Collimator apparatus and method

Details Collimator apparatus and method Collimator apparatus and method

1986-08-15

1988-04-19

Anderson, Bruce C.

Radiant energy

Radiation controlling means

378152, G21K 102, G21K 104

Patent

active

047391731

ABSTRACT:
A collimator apparatus (10 or 100) including one or more bundles of nested rods (11, 11a or 101 or 101a or 201) which define a surface (112, 112a) which interferes with a beam of radiation is described. The apparatus particularly uses coil spring (48) between and along the axis (a--a or c--c) of the rods which are compressed by blocks (13, 14, 13a and 14a or 103, 104, 103a and 104a) to lock the rods in position in holes in the blocks. The apparatus is particularly useful for shaping radiation beams for patient treatment.

REFERENCES:
patent: 1909118 (1933-05-01), Raab
patent: 3543384 (1970-12-01), Hansen
patent: 4053808 (1977-10-01), Peacock
patent: 4158779 (1979-06-01), Rommel et al.
patent: 4463266 (1984-07-01), Brahme
patent: 4534052 (1985-08-01), Milcamps

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