![]() The process and hazards of magnetic resonance imaging are well explained. Basics of electricity were well covered, as were electromagnetism and alternating current, including some good basic science and although pacing and defibrillation and electrical safety are covered, how to deal with pacing and diathermy is not covered so clearly. Unfortunately, modes of ventilation were a disappointing section, which perhaps was not strictly relevant to this text, although the physics of flow in, for example, high-frequency oscillation might be more in keeping with the ethos of the book. ![]() This is followed by breathing systems including the Mapleson classification and CO 2 removal. The book deals with measuring gases and vapours, including the Clark, Sanz, and Severinghaus electrodes, then goes on to delivering vapours via vaporizers, summarizing the principles involved, medical gas supplies including cylinder design, and the behaviour of gases that liquefy in a cylinder. Osmosis and areas regarding, isotonic, hypertonic, and hypotonic solutions could have usefully been expanded or better defined. The properties of gases and the related gas laws are summarized. ![]() Humidity, flows, and their measurement are well dealt with, together with the effects we see in different systems such as Venturi and Coanda.
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