Beam shaping assembly for neutron capture therapy
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United States of America Patent
Stats
-
May 22, 2018
Issued Date -
N/A
app pub date -
May 6, 2015
filing date -
Dec 8, 2014
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A beam shaping assembly for neutron capture therapy includes a beam inlet, a target having nuclear reaction with an incident proton beam from the beam inlet to produce neutrons forming a neutron beam defining a main axis, a moderator adjoining to the target, a reflector surrounding the moderator, a thermal neutron absorber adjoining to the moderator, a radiation shield arranged inside the beam shaping assembly and a beam outlet. The neutrons are moderated to epithermal neutron energies. An outer surface of the moderator includes at least a first tapered section. The reflector leads the neutrons deviated from the main axis back. The thermal neutron absorber is used for absorbing thermal neutrons so as to avoid overdosing in superficial normal tissue during therapy. The radiation shield is used for shielding leaking neutrons and photons so as to reduce dose of the normal tissue not exposed to irradiation.
First Claim
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International Classification(s)
- 2015 Application Filing Year
- G21G Class
- 64 Applications Filed
- 47 Patents Issued To-Date
- 73.44 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 10 Citation Count
- G21G Class
- 36.44 % this patent is cited more than
- 7 Age
Maintenance Fees
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|---|---|---|---|---|
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Nov 22, 2025 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Nov 22, 2029 |
