Ultrasonic inspection phantom and method of manufacturing same

Patent metadata

Field	Value
Publication number	US-11076839-B2
Application number	US-201816202177-A
Country	US
Kind code	B2
Filing date	Nov 28, 2018
Priority date	Dec 7, 2017
Publication date	Aug 3, 2021
Grant date	Aug 3, 2021

Abstract

An ultrasonic inspection phantom includes ultrasonic inspection phantom including a hydrogel including water, a polymer, and a mineral.

First claim

What is claimed is:

1. An ultrasonic inspection phantom, comprising:
a hydrogel comprising water, a polymer, and a water swellable laminate clay mineral,
wherein the water swellable laminate clay mineral is included in an amount of from 1 to 7.15 percent by mass to a total amount of the ultrasonic inspection phantom, and
the water is enclosed in a three-dimensional network structure of a complex combination of the polymer and the water swellable laminate clay mineral.

2. The ultrasonic inspection phantom according to claim 1 , further comprising:
a metal oxide having a specific surface area of 50 m 2 /g or greater.

3. The ultrasonic inspection phantom according to claim 2 ,
wherein the metal oxide comprises silica.

4. The ultrasonic inspection phantom according to claim 2 ,
wherein the metal oxide comprises alumina-containing silica.

5. The ultrasonic inspection phantom according to claim 1 , wherein the ultrasonic inspection phantom includes a pseudo lesion mimicking a lesion caused in a living tissue.

6. The ultrasonic inspection phantom according to claim 5 ,
wherein ultrasonic propagation in the pseudo lesion is slower than in the ultrasonic inspection phantom excluding the pseudo lesion.

7. The ultrasonic inspection phantom according to claim 6 ,
wherein the pseudo lesion comprises a metal oxide having a specific surface area of 150 m 2 /g or greater.

8. The ultrasonic inspection phantom according to claim 7 ,
wherein the metal oxide comprises silica.

9. The ultrasonic inspection phantom according to claim 7 ,
wherein the metal oxide comprises alumina-containing silica.

10. The ultrasonic inspection phantom according to claim 1 , wherein the ultrasonic inspection phantom has a self-healing property.

11. A method for training for puncture treatment of ultrasonic inspection, the method comprising:
performing an ultrasonic inspection, puncture treatment, or both, on the ultrasonic inspection phantom according to claim 1 .

12. A method of manufacturing the ultrasonic inspection phantom of claim 1 , the method comprising:
forming the ultrasonic inspection phantom using a liquid material.

13. The method according to claim 12 , wherein the forming of the ultrasonic inspection phantom comprises
casting the liquid material into a mold, and
hardening the liquid material.

14. The method according to claim 12 , wherein the forming of the ultrasonic inspection phantom comprises fabricating the ultrasonic inspection phantom by a 3D printer using the liquid material.

15. The method according to claim 14 , wherein the 3D printer employs an inkjet method or stereolithography.

16. The ultrasonic inspection phantom according to claim 1 ,
wherein the water swellable laminate clay mineral comprises at least one selected from the group consisting of water swellable smectite and water swellable mica.

17. The ultrasonic inspection phantom according to claim 1 ,
wherein the water swellable laminate clay mineral comprises at least one selected from the group consisting of water swellable hectorite, water swellable montmorillonite, water swellable saponite, and water swellable synthesized mica.

18. The ultrasonic inspection phantom according to claim 1 ,
wherein the water swellable laminate clay mineral is included in an amount of from 1 to 7.06 percent by mass to a total amount of the ultrasonic inspection phantom.

19. The ultrasonic inspection phantom according to claim 1 ,
wherein the ultrasonic inspection phantom includes a pseudo lesion mimicking a lesion caused in a living tissue, and a non-pseudo lesion,
the pseudo lesion comprises a metal oxide comprising silica having a specific surface area of 150 m 2 /g or greater, and
the non-pseudo lesion does not comprise the metal oxide.

20. The ultrasonic inspection phantom according to claim 1 ,
wherein the polymer has at least one group selected from the group consisting of an amide group, an amino group, a hydroxyl group, a tetramethyl ammonium group, a silanol group, and an epoxy group.

21. The ultrasonic inspection phantom according to claim 1 ,
wherein the polymer is a polymerized product of at least one polymerizable monomer selected from the group consisting of acrylamides, N-substituted acrylamide derivatives, N,N-di-substituted acrylamide derivatives, N-substituted methacrylamide derivatives, N,N-di-substituted methacrylamide derivatives, 2-etylhexyl(meth)acrylate (EHA), 2-hydroxyethyl(meth)acrylate (HEA), 2-hydroxypropyl(meth)acrylate (HPA), acryloyl morpholine (ACMO), caprolactone-modified tetrahydrofurfuryl(meta)acrylate, isobonyl(meth)acrylate, 3-methoxybutyl(meth)acrylate, tetrahydro furfuryl(meth)acrylate, lauryl(meth)acrylate, 2-phenoxyethyl(meth)acrylate, isodecyl(meth)acrylate, isooctyl(meth)acrylate, tridecyl(meth)acrylate, caprolactone(meth)acrylate, ethoxyfied nonylphenol(meth)acrylate, and urethane(meth)acrylate.

Assignees

• Niimi Tatsuya
• Matsumura Takashi
• Saito Takuya
• Ricoh Co Ltd

Inventors

• Niimi Tatsuya
• Matsumura Takashi
• Saito Takuya

Classifications

• G09B23/286 Primary

  for scanning or photography techniques, e.g. X-rays, ultrasonics · CPC title

• A61B2017/3413

  guided by ultrasound · CPC title

• A61B8/587 Primary

  Calibration phantoms · CPC title