An Effective Radiological Safety Program for Electron Linear Accelerators

New Applications for Linear Electron Accelerators*

Electron linacs in the 100 MeV to 25 GeV energy range have by now been in operation for periods ranging from one year to over 20 years. In 1951 the Mark III accelerator at Stanford became the first electron linac to exceed an energy of 100 MeV. Since then significant increases in maximum electron energy have been made by the h'Iark III (reaching an energy of 1 GeV in 1960) and SLAC (exceeding 2...

Medical Applications of Electron Linear Accelerators

The role of radiation therapy in cancer management is first defined: today among the cancer patients who are cured (≅ 45 %) about one half are cured by radiation therapy applied alone or in combination with surgery or chemotherapy. The experience accumulated in decades shows that, to be efficient, the radiation treatment must be delivered with a high physical selectivity. At present, electron l...

Establishing an Effective Product Safety Management Program

Improved electron collimation system design for Elekta linear accelerators

Prototype 10 × 10 and 20 × 20-cm2 electron collimators were designed for the Elekta Infinity accelerator (MLCi2 treatment head), with the goal of reducing the trimmer weight of excessively heavy current applicators while maintaining acceptable beam flatness (±3% major axes, ±4% diagonals) and IEC leakage dose. Prototype applicators were designed initially using tungsten trimmers of constant thi...

Linear Electron Accelerators for Deep X-ray Therapy

S OF RECENT SCIENTIFIC PUBLICATIONS OF N.V. PHILIPS' GLOEILAMPENFABRIEKEN Reprints of these papers not marked with an asterisk • can be obtained free of charge upon application to Philips Electrical Ltd., Century House, Shaftesbury Avenue, London W.C.2. 2161: R. Vermeulen: Sound recording. General review, presented at the first I.C:A. Congress on Electro-accoustics, Delft, 1953 (Acustica 4, 17-...