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. 2021 Feb 28;13(5):1001. doi: 10.3390/cancers13051001

Table 1.

Metrics used for the evaluation of the impact of motion on the RF heating of the Duke head model (Duke) and the CRM of the head. The Duke 1 and CRM 1 columns show the numerical results of simulations (Figure 8A,C) with the head models being placed in the center of the RF applicator. The Duke 2 and CRM 2 columns are the numerical results of simulations (Figure 8B,D) with the human head models being placed off-center (5 mm displacement upwards). SAF: SAR amplification factor; THQ: tumor-to-hotspot quotient; TC: target coverage.

Metrics Duke 1 (A) Duke 2 (B) Relative Difference (%) CRM 1 (C) CRM 2 (D) Relative Difference (%)
SAR10g,max(tumor), W/kg 64.56 61.47 −4.79 84.50 65.65 −22.31
SAR10g,max(healthy), W/kg 40 44.06 +10.15 40 44.44 +11.1
SAR10g,mean(tumor), W/kg 48.06 45.92 −4.45 42.77 36.34 −15.03
SAR10g,mean(healthy), W/kg 18.36 18.51 +0.82 19.46 16.95 −12.90
Ptumor/Vtumor, W/L 61.19 58.51 −4.38 36.56 30.92 −15.43
SAF 2.62 2.48 −5.34 2.20 2.14 −2.73
THQ 1.23 1.15 −9.84 1.10 1.01 −8.18
TC(SARtumor > SARLim) 85.9% 78.8% −8.27 57.1% 38% −33.45