Granted Patent B2

US 12,193,868 · App. 17/840,258 · Granted Jan 14, 2025

Inventors: Dee H. Wu (Edmond, OK); Elizabeth A. Jett (Edmond, OK); Natalie Stratemeier (Edmond, OK); Hong Liu (Norman, OK); Caroline J. Preskitt (Moore, OK); Weiyuan Wang (Edmond, OK); Min Yang (Oklahoma City, OK)

Assignee: The Board of Regents of the University of Oklahoma

A61B6/583A61B6/502

Abstract

Claims (30)

1. A radiographic phantom comprising:

a body comprising a wax material or a wax-like material, wherein the body has an x-ray attenuation value that is approximately the same as that of a human tissue; and

a plurality of crystalline test objects positioned on or within the body, wherein the crystalline test objects comprise a salt selected from the group consisting of calcium phosphate, calcium pyrophosphate, calcium sodium phosphate, calcium sodium pyrophosphate, calcium oxalate, calcium chloride, calcium oxide, sodium chloride, potassium chloride, barium chloride, potassium sulfate, sodium sulfide, aluminum oxide, and titanium oxide.

2. The radiographic phantom of claim 1 , wherein the human tissue is a breast tissue.

3. The radiographic phantom of claim 2 , wherein the breast tissue is selected from a fatty, low-density breast tissue and a dense breast tissue.

4. The radiographic phantom of claim 1 , wherein the body comprises at least two layers of the wax material or the wax-like material, and wherein the crystalline test objects are positioned between the at least two layers.

5. The radiographic phantom of claim 1 , wherein the crystalline test objects are positioned within channels in the body.

6. The radiographic phantom of claim 1 , wherein the crystalline test objects are positioned along a straight line or a curved line upon or within the body.

7. The radiographic phantom of claim 1 , wherein the crystalline test objects are positioned on a fiber upon or within the body.

8. The radiographic phantom of claim 1 , wherein the wax material or the wax-like material is selected from the group consisting of a petroleum-derived waxy material, an animal wax, a plant wax, and a polyethylene wax.

9. The radiographic phantom of claim 8 , wherein the petroleum-derived waxy material is a paraffin wax.

10. The radiographic phantom of claim 8 , wherein the animal wax is a beeswax, a sealing wax, or a lanolin.

11. The radiographic phantom of claim 8 , wherein the plant wax is a carnauba wax, a soy wax, a castor wax, or a tallow tree wax.

12. The radiographic phantom of claim 1 , wherein the crystalline test objects are of different shapes.

13. A method comprising:

obtaining a radiographic phantom comprising a body and a plurality of crystalline test objects, wherein the body comprises a wax material or a wax-like material, and wherein the body has an x-ray attenuation value that is approximately the same as that of a human breast tissue;

positioning the crystalline test objects within a pattern of channels in the body, wherein the pattern of channels is based on a microfluidics model;

performing an operation of the radiographic phantom and using a device; and

assessing a performance of the device based on the operation.

14. The method of claim 13 , wherein the human breast tissue is selected from a fatty, low-density breast tissue and a dense breast tissue.

15. The method of claim 13 , wherein the operation is a mammography operation.

16. The method of claim 13 , further comprising the step of preselecting the plurality of crystalline test objects from a crystalline test object farm prior to the crystalline test objects being positioned on or within the body.

17. The method of claim 16 , wherein the step of preselecting the plurality of crystalline test objects is performed manually, or at least partially using artificial intelligence.

18. The method of claim 13 , further comprising growing the crystalline test objects in a crystal farm.

19. A method comprising:

obtaining a mathematical model for a desired radiographic phantom configuration; and

building a radiographic phantom according to the desired radiographic phantom configuration of the mathematical model, wherein the radiographic phantom comprises a body and a plurality of crystalline test objects positioned on or within the body, wherein the body comprises a wax material or a wax-like material, wherein the body has an x-ray attenuation value that is approximately the same as that of a human breast tissue, wherein the crystalline test objects are positioned within a pattern of channels in the body, and wherein the pattern of channels is based on a microfluidics model;

performing an operation of the radiographic phantom and using a device; and

assessing a performance of the device based on the operation.

20. The method of claim 19 , further comprising growing the crystalline test objects in a crystal farm.

Assignments (1)

Continuity (2)

References Cited (24)