Evaluating the Therapeutic Dose Distribution of Intensity-Modulated Radiation Therapy for Head and Neck with Cone-Beam Computed Tomography Image: A Methodological Study

Table 2

Gamma pass rates on the isocentric planes between CBCT- and FBCT-based IMRT plans with 10 patient’s images.

Case number	Transversal plane (T)		Sagittal plane (S)		Coronal plane (C)
	3%—3 mm	2%—2 mm	3%—3 mm	2%—2 mm	3%—3 mm	2%—2 mm
1	99.98%	99.86%	99.99%	99.95%	99.99%	99.91%
2	99.79%	95.35%	99.99%	99.68%	99.87%	95.10%
3	99.37%	95.05%	99.92%	98.54%	99.08%	94.93%
4	99.99%	98.37%	100.00%	98.93%	100.00%	97.88%
5	99.86%	96.41%	100.00%	100.00%	99.96%	98.70%
6	100.00%	99.60%	100.00%	99.99%	100.00%	99.54%
7	99.96%	97.55%	99.83%	98.11%	99.68%	94.69%
8	100.00%	99.61%	100.00%	99.82%	100.00%	99.89%
9	100.00%	99.87%	100.00%	99.83%	100.00%	99.93%
10	99.92%	98.50%	99.78%	97.33%	100.00%	96.81%
Ave. ± Std	99.89 ± 0.18%	98.00 ± 1.76%	99.95 ± 0.08%	99.22 ± 0.90%	99.86 ± 0.28%	97.74 ± 2.08%