Automated receptor tracking to diagnostic source assembly

• US 6,439,769 B1
• Filed: 03/16/2001
• Issued: 08/27/2002
• Est. Priority Date: 03/16/2001
• Status: Expired due to Term

• 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: Polkus, Vincent Stanley, Ni, Xianfeng, Boehm, Manfred David
• Primary Examiner(s): Porta, David P.
• Application Number:
  US09/681,315
• Publication Number:
  US 20020131558A1
• Time in Patent Office: 529 Days
• Field of Search: 378/167, 378/177, 378/187, 378/189, 378/193, 378/195, 378/196, 378/197, 378/198, 378/205
• US Class Current: 378/205
• CPC Class Codes: A61B 6/08 Auxiliary means for directing the radiation beam to a particular spot, e.g. using light beams
• CPC Class Codes: A61B 6/4233 using matrix detectors
• CPC Class Codes: A61B 6/4464 the source unit or the detector unit being mounted to ceiling
• CPC Class Codes: A61B 6/547 involving tracking of position of the device or parts of the device

Abstract

A system and method for automatically positioning an image receptor based on the position of a manually positioned diagnostic source assembly in an X-ray imaging device is provided. In a preferred embodiment of the automated tracking system, an operator manually positions a diagnostic source assembly (DSA) over the area of a patient to be imaged. Sensors in the diagnostic source assembly transmit the position of the DSA to a system controller. The system controller then calculates an optimal position of an image receptor based on the position of the DSA. Once the optimal position is calculated, the system controller sends the optimal position to a motor drive, which positions the image receptor in the calculated optimal position. Position sensors in the image receptor then send positional data of the image receptor to the system controller, which verifies that the image receptor is in the calculated optimal position. If the operator wishes to manually adjust the image receptor, they may override the motor drive and do so. The automated tracking system provides for reduced total imaging time and increased cost effectiveness over prior X-ray imaging systems by reducing the number of retakes required to obtain a satisfactory X-ray image. Reducing retakes also results in decreased exposure to radiation by the patient being imaged which is healthier to the patient.

Claims

1. A system for calculating an optimal position of an image receptor based on the position of a manually positioned diagnostic source assembly, said system including:

a system controller for receiving positional data from said diagnostic source assembly and calculating an optimal position for said image receptor based on said positional data received from said manually positioned diagnostic source assembly on a per-exposure basis.

2. The system of claim 1 wherein the optimal position for said image receptor is transmitted to a motor drive by said system controller.

3. The system of claim 1 wherein positional sensors on said diagnostic source assembly transmit said positional data from said diagnostic source assembly to said system controller.

4. The system of claim 1 wherein said image receptor includes positional sensors for transmitting positional data of said image receptor to said system controller.

5. The system of claim 1 wherein said system controller includes a microprocessor for calculating said optimal position.

6. A system for automatically positioning an image receptor in a medical imaging system, said system including:

a manually positioned diagnostic source assembly;

an automatically positioned image receptor;

a system controller for receiving positional data from said manually positioned diagnostic source assembly, calculating an optimal position for said automatically positioned image receptor with respect to the position of said manually positioned diagnostic source assembly and transmitting said optimal position to a motor drive; and

a motor drive for automatically positioning said image receptor in response to said optimal position.

7. The system of claim 6, wherein said system controller calculates said optimal position on a per-exposure basis.

8. The system of claim 6 wherein said manually positioned diagnostic source assembly includes at least one position sensor for transmitting the lateral orientation of said manually positioned diagnostic source assembly to said system controller.

9. The system of claim 6 wherein said manually positioned diagnostic source assembly includes at least one position sensor for transmitting the longitudinal orientation of said manually positioned diagnostic source assembly to said system controller.

10. The system of claim 6 wherein said manually positioned diagnostic source assembly includes at least one position sensor for transmitting the vertical orientation of said manually positioned diagnostic source assembly to said system controller.

11. The system of claim 6 wherein said manually positioned diagnostic source assembly includes at least one position sensor for transmitting the angular orientation of said manually positioned diagnostic source assembly to said system controller.

12. The system of claim 6 wherein said image receptor includes position sensors for transmitting the longitudinal position of said automatically positioned image receptor to said system controller.

13. The system of claim 6 wherein said image receptor includes position sensors for transmitting the height of said automatically positioned image receptor to said system controller.

14. The system of claim 6 wherein said image receptor includes position sensors for transmitting the axial tilt of said automatically positioned image receptor to said system controller.

15. A method for automatically positioning an image receptor, said method including the steps of:

calculating an optimal image receptor position based on the position of a manually positioned diagnostic source assembly; and

automatically positioning said image receptor based on said optimal image receptor position.

16. The method of claim 15 further including the step of verifying the position of said image receptor at said optimal image receptor position.

17. The method of claim 15 further including the step of manually overriding a motor drive to manually position said image receptor.

22. The method of claim 15, wherein said optimal image receptor position is calculated on a per-exposure basis.

18. A method for calculating an optimal position of an image receptor based on the position of a manually positioned diagnostic source assembly, said method including the steps of:

receiving positional data from said manually positioned diagnostic source assembly; and

calculating an optimal position of said image receptor based on the position of aid manually positioned diagnostic source assembly using a system controller per-exposure basis.

19. The method of claim 18 further including the step of transmitting said positional data from said diagnostic source assembly using positional sensors.

20. The method of claim 18 further including the step of transmitting said optimal position calculated by said system controller to a motor drive.

21. The method of claim 18 wherein said system controller includes a microprocessor.