Alignment system to overlay abdominal computer aided tomography and magnetic resonance anatomy with single photon emission tomography

• US 5,299,253 A
• Filed: 04/10/1992
• Issued: 03/29/1994
• Est. Priority Date: 04/10/1992
• Status: Expired due to Term

• Current Assignee: Interatom German, Perimmune Holdings Incorporated
• Original Assignee: Akzo Nobel N.V. (Nouryon BV)
• Inventors: Wessels, Barry W.
• Primary Examiner(s): Church, Craig E.
• Application Number:
  US07/866,060
• Time in Patent Office: 718 Days
• Field of Search: 378/162, 378/163, 378/164, 378/20
• US Class Current: 378/163
• CPC Class Codes: A61B 6/037 Emission tomography
• CPC Class Codes: A61B 6/12 Arrangements for detecting or locating foreign bodies
• CPC Class Codes: A61B 6/5235 combining images from the same or different ionising radiation imaging techniques, e.g. PET and CT
• CPC Class Codes: A61B 6/5247 combining images from an ionising-radiation diagnostic technique and a non-ionising radiation diagnostic technique, e.g. X-ray and ultrasound
• CPC Class Codes: A61B 6/584 determining position of components of the apparatus or device using images of the phantom
• CPC Class Codes: G01R 33/28 Details of apparatus provided for in groups G01R33/44 - G01R33/64
• CPC Class Codes: G06T 3/14 Transformations for image registration, e.g. adjusting or mapping for alignment of images

Abstract

The invention is a machine based alignment system for imaging with a contrasting marker (fiducial marker) attached to a support means for providing a set of markings which uniquely identify each cross-section of an imaged object in relation to other registered images.

The invention also provides a method for using the alignment system.

Claims

1. A method of registering SPECT images with CT or MR images, comprising the steps of:

(A) aligning and immobilizing a human torso to be imaged on a support means;

(B) uniquely marking a cross section of the imaged torso by placing at least a portion of said human torso proximate to a contrasting marker means encased in an inert material comprising the support means;

(C) imaging said human torso using two or more imaging techniques to produce at least two images of said human torso to be imaged; and

(D) registering said at least two images of said human torso to be imaged to produce a coherent image of said human torso to be imaged.

2. An alignment system for imaging, comprising:

(A) a support means for alignment and immobilization of a human torso to be imaged; and

(B) a contrasting marker means, encased in said support means for providing markings which uniquely mark a cross-section of an imaged human torso, the contrasting marker means being encased in an inert material encasement.

3. The alignment system set forth in claim 2 wherein said inert material encasement is selected from the group consisting of solid or foam organic polymer, wood, steel, and ceramic.

4. The alignment system set forth in claim 2, wherein said contrasting marker means is at least one contrasting tube.

5. The alignment system set forth in claim 4, wherein said tube has a pattern approximating the shape of a M.

6. The alignment system set forth in claim 4, wherein said contrasting marker means is at least one tube which can be filled with a contrasting agent.

7. The alignment system set forth in claim 4, wherein said tube has a circular cross-section.

8. The alignment system set forth in claim 4, wherein said tube has a pattern approximating the shape of a N.

9. The alignment system set forth in claim 4, wherein said tube has a pattern approximating the shape of a Z.

10. The alignment system set forth in claim 5, wherein said tube has a pattern approximating the shape of a W.

11. The alignment system set forth in claim 6, wherein said contrasting agent is an iodine based contrast agent.

12. The alignment system set forth in claim 6, wherein said contrasting agent is an iodine based contrast agent.

13. The alignment system set forth in claim 6, wherein said contrasting agent is MnCl₂.

14. The alignment system set forth in claim 6, wherein said contrasting agent is 99m-Tc.

15. The alignment system set forth in claim 6, wherein said contrasting agent is 111-In.

16. The alignment system set forth in claim 6, wherein said contrasting agent is 131-I.

17. The alignment system set forth in claim 6, wherein said contrasting agent is 123-I.