An Investigation of Calibration Phantoms for CT Scanners with Tube Voltage Modulation
Figure 4
Images of water phantom. (a) Corrected image using water calibration phantom shown in Figure 3(a). (b) Corrected image using water calibration phantom shown in Figure 3(b). (c) Reconstructed image without correction. (d) Intensity plots for lines through the reconstructed images of (a), (b), and (c): the dot line, the dash-dot line, and the solid line represent intensity profiles of the central horizontal line in (a), (b), and (c), respectively.
