Monte Carlo-Based Dose Calculation in Postprostatectomy Image-Guided Intensity Modulated Radiotherapy: A Pilot Study
Table 1
Comparison between XiO S&S, Monaco S&S, and Monaco VMAT treatment plans for five postprostatectomy patients: CTV coverage, OAR dose-volumes. and treatment delivery parameters (means (SD)).
Parameter
XiO S&S
Monaco S&S
Monaco VMAT
CTV 100% TD (%)
97.98 (0.01)
99.85 (0.00)
99.44 (0.00)
Rectum V40Gy (%)
58.06 (0.06)
46.36 (0.09)
54.66 (0.05)
Rectum V60Gy (%)
31.25 (0.04)
19.89 (0.05)
21.09 (0.04)
Rectum V65Gy (%)
14.29 (0.09)
11.34 (0.03)
10.35 (0.03)
Bladder V50Gy (%)
41.91 (0.13)
32.97 (0.09)
37.96 (0.08)
Lt. femoral head mean dose (Gy)
19.89 (3.78)
16.18 (1.86)
14.69 (0.93)
Rt. femoral head mean dose (Gy)
14.76 (8.40)
12.74 (7.18)
11.52 (7.46)
Number of segments/fraction
116.8 (22.0)
78.6 (8.3)
141.0 (27.0)
MU/fraction
770.7 (76.2)
677.6 (76.3)
676.7 (29.6)
Delivery time (minutes)
7.6 (1.1)
5.7 (0.9)
4.8 (0.3)
Monaco S&S versus XiO, . Monaco VMAT versus XiO, . Monaco S&S versus Monaco VMAT, .