Detached collimator apparatus for radiation therapy

Details Detached collimator apparatus for radiation therapy Detached collimator apparatus for radiation therapy

1988-10-05

1989-11-14

Fields, Carolyn E.

Radiant energy

Radiation controlling means

2504923, 378147, H01J 2946

Patent

active

048809853

ABSTRACT:
A collimator apparatus is disclosed for directing a high energy electron beam from an accelerator through an exit aperture and through a spaced and non-connected collimator tube in juxtaposition with a target area in a patient. The collimator tube is adjustably positioned and positionally maintained by jig structure supported independently of the accelerator structure. A rod type alignment device is releasably positionable in the collimator tube to define alignment of that tube by a novel method using traditional isocentric motions of a patient couch and accelerator gantry. Collimator tubes of varying diameters and exit configurations may be selectively utilized to accurately conform an electron beam to a particular target area and provide uniform irradiation over that target area.

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"Improved Collimation System for Diamond-Anvil High Pressure Cells", by Schiferl et al., Rev. Sci. Instrum., 54(9), Sep. 1983, (pp. 1250-1251).

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