Electricity in medicine

Recent progress in the application of electricity to medical science is reviewed. The use of electronic techniques is characteristic of modern practice, and the applications to diagnosis and therapy are described together with details of the equipment, evolution and design. Alternative principles are listed and indication is given of any outstanding design problems. Maintenance is discussed and the trends of future development are indicated. No attempt is made to include items under the general classification of radiography or the many minor improvements in thermal or illuminating devices, although these form an essential part of modern hospital equipment.