| Paper Abstract and Keywords |
| Presentation |
2025-02-20 16:15
[Memorial Lecture]
Microwave energy transmission by dielectric waveguides
Toshiya Nakagawa, Tsugumi Nishidate, Kazuyuki Saito (Chiba Univ.) |
| Abstract |
(in Japanese) |
(See Japanese page) |
| (in English) |
Microwave energy devices are surgical energy devices excellent for coagulation of biological tissue and are mainly used for haemostatic procedures. They also prevent excessive heating and charring of tissue during surgery and minimise the generation of smoke, and are therefore attracting attention as safe devices that do not cause reduced visibility. However, microwave energy devices have a complex structure because the electromagnetic waves, which are the energy source, act on the living tissue via transmission lines and antennas. In addition, many energy devices, including microwave energy devices, come into direct contact with living tissue and must be disposed of after a single use for hygienic reasons. This makes the complexity of the disposal process and disposal costs an issue [1]. On the other hand, microwaves are characterised by their ability to propagate through dielectrics such as plastic and glass, as energy is transmitted as waves. If this feature could be applied to realise a microwave energy device composed of a dielectric waveguide without using metallic components, it would simplify the device structure and disposal process.
In this study, the propagation characteristics of microwaves in dielectric waveguides were evaluated using numerical calculations. SAR (Specific Absorption Rate) calculations assuming heating of biological tissue surfaces and SAR measurements using a tissue-equivalent solid phantom were carried out and compared with the numerical results to verify the feasibility of a microwave energy device composed of dielectric waveguides. |
| Keyword |
(in Japanese) |
(See Japanese page) |
| (in English) |
dielectric waveguide / Microwave energy device / Electromagnetic field calculation / Specific absorption rate / / / / |
| Reference Info. |
ITE Tech. Rep., vol. 49, no. 6, BCT2025-31, pp. 29-30, Feb. 2025. |
| Paper # |
BCT2025-31 |
| Date of Issue |
2025-02-13 (BCT) |
| ISSN |
Online edition: ISSN 2424-1970 |
| Download PDF |
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| Conference Information |
| Committee |
BCT IEEE-BT |
| Conference Date |
2025-02-20 - 2025-02-21 |
| Place (in Japanese) |
(See Japanese page) |
| Place (in English) |
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| Topics (in Japanese) |
(See Japanese page) |
| Topics (in English) |
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| Paper Information |
| Registration To |
BCT |
| Conference Code |
2025-02-BCT-BT |
| Language |
Japanese |
| Title (in Japanese) |
(See Japanese page) |
| Sub Title (in Japanese) |
(See Japanese page) |
| Title (in English) |
Microwave energy transmission by dielectric waveguides |
| Sub Title (in English) |
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| Keyword(1) |
dielectric waveguide |
| Keyword(2) |
Microwave energy device |
| Keyword(3) |
Electromagnetic field calculation |
| Keyword(4) |
Specific absorption rate |
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| 1st Author's Name |
Toshiya Nakagawa |
| 1st Author's Affiliation |
Chiba University (Chiba Univ.) |
| 2nd Author's Name |
Tsugumi Nishidate |
| 2nd Author's Affiliation |
Chiba University (Chiba Univ.) |
| 3rd Author's Name |
Kazuyuki Saito |
| 3rd Author's Affiliation |
Chiba University (Chiba Univ.) |
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| Speaker |
Author-1 |
| Date Time |
2025-02-20 16:15:00 |
| Presentation Time |
30 minutes |
| Registration for |
BCT |
| Paper # |
BCT2025-31 |
| Volume (vol) |
vol.49 |
| Number (no) |
no.6 |
| Page |
pp.29-30 |
| #Pages |
2 |
| Date of Issue |
2025-02-13 (BCT) |