1. A method, comprising: positioning at least one calibration disk in a computed tomography (CT) scanner, the at least one calibration disk being made of a powder and exhibiting a known density; positioning a pellet in the CT scanner, the pellet being made of the powder; scanning the at least one calibration disk and the pellet using the CT scanner to obtain one or more CT images of the pellet and the at least one calibration disk; and comparing a density of the pellet with the known density of the at least one calibration disk based on the one or more CT images.