Assessment of Respiration-Induced Motion and Its Impact on Treatment Outcome for Lung Cancer
Table 3
The characteristics of high-mobility tumors (movement more than 5 mm).
Case
Tumor location
GTV (cm3)
Longest diameter (cm)
Attachment degree
fAP
fSI
dLR (mm)
dAP (mm)
dSI (mm)
Vector (mm)
A
RUL (apicoposterior segmental)
24.9
4.6
0.5
0.56
0.37
0.8
1
5.1
5.3
B
RUL (posterior basal segmental)
31.6
5.9
0.47
0.68
0.47
2.5
2.3
5.8
6.7
C
RUL (posterior basal segmental)
2.2
1.6
0
0.46
0.54
1.4
1
5.2
5.5
D
RUL (posterior basal segmental)
2.4
1.9
0
0.61
0.57
0.7
1.9
6.3
6.6
E
RLL (lateral posterior basal segmental)
165.3
6.2
0.92
0.78
0.82
2.5
2.1
5.1
6.1
F
RLL (dorsal segmental)
0.55
1.2
0
0.76
0.51
1.4
2
6
6.5
G
LLL (lingular bronchus)
12.5
2.9
0
0.42
0.74
2.6
5.2
11.7
13.1
H
RLL (anteriorbasal segmental)
2.2
1.4
Attach to diaphragm
0.12
0.9
5.3
1.7
5.6
7.9
I
LLL (lateral posterior basal segmental)
59.6
4.9
Attach to diaphragm
0.83
0.89
1.3
1.3
13.5
14
J
RLL (lateral basal segmental)
17.0
3.7
Attach to diaphragm
0.58
0.92
1.9
4.9
14.4
15.3
GTV: gross tumor volume; RUL: right upper lobe; RLL: right lower lobe; LLL: left lower lobe; fAP, fSI: fractional anterior-posterior, superior-inferior location, respectively; dLR, dAP, and dSI: the magnitude of motion in lateral, anterior-posterior (AP), and superior-inferior (SI) direction of ten respiratory phases, respectively.
