公开(公告)号：US20230211180A1

公开(公告)日：2023-07-06

申请号：US18000609

申请日：2021-06-01

Applicant: Elekta Limited

Inventor： Mark Furth ,  Martin Broad ,  Antonio Cossu ,  Roberto Anselmi

IPC: A61N5/10

CPC classification number: A61N5/1045 ,  A61N5/1081 ,  A61N2005/1095

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.