A preprint can be defined as a version of a scholarly paper that precedes formal peer review and publication in a peer-reviewed scholarly journal.

Korean Journal of Interventional Radiology (KJIR) allows authors to submit the preprint to the journal. It is not treated as duplicate submission or duplicate publication. KJIR recommends authors to disclose it with DOI in the letter to the editor during the submission process. Otherwise, it may be screened from the plagiarism check program — Similarity Check (Crosscheck). Preprint submission will be processed through the same peer-review process as a usual submission. If the preprint is accepted for publication, authors are recommended to update the information at the preprint with a link to the published article in KJIR, including DOI at KJIR. It is strongly recommended that authors cite the article in KJIR instead of the preprint at their next submission to journals