Correction to: Japanese Journal of Radiology (2021) 39:783–790 https://doi.org/10.1007/s11604-021-01118-4

In the original publication, the second author Noriyo Yanagawa should be treated as co-first author and the article note should be included as given in this Correction.

Also, the affiliation of sixth author: Takanori Inui, should be: Department of Radiology, Tokyo Metropolitan Cancer and Infectious Diseases Center Komagome Hospital, Tokyo, Japan, as listed in this Correction.