A nondivergent three field matching technique for breast irradiation.
Effective radiation therapy to intact breasts requires the delivery of adequate dose to a large target volume using complex beam arrangements. A semi-empirical method is described to determine the correct gantry, collimator, and couch positions for a geometrically accurate field match among adjoining radiation beams. The technique uses a metal rod and chain combination to aid determination of the proper couch setting under remote fluoroscopy control. A couch position error of more than half a degree is easily detectable by this technique.
Fox Chase Cancer Center, University of Pennsylvania, School of Medicine, Philadelphia.
J C
JC
Chu
L J
LJ
Solin
C C
CC
Hwang
B
B
Fowble
G E
GE
Hanks
R L
RL
Goodman
D001943:Breast Neoplasms / Q000532:radiotherapy*; D005260:Female; D006801:Humans; D011878:Radiotherapy / Q000295:instrumentation* / Q000379:methods