“…The FBCT used the Somatom Sensation Open (Siemens Healthcare GmbH, Forchheim, Germany) for treatment planning, and the CBCT used the Vero's system. The CTP404 module in the Catphan 504 phantom (The Phantom Laboratory, Salem, NY), the Gammex 467 tissue characterization phantom (Gammex Inc., Middleton, WI), a set of tissue‐ and water‐equivalent materials developed using the stoichiometric analysis method (SAM) by Yohannes et al
(14)
(QRM GmbH, Möhrendorf, Germany), and a set of materials (see Table 1 from Yohannes et al
(18)
) for stoichiometric calibration (SC) were utilized in this work. The diameters of the inserts are 1 cm, 2.8 cm, and 2 cm for the CTP404, the Gammex 467, and all other materials, respectively.…”