operation of at least one of the radiation source and the detector comprises adjusting a position and/or a direction of at least one of the radiation source and the detector, and/or optimizing at least one of the exposure parameters of the radiation source.

3. The radiography system of claim 1 , wherein the controller is configured to obtain 3D scene information comprising at least one of an object 3D image information, an object positon related information, a detector-position related information, and a radiation source position related information based on the reconstructed 3D scene and control the operation of the radiation source and the detector based on the 3D scene information.

4. The radiography system of claim 1 , comprising a supporting device for supporting and articulating the radiation source, wherein the supporting device comprises a transport frame and a vertical column mounted on the transport frame, the radiation source is coupled to the vertical column, and the first sensor is mounted on the vertical column or on the radiation source.

5. The radiography system of claim 4 , comprising an indicator disposed on the radiation source or the supporting device to provide an indication to adjust a position and/or a direction of at least one of the radiation source, the detector and the object.

6. The radiography system of claim 1 , comprising a display device disposed on the radiation source to indicate a relative displacement of an object anatomical centering position relative to a field-of-view of the radiation source.

7. The radiography system of claim 1 , wherein the first sensor comprises at least one of a camera and a range finder.

8. The radiography system of claim 1 , wherein the second sensor comprises an inertial sensor for tracking a detector motion relative to the radiation source to determine a detector position.

9. The radiography system of claim 1 , comprising at least one marker placed on at least one of the object and an operator for identifying the object and the operator or determining the position of the object and/or the operator.

10. The radiography system of claim 9 , wherein the at least one marker is an electromagnetic coil.

11. The radiography system of claim 10 , wherein the at least one marker is placed on the object, and the second sensor comprises at least one electromagnetic sensor cooperating with the at least one marker to acquire a distance between the detector and the at least one marker, and a detector position is determined based on the distance and a relative position information between the at least one marker and the radiation source acquired by the first sensor.

12. The radiography system of claim 1 , wherein the second sensor is a proximity sensor to acquire a relative position information of the detector between a detector preliminary position at an edge of the object and a detector final position behind the object.

13. The radiography system of claim 12 , wherein a detector position is determined based on a detector preliminary position obtained by the first sensor and the relative positon information of the detector.

14. A method of controlling a radiography system comprising a radiation source and a detector for imaging an object, comprising:
obtaining an object related information by a first sensor located in a first side of the object;
obtaining a detector-position related information by a second sensor disposed on the detector; and
reconstructing a 3D scene based on the object related information obtained by the first sensor and the detector-position related information obtained by the second sensor and controlling an operation of at least one of the radiation source and the detector based on the reconstructed 3D scene.

15. The method of claim 14 , wherein the operation of the at least one of the radiation source and the detector comprising adjusting a position and/or a direction of at least one of the radiation source and the detector, and/or optimizing at least one of an exposure parameter of the radiation source.

16. The method of claim 14 , comprising obtaining 3D scene information comprising at least one of a detected object 3D image information, a detected object positon related information or the detector-position related information, and a radiation source position related information based on the reconstructed 3D scene, wherein the operation of the radiography system is controlled based on the 3D scene information.

17. The method of claim 14 , comprising providing an indication to adjust a position and/or a direction of at least one of the radiation source, or the detector or the detected object by an indicator.

18. The method of claim 14 , wherein the second sensor comprises an inertial sensor for tracking a detector motion relative to the radiation source, and the detector-position related information comprises a detector position information obtained by the inertial sensor.

19. The method of claim 14 , wherein the second sensor comprises an electromagnetic sensor, and the detector-position related information comprises a relative position information between the detector and a surface of the object obtained by the electromagnetic sensor.

20. The method of claim 14 , wherein the second sensor comprises a proximity sensor, and the detector-position related information comprises a relative position information of the detector between a detector preliminary position at an edge of the object and a detector final position behind the object obtained by the proximity sensor.

Assignees

• Gen Electric

Inventors

• Tkaczyk John Eric
• Pan Feng
• Gu Jiajun
• Zhai Zirong

Classifications

• A61B6/4405

  the apparatus being movable or portable, e.g. handheld or mounted on a trolley · CPC title

• A61B6/0407

  Supports, e.g. tables or beds, for the body or parts of the body · CPC title

• A61B6/542

  involving control of exposure · CPC title

• A61B6/5294 Primary

  involving using additional data, e.g. patient information, image labeling, acquisition parameters · CPC title

• A61B6/4283

  characterised by a detector unit being housed in a cassette · CPC title