Pulsed electromagnetic field therapy (PEMF) is a medical treatment that purportedly helps to heal bone tissue reported in a recent NASA study. Diathermy equipment typically operates in the short-wave radio frequency (range 1–100 MHz) or microwave energy (range 434–915 MHz). The technique is particularly valuable in neurosurgery and surgery of the eye. Surgically, the extreme heat that can be produced by diathermy may be used to destroy neoplasms, warts, and infected tissues, and to cauterize blood vessels to prevent excessive bleeding. Diathermy is used in physical therapy to deliver moderate heat directly to pathologic lesions in the deeper tissues of the body. It is also a method of heating tissue electromagnetically for therapeutic purposes in medicine. It is commonly used for muscle relaxation. RF diathermy is a medical treatment that uses RF induced heat as a form of physical therapy and in surgical procedures. Radio frequencies at non-ablation energy levels are commonly used as a part of aesthetic treatments that can tighten skin, reduce fat by lipolysis and also apoptosis, or promote healing. Magnetic resonance imaging (MRI) uses radio frequency waves to generate images of the human body. Medical applications of radio frequency (RF) energy, in the form of electromagnetic waves ( radio waves) or electrical currents, have existed for over 125 years, and now include diathermy, hyperthermy treatment of cancer, electrosurgery scalpels used to cut and cauterize in operations, and radiofrequency ablation.
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