US 11,717,240 B2
Spatial-spectral filters for multi-material decomposition in computed tomography
Joseph Webster Stayman, Baltimore, MD (US); and Steven Tilley, Baltimore, MD (US)
Assigned to The Johns Hopkins University, Baltimore, MD (US)
Appl. No. 17/288,839
Filed by THE JOHNS HOPKINS UNIVERSITY, Baltimore, MD (US)
PCT Filed Oct. 25, 2019, PCT No. PCT/US2019/058056
§ 371(c)(1), (2) Date Apr. 26, 2021,
PCT Pub. No. WO2020/086958, PCT Pub. Date Apr. 30, 2020.
Claims priority of provisional application 62/750,328, filed on Oct. 25, 2018.
Prior Publication US 2021/0307707 A1, Oct. 7, 2021
Int. Cl. A61B 6/00 (2006.01); A61B 6/03 (2006.01)
CPC A61B 6/4042 (2013.01) [A61B 6/032 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A device for computed tomography (CT) imaging comprising:
a spatial-spectral filter, wherein the spatial-spectral filter is configured for use with a CT system and wherein the spatial-spectral filter is configured to spectrally shape a beam into a number of beamlets with different spectra;
wherein the spatial-spectral filter is formed from at least two distinct materials;
wherein the at least two distinct materials are alternated to form a repeating pattern of materials; and,
wherein the spatial-spectral filter is configured to translate with rotation.