Source of Support: None, Conflict of Interest: None
Scientific community has depended on the BJR Supplements on central axis depth dose data published from time to time. There have been five Supplements since 1953 when Supplement No. 5 was first published on the subject. The frequent revisions, addition of new data and updating with the technological advancements are special features of these Supplements. The most recent Supplement is numbered 25 and has
been brought out in 1996. A review of the data in respect of Co-60, MV X-rays and electron beams as described in the Supplements is the subject matter of this write-up.