J Korean Radiol Soc.  1978 Dec;14(2):477-485. 10.3348/jkrs.1978.14.2.477.

Improvement in energy and scattering distribution of high energy electron for tumor radio-therapy

• Chu SS
• Lee DH
• Park CY

• KMID: 2349455
• DOI: http://doi.org/10.3348/jkrs.1978.14.2.477

Abstract

High energy electron beams, because of their sharp dose fall-off at the perlp hery and rapid dose build up fortumor have come to be used frequently for tumor radio-therapy, however, also have a lot of problems in clinical application because of various conversion factors and compliation of physical reactions. We have experimentally studied the dose distribution of scattering materials and high energies from the linear accelerator LMR-13, installed in Yonsei Cancer Center. 1. The electron energies are measured precisely with energy spectrometer consisted of magnetic analyzer and tele-control detector. and the practical electron energies are calculated under5% errors by maximum range of high enery electron beam in the water, and energy of electron is decreased as about 2MeV by penetrating of 1cm thickness of water. 2. The electron beams, using the scatteres and cones with variuos materials, ie., gold, tin, copper, lead, lucite, acryl, aluminium foils, could be adquately distributed in tumorand minimizing the induce x--ray in normal tissue. 3. The therapeutic capacity with limited electron energy couldbe extended further using by optimum scatteres. cones and energy absorbers.

MeSH Terms

Copper
Particle Accelerators
Polymethyl Methacrylate
Tin
Water
Copper
Polymethyl Methacrylate
Tin
Water