136-137 / 3581
Conventional RT and simulation
• At the end of previous century, patient set-up and the
determination of treatment beams was mainly guided by using a
treatment simulator and drawing skin marks
on the
patient’s surface, consequently used to position the patient with
respect to the treatment machine
•
only
35% of the radiotherapy centres were using a
simulator
for target localization in the treatment planning
process in 1983, and only 47% had access to this equipment in
1986
Chu
et al
, IJROBP 1989.