Figure 1.
Any hexahedron can be divided into 6 tetrahedrons.
(A) A cuboid can be divided into 6 tetrahedrons. (B) The corresponding deformed cuboid is composed of 6 deformed tetrahedrons.
Figure 2.
A coronal view of a typical case of ventilation change.
Dose distribution is displayed in (A) and the absolute ventilation distribution before treatment is shown in (B). Absolute, LDWV normalized, percentile and TV normalized ventilation change distributions are shown in (C), (D) (E) and (F) respectively.
Figure 3.
Ventilation and ventilation change distributions in the volume receiving 5 to 20 Gy for a typical case using different ventilation datasets.
(A) Ventilation change distributions. Abs stands for absolute, pct for percentile, LDWV for low-dose well-ventilated normalized, TV for TV-normalized. The vertical dash line represents the value of no change. (B) Percentage ventilation distribution for the same case. vent1 stands for the pre-treatment ventilation, vent2 for the post-treatment ventilation.
Figure 4.
Ventilation change versus dose region curves for the 4 different ventilation data sets for all the 6 cases studied.
LDWV stands for low-dose well-ventilated and TV for tidal volume.