Figures & data
Figure 1. Experimental setup during the thermal equilibrium of the PAA phantoms at different temperatures.
Figure 2. CT numbers of the PAA phantom obtained with three different CT reconstruction slice thickness of 1 mm (black, solid square), 5 mm (red, open circle) and 10 mm (blue, cross) correspond to different CT acquisition parameters: (A) tube voltage, (B) tube current, (C) and (D) shows the CT image noise corresponds to the tube voltage and tube current, respectively. (E) pitch and (F) gantry rotation time.
Figure 3. Effects of metal artifacts on the CT images for three set of different reconstructed slice thicknesses: (A) 1 mm, (B) 5 mm and (C) 10 mm, respectively. The targeted circular area shows the CT number on the particular ROI.
Figure 4. Effects of metal artifacts on CT number at 1 mm (A), 5 mm (B) and 10 mm (C) slice thickness. Zero value in x-axis indicates the position of RF needle, which has induced the highest CT number due to metal artifacts. The reference CT numbers of the phantom are 41.42 HU, 41.28 HU and 40.82 HU for 1 mm, 5 mm and 10 mm reconstructed slice thickness, respectively.
Figure 5. Dependence of CT number on tissue temperature obtained in the PAA phantom for 1 mm (black, solid square), 5 mm (red, open circle) and 10 mm (blue, cross) reconstructed slice thickness. The solid line represents a least-square linear fit to the all data (n = 15).
