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At the time the article was created Zemar Vajuhudeen had no recorded disclosures.View Zemar Vajuhudeen's current disclosures
At the time the article was last revised Raymond Chieng had no financial relationships to ineligible companies to disclose.View Raymond Chieng's current disclosures
An electronvolt (eV) is defined as the energy required to accelerate a single electron at rest through an electron potential difference of one volt in a vacuum 3. This is different from the electrical potential difference applied to the X-ray tube in terms of kiloVolts (kV) 3. However, the kV applied to an X-ray tube is approximately equal to the maximum photon energy achievable by a photon (keVmax) 3.
1 eV ≈ 1.603 x 10-19 J
Electronvolts are a more mathematically convenient method to describe the miniscule quantity of energy associated with photons in imaging physics.
The energy required in diagnostic x-rays falls within the range of kiloelectronvolts (keV), whereas the higher energy required in radiotherapy is often expressed in megaelectronvolts (MeV).
- 1. Penelope Allisy-Roberts, Jerry R. Williams. Farr's Physics for Medical Imaging. (2007) ISBN: 9780702028441
- 2. Alan Martin, Sam Harbison, Karen Beach et al. Introduction to Radiation Protection. (2012) ISBN: 9781444146073
- 3. Penelope J. Allisy-Roberts, Jerry Williams. Farr's Physics for Medical Imaging. (2007) ISBN: 9780702028441. Page 2. - Google Books