US 11,940,395 B2
Enclosed x-ray chopper wheel
Paul Bradshaw, Boston, MA (US)
Assigned to Videray Technologies, LLC, Charlestown, MA (US)
Appl. No. 17/631,949
Filed by VIDERAY TECHNOLOGIES, INC., Charlestown, MA (US)
PCT Filed Jul. 28, 2020, PCT No. PCT/US2020/043814
§ 371(c)(1), (2) Date Feb. 1, 2022,
PCT Pub. No. WO2021/025898, PCT Pub. Date Feb. 11, 2021.
Claims priority of provisional application 62/882,398, filed on Aug. 2, 2019.
Prior Publication US 2022/0283103 A1, Sep. 8, 2022
Int. Cl. G01N 23/203 (2006.01); G01V 5/222 (2024.01); G21K 1/04 (2006.01)
CPC G01N 23/203 (2013.01) [G01V 5/222 (2024.01); G21K 1/043 (2013.01); G01N 2223/314 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A chopper wheel assembly configured for use with a source of x-ray energy, the chopper wheel assembly comprising:
a collimator configured to narrow an x-ray beam generated by the source of x-ray energy;
a chopper wheel having a planar surface configured to face in a direction of the collimator, a central axis, a plurality of slits in the planar surface, the plurality of slits extending in a radially-outward direction relative to the central axis, a first projection extending from the planar surface in a direction of the collimator, the first projection located radially-outward of the plurality of slits and provided for 360 degrees about the central axis, and a second projection extending from the planar surface in the direction of the collimator, the second projection located radially inward of the plurality of slits and provided for 360 degrees about the central axis; and
a housing including a hollow interior region configured to receive the chopper wheel, the housing including an interior wall facing toward the chopper wheel and away from the direction of the collimator, the interior wall including a first groove configured to receive the first projection and a second groove configured to receive the second projection with the chopper wheel received within the hollow interior region.