Source:http://linkedlifedata.com/resource/umls/id/C0010600
MSH: Devices for accelerating charged particles in a spiral path by a constant-frequency alternating electric field. This electric field is synchronized with the movement of the particles in a constant magnetic field.,UMD: Equipment designed to accelerate particles (typically protons or deuterons) to high energies by combining a strong magnetic field and an oscillating electric field. The path formed is a spiral or a circle. The accelerated particles at the output may be used as a radiotherapy treatment beam on the patient, either directly or after passing a suitable target, but cyclotrons are used more frequently for in situ production of short-term positron-emitting radiopharmaceuticals (radionuclides) used in positron-emission tomography (PET) systems.,NCI: A member of the class of particle accelerator devices in which charged particles are accelerated electrically to high speeds while kept confined in a circular path by a strong electromagnet. (Dr. Joseph A. Thie)