Imaging system using independently controllable detectors

• US 9,213,110 B2
• Filed: 02/03/2015
• Issued: 12/15/2015
• 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, Eshco, Arie, Hefetz, Yaron
• Primary Examiner(s): Kim, Kiho
• Application Number:
  US14/612,398
• Publication Number:
  US 20150177393A1
• Time in Patent Office: 315 Days
• US Class Current: 1/1
• 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 imaging system, comprising:

a gantry;

a plurality of receiver locations in the gantry, wherein at least one of the plurality of receiver locations has an image detector unit installed therein;

a processor configured to identify the position of the at least one detector unit and develop an optimal scanning scenario;

wherein if an additional image detector unit is installed in an empty receiver location, the system updates its installation information; and

the processor dynamically alters the optimal scanning scenario based on the updated installation information.

2. The imaging system of claim 1, wherein installation information comprises at least one of:

whether a detector unit is installed in specific receiver locations, whether a detector unit is operable, whether a detector unit has a sweep motor, whether a detector unit has a radial motion motor, what specific detector elements are populated in a detector unit, what materials populate specific detector elements in a detector unit, the range of extension motion of a detector unit, the range of orbital motion of a detector unit, the head sweep range of a detector unit, and the collimator structure in a detector unit.

3. The imaging system of claim 1, wherein:

at least one of the detector units is configured to acquire Single Photon Emission Computed Tomography (SPECT) data.

4. The imaging system of claim 1, wherein:

at least one of the detector units is configured to acquire Computed Tomography (CT) data.

5. The imaging system of claim 1, wherein:

the processor develops the optimal scanning scenario based additionally on subject scan information.

6. The imaging system of claim 5, wherein:

subject scan information comprises at least one of;

scan type, region of interest, patient position, and subject medical characteristics.

7. The imaging system of claim 1, wherein the processor follows the optimal scanning scenario to:

instruct the system to perform an imaging operation; and

output an image result to a display or image file.

8. An image detector head, comprising:

a first region of fully populated detector elements; and

at least one side region of movable detector elements, such that the movable detector elements slide across the head of the detector head during an imaging operation.

9. The image detector head of claim 8, further comprising:

a collimator across both the first region and the at least one side region.

10. The image detector head of claim 8, wherein:

the detector head is positioned such that the first region is closest to an imaging region of interest.

11. The image detector head of claim 8, wherein:

detector elements include gamma ray detection materials.

12. The image detector head of claim 8, wherein:

the detector elements are configured to acquire Single Photon Emission Computed Tomography (SPECT) data.

13. The image detector head of claim 8, wherein:

the detector elements in the first region are arranged in a grid.

14. The image detector head of claim 13, wherein:

the grid comprises 25 detector elements, arranged five by five.

15. The image detector head of claim 8, further comprising:

a sweep motor that controls the sliding motion of the movable detector elements.

16. An imaging method, comprising:

determining installation information related to a gantry and a plurality of detector units installed therein;

comparing the specific detector element setup in each detector unit from the determined installation information with subject scan information to determine an optimal image scan;

performing an imaging operation on a subject based on the optimal image scan.

17. The imaging method of claim 16, wherein:

subject scan information comprises at least one of;

scan type, region of interest, patient position, and subject medical characteristics.

18. The imaging method of claim 16, wherein:

a specific detector element setup for a detector unit comprises one of;

staggered setup, sliding setup, or narrow FOV setup.

19. The imaging method of claim 16, wherein:

at least one of the detector units is configured to acquire Single Photon Emission Computed Tomography (SPECT) data.

20. The imaging method of claim 16, wherein:

at least one of the detector units is configured to acquire Computed Tomography (CT) data.