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Journal of Visualization

, Volume 14, Issue 3, pp 265–272 | Cite as

Temperature distribution in deep tissue phantom during laser irradiation at 1,064 nm measured by thermocouples and thermal imaging technique

  • Jiyong Cho
  • Hyuk Byun
  • Seungdeok Lee
  • Jung Kyung KimEmail author
Regular Paper

Abstract

Moxibustion generates heat stimulation which expands blood vessels and promotes blood circulation. Furthermore, moxibustion provokes the release of diffuse noxious inhibitory controls (DNIC) to treat and prevent diseases. However, inherent drawbacks, such as pain, burn scars, smoke and bad smells, limit its use. A novel noncontact-type laser therapy device having effect similar to that of commercial moxibustion is being developed using a 1,064-nm infrared (IR) diode-pumped solid state (DPSS) laser. The therapy device allows direct interaction of laser light with the skin rendering temperature distribution both on the skin surface and deep under the skin. We devised a sample holder containing a tissue phantom to measure the three-dimensional temperature distribution with thermocouples inserted deep inside the phantom. Agar gel of 2.5% concentration was used as the tissue phantom in our experiments. Our results revealed that the maximum temperature occurred far below the surface of the tissue phantom, which was heated by laser irradiation at 1,064 nm. This occurrence was also confirmed by a thermal imaging method. In contrast, temperature gradually decreased through the depth of the tissue phantom heated with commercial moxibustion. Simple analytical models were constructed to explain the underlying heat-transfer mechanisms involved in moxibustion and laser irradiation.

Graphical Abstract

Keywords

Moxibustion Infrared laser Laser irradiation Tissue phantom Agar gel Sample holder Temperature distribution 

Notes

Acknowledgments

This study was supported by a grant of the Traditional Korean Medicine R&D Project, Ministry for Health & Welfare & Family Affairs, Republic of Korea (B090040), and also by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology (2009-0075194).

Supplementary material

Supplementary material 1 (MPG 2972 kb)

Supplementary material 2 (MPG 3714 kb)

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Copyright information

© The Visualization Society of Japan 2011

Authors and Affiliations

  • Jiyong Cho
    • 1
  • Hyuk Byun
    • 2
  • Seungdeok Lee
    • 2
  • Jung Kyung Kim
    • 3
    Email author
  1. 1.Department of Mechanical Engineering, Graduate SchoolKookmin UniversitySeoulKorea
  2. 2.Department of Oriental Medicine, Graduate SchoolDongguk UniversitySeoulKorea
  3. 3.School of Mechanical EngineeringKookmin UniversitySeoulKorea

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