Figure 3.

Correlation of the mean dose reduction to dHVIF: (a) mean dose to heart, (b) mean dose to LAD artery with dHVIF are presented. Correlation of the mean dose reduction to mean DIBH amplitude with 5 mm bin size. (c) Mean dose to heart, (d) mean dose to LAD artery with sternal excursion are presented. The red solid line is the linear fit to the measured data ($\mathrm{y}\hspace{0.17em}=\hspace{0.17em}\text{Ax}\hspace{0.17em}+\hspace{0.17em}\mathrm{B}$: $(\mathrm{a})\mathrm{A}=8.1,\mathrm{B}=26.0\text{cGy},\mathrm{R}2=0.84,(\mathrm{b})\mathrm{A}=81.6,\mathrm{B}=109.1\text{cGy},\mathrm{R}2=0.82,(\mathrm{c})\mathrm{A}=1.4,\mathrm{B}=35.6\text{cGy},\mathrm{R}2=0.81,(\mathrm{d})\mathrm{A}=21.2,\mathrm{B}=102.4\text{cGy},\mathrm{R}2=0.81$). It is noted that the linear fit to the measured data with $\mathrm{B}\hspace{0.17em}=\hspace{0.17em}0$ are $(\mathrm{a})\mathrm{A}=10{.1,\mathrm{R}}^2=0.65,(\mathrm{b})\mathrm{A}=90{.2,\mathrm{R}}^2=0.79,(\mathrm{c})\mathrm{A}=3{.5,\mathrm{R}}^2=‐1.77,(\mathrm{d})\mathrm{A}=27{.4,\mathrm{R}}^2=0.72$ (fitting lines not included in the figure).