Talk:Orthovoltage X-rays

Orthovoltage: kV not keV
Strictly speaking KeV is the correct unit. However, in radiation oncology, kV and mV are conventionally used in order to distinguish photons from electrons, which are described in units of MeV. Jellytussle 00:04, 16 February 2006 (UTC)

Etymology
Does anyone know the origin of the term "Orthovoltage"?