ABSTRACT
Conformal and Intensity-Modulated Radiotherapy . . . . . . . . . . . . . . . . . . . . . . . . . 943
Steve Webb
Chapter 44
Intensity-Modulated Radiotherapy: Practical Aspects . . . . . . . . . . . . . . . . . . . . . . . 975
C.-M. Charlie Ma (with Helen Mayles and Philip Mayles)
Chapter 45
Stereotactic Techniques . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 987
Jim Warrington
Chapter 46
Proton Beams in Radiotherapy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1005
Alejandro Mazal
Chapter 47
Total Body Irradiation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1033
Philip Mayles (with Ginette Marinello)
Chapter 48
Total Skin Electron Irradiation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1043
David Thwaites and Alan McKenzie (with Ginette Marinello)
Chapter 49
High-LET Modalities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1053
Roland Sabattier, Oliver Ja
¨
kel, and Alejandro Mazal
References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1069
In this Part we cover all those external-beam radiotherapy techniques that, for a variety of
reasons, do not easily fit into conventional treatment planning (Part G). Today Conformal
Therapy (CFRT)* is no longer considered to be a special technique, but it is used here as a
foundation for introducing Intensity-Modulated Radiotherapy (IMRT) which is a particular
form of CFRT (Chapter 43). The deceptively simple idea of introducing another degree of
freedom in treatment planning, namely to create deliberate variations or modulations in the
intensity across the beam, has spawned an unprecedented period of development in treatment
machine technology (e.g. dynamically controlled multileaf collimators (MLC)), in treatment
planning systems capable of so-called inverse planning, and also in the search for trulymeaningful
criteria by which to judge the merit of a treatment plan (see Part G, Chapter 36). A separate
chapter is devoted to the clinical implementation of IMRT (Chapter 44).
