Amakusa S, Matsuoka K, Kawano M, et al. 「Influence of region-of-interest determination on measurement of signal-to-noise ratio in liver on PET images.」Ann Nucl Med.

Amakusa S, Matsuoka K, Kawano M, et al. 「Influence of region-of-interest determination on measurement of signal-to-noise ratio in liver on PET images.」Ann Nucl Med. 2017 Oct 20.
https://www.ncbi.nlm.nih.gov/pubmed/29058224