US 12,270,770 B2
Systems and methods for monitoring feature sizes in digital X-ray imaging
Paul Benson, Waltham, MA (US); and Jason William Bourn, Stratham, NH (US)
Assigned to QSA Global Inc., Burlington, MA (US)
Filed by QSA Global Inc., Burlington, MA (US)
Filed on Jul. 28, 2022, as Appl. No. 17/875,945.
Claims priority of provisional application 63/227,714, filed on Jul. 30, 2021.
Prior Publication US 2023/0034628 A1, Feb. 2, 2023
Int. Cl. G01N 23/18 (2018.01); G01N 23/04 (2018.01); G01N 23/083 (2018.01)
CPC G01N 23/18 (2013.01) [G01N 23/04 (2013.01); G01N 23/083 (2013.01); G01N 2223/401 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A portable radiography scanning system, comprising:
a radiation detector configured to generate a digital image based on incident radiation;
a radiation emitter configured to output the radiation;
a frame configured to hold at least one of the radiation emitter or the radiation detector such that the radiation emitter directs the radiation to the radiation detector;
a first sensor configured to determine a first distance between the radiation detector and the radiation emitter; and
a computing device configured to:
determine a second distance between the radiation emitter and an interface between the radiation and the object by:
measuring a third distance between the radiation emitter and a first location on an outer surface of the object via a second sensor;
measuring a fourth distance between the radiation emitter and a second location on the outer surface of the object via a third sensor; and
determining the second distance based on the third distance and the fourth distance;
determine a magnification correction factor based on the first distance and the second distance;
measure a size, in pixels, of a feature of the object in the digital image; and
at least one of: calculate an actual size of the feature based on the magnification correction factor and the measured size of the feature, or determine whether the measured size of the feature satisfies a threshold size based on the magnification correction factor.