562 / 1840
Planned dose vs averaged over 3 scans
PTV remains constant
V100 and D90 lower on follow-up scans
No large decrease in V100
Planning CT
Average
Mean difference p
V100 (%)
95.5 [94.1-96.9]
94.2 [93.0-95.3]
-1.2 [-1.9:-0.6]
NA
V100 (cc)
32.4 [28.6-36.1]
31.8 [28.3-35.4]
-0.5 [-0.9:-0.1]
0.02
D90 (cGy)
132.1 [129.6:134.7] 128.9 [126.8:130.9] -3.3 [-4.8:-1.8]
0.00
A. Dinkla. Radiother Oncol 2013;107: 106-111