The Korean Journal of Nuclear Medicine Technology (KJNMT) accepts submissions that have previously been made available as preprints provided that they have not undergone peer review. A preprint is a draft version of a paper made available online before submission to a journal. Note that posting a preprint does not affect the peer review process. Since KJNMT is an Open Access journal and the copyright is retained by the author(s), the author(s) can make the article available at any postprint media, provided the original work is properly cited.