Article Figures & Data
Figures
- Figure 1
- The positioning of the maxillary sinus in relation to planning target volume (PTV), clinical target volume (CTV) and organs at risk.
- Figure 2
- Different scenarios of sinusitis A) the original CT, B) modified phantom for experiment 1 (half water-filled sinuses) referred to as scenario b, C) the scenario c for experiment 2 (fully water-filled sinuses).
- Figure 3
- The linear accelerator treatment head.
- Figure 4
- The percentage depth dose in the phantom, ranging from -17 cm to 3 cm, are displayed in different scenarios: a) using a 3 cm x 3 cm field size, b) a 5 cm x 5 cm field size, and c) a 10 cm x 10 cm field size. The grey shaded area represents this range within the patient. The blue shaded area, spanning from -15 cm to -10 cm, corresponds to the sinuses, while the yellow shaded area, ranging from -12.5 cm to -7 cm, represents planning target volume.
Tables
- Table 1
- The averaged dose difference and 2D evaluating GPRs percentages for various field sizes within PTV.
Field size (cm2) 3x3 5x5 10x10 Scenario b c b c b c Dose difference (%) PTV at sinusitis 14.03 17.00 7.90 8.27 8.05 8.50 after sinusitis -2.64 -5.10 -2.82 -5.14 -3.14 -6.06 2D GPRs (%) 94.50 94.50 96.90 96.90 92.60 92.50 PTV: planning target volume, GPRs: gamma passing rates
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