Journals are a magazine that deals with a particular subject or professional activity.
Academic journals are academic magazines and like magazines they are periodicals, meaning they are published periodically (e.g. monthly or bi-monthly) and contain a series of articles in each published issue. Journals are written by and for experts in their chosen field and are used as a means for scholars and researchers to share their research with the academic community.
Below are links to a few radiography journals to get you started.