US 11,786,193 B2
Metal artifacts reduction in cone beam reconstruction
Jay S. Schildkraut, Rochester, NY (US); and Jean-Marc Inglese, Bussy-Saint-Georges (FR)
Appl. No. 17/419,081
Filed by CARESTREAM DENTAL LLC, Atlanta, GA (US)
PCT Filed Dec. 29, 2019, PCT No. PCT/US2019/068861
§ 371(c)(1), (2) Date Jun. 28, 2021,
PCT Pub. No. WO2020/142397, PCT Pub. Date Jul. 9, 2020.
Claims priority of provisional application 62/786,463, filed on Dec. 30, 2018.
Prior Publication US 2022/0110596 A1, Apr. 14, 2022
Int. Cl. A61B 6/00 (2006.01); A61B 6/03 (2006.01); A61B 6/14 (2006.01)
CPC A61B 6/4085 (2013.01) [A61B 6/032 (2013.01); A61B 6/145 (2013.01); A61B 6/5205 (2013.01); A61B 6/5258 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A method for reducing metal artifacts in a volume radiographic image of a region which includes at least a part of a dental arch and surrounding tissue, the method comprising the steps of:
acquiring an intraoral optical image of the region;
acquiring an X-ray cone beam scan of the region;
registering the intraoral optical image with a reconstructed volume of the X-ray cone beam scan;
identifying the location of metal in the reconstructed volume using the registered optical intraoral image; and
using the identified location of metal in the reconstructed volume to reduce metal artifacts in a subsequent reconstructed volume of the cone beam scan.