量研学術機関リポジトリ「QST-Repository」は、国立研究開発法人 量子科学技術研究開発機構に所属する職員等が生み出した学術成果（学会誌発表論文、学会発表、研究開発報告書、特許等）を集積しインターネット上で広く公開するサービスです。 Welcome to QST-Repository where we accumulates and discloses the academic research results(Journal Publications, Conference presentation, Research and Development Report, Patent, etc.) of the members of National Institutes for Quantum Science and Technology.
Thank you very much for using our website. On the 11th of March 2019, this site was moved from our own network server to the JAIRO Cloud network server. If you previously bookmarked this site, that bookmark will no longer work. We would be grateful if you could bookmark the website again. Thank you very much for your understanding and cooperation.
We are developing dedicated brain PET having a helmet detector, in which detectors are arranged on a hemisphere, and an add-on detector for improving sensitivity. We have developed a helmet-chin PET prototype, which is our initial idea to place the add-on detector at chin position. However, the detector at chin position sometimes gave an oppressive feeling to the patient. Meanwhile, our previous study showed the same sensitivity improvement can be achieved by placing the add-on detector at neck position. In this study, therefore, we developed helmet-neck PET by changing the add-on detector position from the chin to neck. Sensitivity measurement showed that the detector at neck had higher effect for improving the sensitivity for the brain region because the detector can be placed closer than that at chin, which requires a margin for the patient safety. In addition, healthy volunteer study using the prototype with 18F-FDG clearly visualized the brain structure. The helmet-neck has promising performance for high sensitivity brain imaging.
会議概要（会議名, 開催地, 会期, 主催者等）
The 12th Asia Oceania Congress of Nuclear Medicine and Biology
First healthy volunteer study of the helmet-neck PET prototype
