Wagatsuma K, Oda K, Miwa K, et al. 「Effects of a novel tungsten-impregnated rubber neck shield on the quality of cerebral images acquired using 15O-labeled gas.」Radiol Phys Technol.

Wagatsuma K, Oda K, Miwa K, et al. 「Effects of a novel tungsten-impregnated rubber neck shield on the quality of cerebral images acquired using 15O-labeled gas.」Radiol Phys Technol. 2017 Aug 19.
https://www.ncbi.nlm.nih.gov/pubmed/28823084