2019 Fiscal Year Annual Research Report
Optical/gamma hybrid laparoscope research and development
| Project/Area Number |
19K21121
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| Allocation Type | Multi-year Fund |
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| Research Institution | National Institutes for Quantum and Radiological Science and Technology |
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Principal Investigator |
KANG HANGYU 国立研究開発法人量子科学技術研究開発機構, 放射線医学総合研究所 先進核医学基盤研究部, 研究員(任常) (90824467)
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| Project Period (FY) |
2019-04-01 – 2020-03-31
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| Keywords | Hybrid laparoscope / Sentinel lymph node / Gamma imaging / Optical imaging |
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| Outline of Annual Research Achievements |
The goal of this study is to develop a novel hybrid optical/gamma laparoscope which can visualize the sentinel lymph node (SLN) during the laparoscopic cancer surgery. For this project, two different modalities, one is the gamma camera, and the other is optical imaging system should be developed and integrated into a single laparoscope. The gamma camera part was developed using tungsten pinhole collimator, GAGG crystal and SiPM 8x8 array. The SiPM signals were multiplexed by using a custom-made front-end electronics. The output of the front-end electronics were digitized by using CAMAC DAQ system. The 2D gamma image was generated after the correction of the detection non-uniformity of the each GAGG crystal. The SLN phantom with the diameter of 10 mm filled with 99mTc was scanned by the developed gamma camera for 1 min. The SLN phantom was clearly visualized by the gamma camera with the pinhole diameters of 1 mm and 2 mm. For the optical imaging part, the optical system design, and the mechanical jig designs were finished. The optical imaging system is under development. In the near future, the hybrid optical/gamma laparoscope will be developed and performance will be evaluated with a phantom study.
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