In the article titled “Magnetic resonance imaging for adaptive cobalt tomotherapy: A proposal”, published on pages 242-254, Issue 4, Volume 31 of Journal of Medical Physics,[1] the name of the third author is written incorrectly as “Schreiner L John” instead of “L. John Schreiner”.The “How to cite this article” section should read correctly as “Kron T, Eyles D, Schreiner LJ, Battista J. Magnetic resonance imaging for adaptive cobalt tomotherapy: A proposal. J Med Phys 2006;31:242-254”.