Imaging system using independently controllable detectors

• US 9,029,791 B1
• Filed: 12/20/2013
• Issued: 05/12/2015
• Est. Priority Date: 12/20/2013
• Status: Active Grant

• Current Assignee: General Electric Company
• Original Assignee: General Electric Company
• Inventors: Kovalski, Gil, Bouhnik, Jean-Paul, Sachs, Jonathan, Grobshtein, Yariv, Zingerman, Yulim, Hefetz, Yaron, Eshco, Arie
• Primary Examiner(s): Kim, Kiho
• Application Number:
  US14/135,751
• Time in Patent Office: 508 Days
• Field of Search: 250/362
• US Class Current: 250/369
• CPC Class Codes: A61B 6/037 Emission tomography
• CPC Class Codes: A61B 6/4258 for detecting non x-ray radiation, e.g. gamma radiation A61B6/037 takes precedence
• CPC Class Codes: A61B 6/4266 characterised by using a plurality of detector units A61B6/4014 takes precedence
• CPC Class Codes: A61B 6/503 for diagnosis of the heart
• CPC Class Codes: A61B 6/545 involving automatic set-up of acquisition parameters
• CPC Class Codes: A61B 6/547 involving tracking of position of the device or parts of the device
• CPC Class Codes: G01T 1/161 Applications in the field of nuclear medicine, e.g. in vivo counting apparatus for radiation diagnosis A61B6/00
• CPC Class Codes: G01T 1/1648 Ancillary equipment for scintillation cameras, e.g. reference markers, devices for removing motion artifacts, calibration devices adapted for flow studies G01T1/1647
• CPC Class Codes: G01T 1/166 involving relative movement between detector and subject scanners in general without using scintigraphy G01T1/2964
• CPC Class Codes: G01T 1/2985 In depth localisation, e.g. using positron emitters; Tomographic imaging (longitudinal and transverse section imaging; apparatus for radiation diagnosis sequentially in different planes, steroscopic radiation diagnosis); using external radiation sources A61B6/02
• CPC Class Codes: G06T 11/005 Specific pre-processing for tomographic reconstruction, e.g. calibration, source positioning, rebinning, scatter correction, retrospective gating

Abstract

A customizable and upgradable imaging system is provided. Imaging detector columns are installed in a gantry to receive imaging information about a subject. Imaging detector columns can extend and retract radially as well as be rotated orbitally around the gantry. The gantry can be partially populated with detector columns and the detector columns can be partially populated with detector elements. The system can automatically adjust an imaging operation based on installation information related to partial population or other factors such as scan type or subject specific information. This system can be a Nuclear Medicine (NM) imaging system to acquire Single Photon Emission Computed Tomography (SPECT) image information.

Claims

1. An adaptive imaging system comprising:

a gantry;

a plurality of imaging detector units installed in the gantry, at least one of the plurality of detector units movable relative to the gantry to position at least one of the detector units with respect to a subject;

a controller configured to control the independent position of at least one detector unit; and

wherein the controller adaptively alters at least one detector unit position for an imaging operation upon receiving installation information.

2. The imaging system of claim 1, further comprising:

empty receiver locations in the gantry adapted to receive additional detector units.

3. The imaging system of claim 1, wherein:

at least some of the plurality of detector units are configured to acquire Single Photon Emission Computed Tomography (SPECT) data.

4. The imaging system of claim 1, wherein:

the detector units include gamma ray detection materials.

5. The imaging system of claim 1, wherein:

at least one detector unit comprises a rotatable detector head comprising detector elements; and

the controller is further configured to, based on receiving the installation information, adaptively adjust a detector head angle.

6. The imaging system of claim 5, wherein:

each detector head further comprises a sweep motor to generate a rotation angle change of the detector head based on instructions from the controller; and

the installation information includes information related to the current operation status of the sweep motor.

7. The imaging system of claim 1, wherein:

the installation information is a detector unit attachment status.

8. The imaging system of claim 7, wherein:

the detector unit attachment status includes information on receiver locations in the gantry where detector units are installed and on receiver locations in the gantry where detector units are not installed.

9. The imaging system of claim 1, wherein:

the detector units comprise a plurality of detector elements; and

the installation information is a detector element configuration status.

10. The imaging system of claim 9, wherein:

the detector element configuration status includes information related to locations in a detector unit where detector elements are installed and where detector elements could be installed but are not installed.

11. The imaging system of claim 9, wherein:

the detector element configuration status includes information related to whether the detector elements include slide-type detector elements.

12. The imaging system of claim 9, wherein:

the detector element configuration status includes information related to scintillator materials or semiconductor materials embedded in the detector elements used to acquire gamma rays during an imaging operation.

13. The imaging system of claim 9, wherein:

the detector element configuration status relates to a collimator type.

14. The imaging system of claim 1, wherein:

at least one of the plurality of detector units includes a radial motion arm and radial motion motor; and

the installation information includes information related to the current operation status of the radial motion motor.

15. The imaging system of claim 1, further comprising:

a user input related to an imaging operation to be performed; and

wherein the controller calculates a total imaging operation time prediction based on the installation information.

16. The imaging system of claim 15, wherein:

the controller compares the calculated operation time prediction with a threshold value related to the imaging operation type and outputs a recommendation to change installation information if the threshold has been reached.

17. The imaging system of claim 1, wherein:

at least one detector unit position is altered by moving the detector unit in an orbiting motion around the gantry to give the detector unit a new radial axis respective to the subject.

18. The imaging system of claim 1, wherein:

the controller alters at least one detector unit position for an imaging operation upon additionally receiving scan type information or patient medical information.

19. The imaging system of claim 1, wherein the controller is further configured to:

develop an image acquisition scenario based the installation information and a requested imaging operation;

configure a physical position of a least one detector unit installed in the gantry based on the developed image acquisition scenario; and

acquire image information from the detector units.

20. A non-transitory computer readable storage medium having stored thereon a computer program comprising instructions, which, when executed by a computer, cause the computer to:

determine installation information related to a plurality of imaging detector units attached to a gantry;

develop an image acquisition scenario based the installation information and a requested imaging operation;

configure a physical location of a least one detector unit attached to the gantry based on the developed image acquisition scenario; and

acquire image information from the detector units.

21. The computer readable storage medium of claim 20, wherein the computer, in the develop an image acquisition scenario execution:

chooses an image acquisition scenario based on a lowest calculated operation time, the operation time calculated by combining a time related to image acquisition with a time related to adjustment of the subject or adjustment of the detector units.

22. The computer readable storage medium of claim 21, wherein the instructions further cause the computer to:

compare the calculated operation time with a threshold value related to the imaging operation type or patient medical information; and

output a recommendation to change installation information if the threshold has been reached.

23. The computer readable storage medium of claim 20, wherein:

each detector unit comprises a plurality of detector elements, and the installation information relates to the configuration of the detector elements.

24. The computer readable storage medium of claim 20, wherein:

at least some of the plurality of detector units are configured to acquire Single Photon Emission Computed Tomography (SPECT) data.

25. The computer readable storage medium of claim 20, wherein the instructions further cause the computer to:

adapt an image reconstruction algorithm based on the image acquisition scenario;

reconstruct an image based on the adapted image reconstruction algorithm; and

display the reconstructed image.