Phantom and method for producing same

Patent metadata

Field	Value
Publication number	US-12023635-B2
Application number	US-201916531229-A
Country	US
Kind code	B2
Filing date	Aug 5, 2019
Priority date	Aug 22, 2018
Publication date	Jul 2, 2024
Grant date	Jul 2, 2024

Abstract

The present invention relates to the phantom comprises water, an oil, an emulsifier and a water coagulating agent, and having a scattering coefficient of 5 to 20 cm −1 at a wavelength of 750 to 1000 nm.

First claim

What is claimed is:

1. A phantom comprising:
water;
an oil, wherein the volume ratio of the water to the oil (water:oil) in the phantom is 80:20 to 60:40;
an emulsifier; and
a water coagulating agent, and
having a scattering coefficient of 5 to 20 cm −1 at a wavelength of 750 to 1000 nm.

2. The phantom according to claim 1 , wherein the water coagulating agent is kanten.

3. A method for producing the phantom according to claim 1 , comprising:
a mixing step of mixing water, the oil, the emulsifier and the water coagulating agent to obtain a mixed liquid,
the phantom having a scattering coefficient of 5 to 20 cm −1 at a wavelength of 750 to 1000 nm.

4. The method for producing the phantom according to claim 3 , wherein the mixing step comprises producing an oil-in-water emulsion by performing stirring under a condition in which at least a part of the water, the oil and the emulsifier are present.

5. The method for producing the phantom according to claim 3 , comprising a step of solidifying the mixed liquid.

6. The method for producing the phantom according to claim 4 , comprising a step of solidifying the mixed liquid.

7. The phantom according to claim 1 , wherein the phantom is an oil-in-water emulsion.

8. The phantom according to claim 1 , wherein the oil comprises soybean oil.

9. The phantom according to claim 1 , wherein the emulsifier comprises lecithin.

10. The phantom according to claim 1 , wherein a content of the emulsifier is 0.5% by mass or more and 5.0% by mass or less per 100% by mass of the oil.

11. The phantom according to claim 1 , wherein a content of the water coagulating agent is 0.5% by mass or more and 3.0% by mass or less based on the total amount of the phantom.

12. The phantom according to claim 1 , wherein the scattering coefficient of the phantom at a wavelength of 750 to 1000 nm is 7 cm −1 or more and 15 cm −1 or less.

13. The phantom according to claim 1 , wherein the scattering coefficient of 5 to 20 cm −1 at the wavelength of 750 to 1000 nm is indicative of the water, the oil, the emulsifier, and the water coagulating agent being stirred into a mixture at a temperature range from 0° C. to 10° C.

14. The phantom according to claim 1 , wherein the scattering coefficient of 5 to 20 cm −1 at the wavelength of 750 to 1000 nm is indicative of an entirety of the water having been simultaneously mixed into the oil.

15. A phantom comprising:
water;
an oil;
an emulsifier; and
a water coagulating agent that is dissolved in the water at a concentration of 5 g per 1000 mL to 5 g per 800 mL of water or 0.1% to 1.0% by mass based on a total amount of the phantom, and
having a scattering coefficient of 5 to 20 cm −1 at a wavelength of 750 to 1000 nm.

Assignees

• Hamamatsu Photonics Kk

Inventors

• Ohmae Etsuko
• Yoshimoto Kenji
• Wada Hiroko
• Ueda Yukio

Classifications

• G01N21/49

  within a body or fluid · CPC title

• B01F23/48

  characterised by the nature of the liquids (B01F23/47 takes precedence) · CPC title

• B01F23/80

  After-treatment of the mixture · CPC title

• G01N21/359

  using near infrared light · CPC title

• B01F23/4105

  Methods of emulsifying · CPC title