<P>From the essential background physics and radiobiology to the latest imaging and treatment modalities, the updated second edition <B>of Handbook of Radiotherapy Physics: Theory & Practice</B> covers all aspects of the subject.</P><P></P><P>In <B>Volume 1</B>, Part A includes the Interaction of Radiation with Matter (charged particles and photons) and the Fundamentals of Dosimetry with an extensive section on small-field physics. Part B covers Radiobiology with increased emphasis on hypofractionation. Part C describes Equipment for Imaging and Therapy including MR-guided linear accelerators. Part D on Dose Measurement includes chapters on ionisation chambers, solid-state detectors, film and gels, as well as a detailed description and explanation of Codes of Practice for Reference Dose Determination including detector correction factors in small fields. Part E describes the properties of Clinical (external) Beams. The various methods (or ¿algorithms¿) for Computing Doses in Patien