Collimator assembly for an electron accelerator

Details Collimator assembly for an electron accelerator Collimator assembly for an electron accelerator

1980-07-14

1982-11-16

Smith, Alfred E.

X-ray or gamma ray systems or devices

Beam control

Collimator

2505051, A61N 510, G21K 102, H05H 700

Patent

active

043596428

ABSTRACT:
The collimator assembly comprises a collimator shielding block for blocking undesired X-rays and an insert piece inserted into the shielding block. The insert piece which is made of a material of high atomic number, has an inner conical surface which defines the X-ray cone transmitting the insert piece and therefore the maximum field size which can be obtained for medical treatment. In order to supply different maximum field sizes, there are provided means for easily interchanging the insert in the collimator shielding block with another insert having a different interior conical dimension. By using inserts of different cone angles, which can easily be inserted into the shielding block, for instance by means of a screw thread from below the shielding block, morbid tissues of different sizes can be treated while the surrounding healthy tissue is fully protected.

REFERENCES:
patent: 2998526 (1961-08-01), Green et al.
patent: 3407300 (1968-10-01), Hansen
patent: 3781564 (1973-12-01), Lundberg
patent: 4157475 (1979-06-01), Stock et al.

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