US 2019/0160307 A1 · BEAM SHAPING ASSEMBLY FOR NEUTRON CAPTURE THERAPY

Abstract

The present disclosure provides a beam shaping assembly for neutron capture therapy, wherein the beam shaping assembly includes a neutron generating device, a moderator, a disturbing unit and a beam outlet. The neutron generating device is used to generate neutrons that form a neutron beam in a direction from the neutron generating device to the beam outlet, the moderator adjacent to the neutron generating device for adjusting fast neutrons in the neutron beam to epithermal neutrons. The disturbing unit is located between the moderator and the beam outlet for passing through the neutron beam and reducing the gamma ray content in the neutron beam passing through the beam outlet. The technical solution provided by the present disclosure can effectively reduce the gamma ray content in the neutron beam under the premise that the quality of the neutron beam is not significantly adversely affected.

Claims20

Dependent claims

A beam shaping assembly for neutron capture therapy, comprising:

a neutron generating device housed within the beam shaping assembly for generating neutrons, wherein neutrons form a neutron beam in a direction from the neutron generating device to the beam outlet, the neutron beam defines a beam axis;
a moderator adjacent to the neutron generating device for moderating fast neutrons in the neutron beam to epithermal neutrons;
a disturbing unit;
and
a beam outlet;
wherein the beam shaping assembly produces gamma rays in the process of adjusting the neutron beam energy spectrum, the disturbing unit is located between the moderator and the beam outlet for passing through the neutron beam and reducing the gamma ray content in the neutron beam passing through the beam outlet.

3 more elements

A beam shaping assembly for neutron capture therapy, comprising:

a neutron generating device housed within the beam shaping assembly for generating neutrons, wherein neutrons form a neutron beam in a direction from the neutron generating device to the beam outlet, the neutron beam defines a beam axis;
a moderator adjacent to the neutron generating device for moderating fast neutrons in the neutron beam to epithermal neutrons;
a reflector surrounding the moderator and the disturbing unit for reflecting the neutrons deviating from the neutron beam back to the neutron beam to enhance the neutron beam intensity;
a disturbing unit;
and
a beam outlet;
wherein the beam shaping assembly produces gamma rays in the process of adjusting the neutron beam energy spectrum, the disturbing unit is located after the neutron generating device for passing through the neutron beam and reducing the gamma ray content in the neutron beam passing through the beam outlet.

4 more elements

A beam shaping assembly for neutron capture therapy, comprising:

a neutron generating device housed within the beam shaping assembly for generating neutrons, wherein neutrons form a neutron beam in a direction from the neutron generating device to the beam outlet, the neutron beam defines a beam axis;
a moderator adjacent to the neutron generating device for moderating fast neutrons in the neutron beam to epithermal neutrons;
a disturbing unit;
and
a beam outlet;
wherein the beam shaping assembly produces gamma rays in the process of adjusting the neutron beam energy spectrum, the disturbing unit defines an axis and the axis of the disturbing unit coincides or is parallel to the beam axis for passing through the neutron beam and reducing the gamma ray content in the neutron beam passing through the beam outlet, the internal structure of the disturbing unit is a porous structure.

3 more elements

Dependencies are inferred from the claim text.

Beam shaping assembly for neutron capture therapy

Life of this patent

Beam shaping assembly for neutron capture therapy

Life of this patent

Abstract

Claims20