1. Radiant energy of a certain frequency range; e.g., radio and television employ radiant energy having a frequency between 105–1011 Hz, while diagnostic x-rays have a frequency in the range of 3 × 1018 Hz. 2. In magnetic resonance imaging, the energy applied to switch or create a gradient in the magnetic field.

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ra·dio·fre·quen·cy (ra″de-o-freґkwən-se) radio frequency.

Medical dictionary. 2011.

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