BEAM SHAPING APPARATUS
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United States of America Patent
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Issued Date -
Jul 6, 2023
app pub date -
Jun 1, 2021
filing date -
Jun 2, 2020
priority date (Note) -
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Abstract
Disclosed herein is a radiation head for a radiotherapy device. The radiation head comprises a source of radiation configured to emit a beam of radiation; and beam shaping device for collimating the beam of radiation. The beam shaping device comprises a multi-leaf collimator; and a diaphragm positioned between the source and the multi-leaf collimator. The diaphragm comprises a diaphragm block movable along a curved path, the diaphragm block having a flat face focused on a focus point which is offset from the source of radiation.
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