ID 109516
Author
Kubo, Hitoshi Department of Medical Imaging, Institute of Health Biosciences, the University of Tokushima Graduate School
Otani, Tamaki Program in Biomedical Information Science, the University of Tokushima Graduate School Tokushima University Educator and Researcher Directory KAKEN Search Researchers
Otsuka, Hideki Department of Medical Imaging, Institute of Health Biosciences, the University of Tokushima Graduate School Tokushima University Educator and Researcher Directory KAKEN Search Researchers
Harada, Masafumi Department of Radiology, Institute of Health Biosciences, the University of Tokushima Graduate School Tokushima University Educator and Researcher Directory KAKEN Search Researchers
Keywords
self-shielded cyclotron
PET/CT for small animals
radiation dose
magnetic field
Content Type
Journal Article
Description
Purpose : The purpose of this study was to evaluate the impact of a cyclotron on small-animal PET equipment installed directly above the cyclotron. Methods : The cyclotron equipment was HM-12, which has two targets, and the PET/CT equipment was Inveon. The equipment was installed in conformity to Japanese law and regulations. Before installation of the PET/CT equipment, the radiation dose, radio waves, and static and fluctuating magnetic fields were measured at the position where it would be placed, both when the cyclotron was in use and when it was not in use. After installation of the PET/CT, natural background and emission counts were measured at the same place under the same conditions. Results : An increase of radiation dose was observed when the target nearest the PET equipment was used. There were no distinct effects of radio waves or static and fluctuating magnetic fields. A significant increase of emission counts, approximately 300 cpm, was observed when the nearest target was used. Conclusions : Though radio waves and static and fluctuating magnetic fields generated by running cyclotron had no influence, a significant increase in emission count was observed. Careful attention should be paid to this influence when very low-radioactivity PET measurements are done.
Journal Title
The journal of medical investigation : JMI
ISSN
13431420
NCID
AA11166929
Volume
61
Issue
1-2
Start Page
46
End Page
52
Sort Key
46
Published Date
2014-02
EDB ID
FullText File
language
eng
TextVersion
Publisher
departments
Advance Radiation Research, Education, and Management Center
Medical Sciences