Low-Dose and Scatter-Free Cone-Beam CT Imaging Using a Stationary Beam Blocker in a Single Scan: Phantom Studies

<table>The CBCT tabletop system and Catphan 600 phantom. The designed blocker is mounted in front of the collimator and shown in an enlarged insert. The lead blocker is sandwiched between two layers of thin steel, each with a thickness of 0.2 mm, to improve the mechanical strength.</table>

Computational and Mathematical Methods in Medicine

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Figure 1

Figure 1: Low-Dose and Scatter-Free Cone-Beam CT Imaging Using a Stationary Beam Blocker in a Single Scan: Phantom Studies 