Image thickness selection for multislice imaging system

• US 6,404,841 B1
• Filed: 12/29/1999
• Issued: 06/11/2002
• Est. Priority Date: 12/30/1998
• Status: Expired due to Fees

• Current Assignee: GE Medical Systems Global Technology Company LLC (GE Healthcare Technologies, Inc.)
• Original Assignee: GE Medical Systems Global Technology Company LLC (GE Healthcare Technologies, Inc.)
• Inventors: Strong, Gary R., McDaniel, Holly A., Pforr, Carl, Ackelsberg, Sholom M., Guerra, Carlos F., Dhanwada, Chalapathy V., Ni, Xiangfeng, He, Hui David
• Primary Examiner(s): Porta, David P.
• Assistant Examiner(s): Hobden, Pamela R.
• Application Number:
  US09/473,676
• Time in Patent Office: 895 Days
• Field of Search: 378/4, 378/19, 378/12, 378/15
• US Class Current: 378/4
• CPC Class Codes: A61B 6/027 characterised by the use of a particular data acquisition trajectory, e.g. helical or spiral
• CPC Class Codes: A61B 6/032 Transmission computed tomography [CT]
• CPC Class Codes: A61B 6/4085 Cone-beams

Abstract

Scalable multislice systems which, in one embodiment, includes a scalable multislice detector, a scalable data acquisition system (SDAS), scalable scan management, control, and image reconstruction processes, and a user interface, are described. More specifically, the user interface is implemented in a host computer for defining the configuration of the imaging system. Particularly, after selection of each scan parameter, the user interface displays the available scan parameter values for the remaining parameters so that the scan objectives are met. More specifically, after selection of each scan parameter, the user interface updates the remaining scan parameters, including prospective and retrospective image thicknesses.

Claims

1. An imaging system comprising:

a detector comprising multiple detector cells extending along a z-axis and configured to collect multiple slices of data;

a scalable data acquisition system coupled to said detector and configured to convert signals received from said detector to digital form; and

a host computer comprising a user interface for enabling a user to select scan parameters, said user interface comprising selectable scan parameters of helical, cine, and axial scan for multiple slice scans and said scan parameters comprising prospective and retrospective slice thicknesses, wherein said prospective slice thicknesses are displayed in a first color and said retrospective slice thicknesses are displayed in a second color.

2. A system in accordance with claim 1 wherein said scan parameters for the helical scan comprises a pitch speed.

3. A system in accordance with claim 2 wherein said imaging system further comprises a table for supporting a patient, and wherein said scan parameters for the helical scan further comprises a table speed.

4. A system in accordance with claim 1 wherein user interface adjusts said collimator based on said selectable scan parameters for helical and axial scans.

5. A system in accordance with claim 1 wherein said detector comprises a plurality of modules.

6. A system in accordance with claim 5 wherein at least one of said modules comprises a scintillator array and a photodiode array, said scintillator array positioned over and optically coupled to said photodiode array.

7. A system in accordance with claim 6 wherein signals output by photodiodes of said photodiode array are selectively combinable based on at least one of a selected slice thickness and number of slices.

8. A computed tomography system comprising a host computer comprising a user interface, said host computer programmed to enable an operator to prescribe scan parameters for helical, cine, and axial scans, said scan parameters comprising at least data collection slice thickness and number of slices, wherein said scan parameters for the helical, axial and cine scans comprises prospective and retrospective slice thicknesses, wherein said prospective slice thicknesses are displayed in a first color and said retrospective slice thicknesses are displayed in a second color.

9. A system in accordance with claim 8 wherein said scan parameters for the helical scan comprises a pitch speed.

10. A system in accordance with claim 9 wherein said imaging system further comprises a table for supporting a patient, and wherein said scan parameters for the helical scan further comprises a table speed.

11. A system in accordance with claim 8 wherein said system further comprises a prepatient collimator coupled to said host computer, said prepatient collimator comprises a cam collimator comprising at least one adjustable cam, and wherein said host computer is further programmed to adjust said collimator based on said selectable scan parameters for helical and axial scans.

12. A method of enabling an operator to prescribe scan parameters for an imaging system, the imaging system including a host computer having a user interface, said method comprising the steps of:

allowing the operator to select a mode of operation;

displaying available scan parameters for the selected mode of operation; and

displaying prospective and retrospective image thicknesses available for the selected scan mode using a different color.

13. A method in accordance with claim 12 wherein the system further includes a prepatient collimator coupled to the host computer, the prepatient collimator includes a cam collimator having at least one adjustable cam, and wherein said method further comprises the step of adjusting the collimator based on the selected scan mode.

14. A method in accordance with claim 12 wherein allowing the operator to select a scan mode of operation comprises the step of selecting one of a helical mode, axial mode and a cine mode.

15. A method in accordance with claim 14 wherein allowing the operator to select a mode of operation further comprises the step of selecting scan parameters for each scan mode.

16. A method in accordance with claim 15 wherein the imaging system includes a movable table for supporting a patient, and wherein selecting scan parameters for the helical scan mode comprises the step of selecting a table speed.

17. A method in accordance with claim 16 wherein selecting scan parameters for the helical scan mode further comprises the step of selecting a pitch speed.