US 12,356,537 B2
Neutron capture therapy system
Yuan-hao Liu, Fujian (CN); and Chun-ting Lin, Fujian (CN)
Assigned to NEUBORON THERAPY SYSTEM LTD., Fujian (CN)
Filed by NEUBORON THERAPY SYSTEM LTD., Fujian (CN)
Filed on Aug. 13, 2024, as Appl. No. 18/802,160.
Application 18/802,160 is a continuation of application No. 18/413,207, filed on Jan. 16, 2024, granted, now 12,238,850.
Application 18/413,207 is a continuation of application No. PCT/CN2022/105408, filed on Jul. 13, 2022.
Claims priority of application No. 202110807267.1 (CN), filed on Jul. 16, 2021.
Prior Publication US 2024/0431014 A1, Dec. 26, 2024
Int. Cl. H05H 3/06 (2006.01); A61N 5/10 (2006.01); C23C 14/16 (2006.01); C23C 14/34 (2006.01); C23C 16/40 (2006.01); C23C 16/455 (2006.01); C23C 28/00 (2006.01)
CPC H05H 3/06 (2013.01) [A61N 5/1077 (2013.01); C23C 14/165 (2013.01); C23C 14/34 (2013.01); C23C 16/403 (2013.01); C23C 16/45555 (2013.01); C23C 28/322 (2013.01); C23C 28/345 (2013.01); A61N 2005/109 (2013.01); H05H 2277/11 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A neutron capture therapy system, comprising:
a neutron generation device and a beam shaping body, wherein the neutron generation device comprises an accelerator and a target, and a charged particle beam generated by acceleration of the accelerator acts with the target to generate a neutron beam, the beam shaping body comprises a reflector, a moderator, a thermal neutron absorber, a radiation shield and a beam outlet, the moderator decelerates neutrons generated from the target to an epithermal neutron energy region, the reflector surrounds the moderator and guides deviated neutrons back to the moderator to improve intensity of an epithermal neutron beam, the thermal neutron absorber is configured to absorb thermal neutrons, to avoid excessive dose applied to normal tissues at shallow layers during treatment, the radiation shield is arranged around the beam outlet to shield leaked neutrons and photons, so as to reduce dose applied to normal tissues at non-irradiation regions, characterized in that the target comprises an active layer, an anti-foaming layer, a heat conduction layer and a heat dissipation layer, the active layer acts with an incident charged particle beam to generate a neutron beam, the anti-foaming layer is located behind the active layer in an incident direction of the charged particle beam and capable of suppressing foaming of the active layer during generation of the particle beam, the heat conduction layer transfers heat deposited in the active layer to the heat dissipation layer, and the heat dissipation layer discharges the heat;
wherein the heat conduction layer is arranged between the active layer and the anti-foaming layer, and the heat conduction layer is directly connected to the heat dissipation layer.