Dedicated apparatus and method for emission mammography

• US 5,252,830 A
• Filed: 01/22/1992
• Issued: 10/12/1993
• Est. Priority Date: 01/22/1992
• Status: Expired due to Term

• Current Assignee: Naviscan Inc. (Compania Mexicana de Radiologia CGR SA de CV)
• Original Assignee: Ansel M. Schwartz, Frederick Mako, Irving Weinberg
• Inventors: Weinberg, Irving
• Primary Examiner(s): Dzierzynski, Paul M.
• Assistant Examiner(s): HANIG, RICHARD E
• Application Number:
  US07/824,804
• Time in Patent Office: 629 Days
• Field of Search: 250/363.02, 250/363.04, 378/37
• US Class Current: 250/363.02
• CPC Class Codes: A61B 6/4258 for detecting non x-ray radiation, e.g. gamma radiation A61B6/037 takes precedence
• CPC Class Codes: A61B 6/502 for diagnosis of breast, i.e. mammography
• CPC Class Codes: G01T 1/161 Applications in the field of nuclear medicine, e.g. in vivo counting apparatus for radiation diagnosis A61B6/00

Abstract

The present invention is an apparatus for examining a body part. The apparatus comprises a device for providing an anatomical image of the body part, such as an x-ray and a device for providing a physiological image of the body part in an adjacent relationship with said means for providing an anatomic image such that the body part remains in the same position during and between anatomic and physiological imaging. Preferably, the body part is infiltrated with a radiotracer and the device for providing a physiological image includes a device for detecting emissions of the radiotracers from the body part. In an alternative embodiment, the apparatus for examining a body part has a device for immobilizing the body part and a device for providing a physiological image of the body part. The providing device is in an adjacent relationship with the immobilizing means. Preferably, the apparatus includes a device for providing an anatomical image of the body part and the device for producing a physiological image includes means for detecting emissions of a radiotracer from the body part. The present invention is also a method for examining a body part of a patient which has the first step of obtaining an anatomical image of the body part. Then, there is the step of obtaining a physiological image of the body part such that the body part remains in the same position during and between anatomical and physiological imaging.

Claims

1. An apparatus for examining a body part comprising:

means for immobilizing and compressing the body part;

means for providing an internal anatomical image of the body part; and

means for providing a physiological image of the body part in an adjacent relationship with said means for providing an internal anatomic image such that the body part remains in the same position during and between anatomic and radiotracer physiological imaging.

2. An apparatus as described in claim 1 wherein the body part is infiltrated with a radiotracer and the means for providing a physiological image includes means for detecting emissions of the radiotracers from the body part.

3. An apparatus as described in claim 2 wherein the radiotracer produces gamma rays, and the detecting device includes two detector modules, each of which has at least one array of gamma ray sensitive material in communication with a position detector.

4. An apparatus as described in claim 1 wherein the body part is infiltrated with a radiotracer that emits photons and the detecting means includes a photon detector module.

5. An apparatus as described in claim 3 wherein the means for providing an anatomical image includes an x-ray source and x-ray recording medium.

6. An apparatus as described in claim 4 wherein each detector module has shielding for reducing the undesirable emissions.

7. An apparatus as described in claim 6 wherein each detector module has a collimator.

8. An apparatus as described in claim 7 wherein each detector module is attached to a swing arm for allowing them to swing into and out of an operational position.

9. An apparatus as described in claim 8 including a gamma ray source to yield a transmission image of the body part.

10. An apparatus as described in claim 1 wherein the immobilizing means includes a table and a compression arm.

11. An apparatus for examining a body part comprising:

means for immobilizing and compressing the body part; and

means for providing a radiotracer physiological image of the body part, said providing means in an adjacent relationship with said immobilizing and compressing means.

12. An apparatus as described in claim 11 including means for providing an anatomical image of the breast.

13. An apparatus as described in claim 12 wherein the means for producing a physiological image includes means for detecting emissions of a radiotracer from the breast.

14. An apparatus as described in claim 13 wherein the means for providing an anatomical image includes an x-ray source and x-ray recording medium.

15. An apparatus as described in claim 14 wherein the immobilizing means includes a table and a compression arm.

16. A method for examining a body part of a patient comprising the steps of:

immobilizing the body part in a preferred position such that the body part is compressed; and

obtaining a radiotracer physiological image of the body part.

17. A method as described in claim 16 wherein before the immobilizing step, there is the step of injecting the patient with a radiotracer.

18. A method as described in claim 16 wherein after the immobilizing step, there is the step of obtaining an anatomical image of the breast.

19. A method as described in claim 18 wherein the step of obtaining an anatomical image of the breast includes the step of taking an x-ray of the body part.

20. A method as described in claim 16 wherein before the immobilizing step, there is the step of performing compression examination.

22. A method as described in claim 20 wherein before the immobilizing step, there is the step of injecting the patient with a radiotracer and the step of obtaining a physiological image includes the step of detecting emissions of the radiotracer from the body part.

23. A method as described in claim 22 wherein before the immobilizing step, there is the step of performing compression examination.

21. A method for examining a body part of a patient comprising the steps of:

immobilizing the body part in a preferred position such that the body part is compressed;

obtaining an internal anatomical image of the body part; and

obtaining a physiological image of the body part such that the body part remains in the same position during and between anatomical and radiotracer physiological imaging.

24. A method as described in claim 21 wherein before the step of obtaining an anatomical image, there is the step of performing a spot view breast compression examination.