ABSTRACT
From Measurements to Calculations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 433
Philip Mayles
Chapter 21
Kilovoltage X-Rays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 439
Philip Mayles
Chapter 22
Megavoltage Photon Beams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 451
Philip Mayles and Peter Williams
Chapter 23
Manual Dose Calculations in Photon Beams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 483
Ivan Rosenberg
Chapter 24
Electron Beams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 519
David Thwaites and Alan McKenzie
References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 539
The equipment used to deliver the correct amount of dose to the patient has been intro-
duced in Part C. The methods by which absolute dose and relative dose distributions are
measured have been dealt with in Part D. It is then necessary to devise a methodology
where these measurements are used to make accurate predictions of the dose distribution
delivered to the patients, taking into account the beam characteristics as well as the
patient characteristics.
