Evaluating the Therapeutic Dose Distribution of Intensity-Modulated Radiation Therapy for Head and Neck with Cone-Beam Computed Tomography Image: A Methodological Study
Table 1
Gamma pass rate of dose comparison between CBCT- and FBCT-based head phantom hybrid plans for 10 head and neck IMRT cases.
Case number
Transversal
Sagittal
Coronal
3%—3 mm
2%—2 mm
3%—3 mm
2%—2 mm
3%—3 mm
2%—2 mm
1
99.75%
97.22%
99.46%
97.49%
99.50%
98.53%
2
99.94%
99.27%
99.57%
97.47%
99.56%
98.98%
3
99.86%
98.83%
99.29%
96.93%
99.27%
98.54%
4
99.89%
98.77%
99.38%
97.37%
99.26%
98.57%
5
99.84%
98.77%
99.36%
97.13%
99.31%
98.47%
6
99.89%
98.79%
100.00%
99.94%
100.00%
99.54%
7
99.84%
98.88%
99.44%
97.45%
99.45%
98.70%
8
99.88%
98.96%
99.21%
97.03%
99.18%
98.35%
9
99.85%
98.60%
99.64%
98.00%
99.98%
99.61%
10
99.84%
98.74%
99.44%
97.22%
99.49%
98.76%
Ave. ± Std
99.86 ± 0.05%
98.68 ± 0.52%
99.48 ± 0.21%
97.60 ± 0.83%
99.50 ± 0.27%
98.81 ± 0.42%
Note: gamma pass rate counted all the points with a dose >10% of the prescribed dose.
