Table 2 Measured values for ITVMIP and ITVAIP in dependence on the surrounding tissue and the tumor size in a 4D-CT. Relative size in % in regard to the ITV10 and overlapping volume (VOL) in cm3 as well as conformation numbers (CN) of IT VMIP and ITVAIP with the ITV10
From: Moving targets in 4D-CTs versus MIP and AIP: comparison of patients data to phantom data
n= | MIP | AIP | ||||||
|---|---|---|---|---|---|---|---|---|
% | VOL | CN | % | VOL | CN | |||
Tumor surrouding | only lung tissue | 10 | 79.8 ± 11.6 | 77.5 ± 9.6 | 0.75 ± 0.1 | 68.4 ± 14.1 | 67.5 ± 13.3 | 0.67 ± 0.1 |
chestwall | 20 | 76.4 ± 14.1 | 73.6 ± 11.3 | 0.71 ± 0.1 | 66.3 ± 11.8 | 65.2 ± 11.0 | 0.64 ± 0.1 | |
mediastinum | 16 | 71.0 ± 15.4 | 68.9 ± 13.9 | 0.67 ± 0.1 | 61.8 ± 15.3 | 60.7 ± 14.5 | 0.59 ± 0.1 | |
diaphragm | 4 | 46.1 ± 11.1 | 43.7 ± 11.1 | 0.41 ± 0.1 | 59.1 ± 11.9 | 58.0 ± 12.4 | 0.57 ± 0.1 | |
Tumor size (Diameter) | ≤2.5 cm | 14 | 67.2 ± 19.4 | 64.8 ± 17.9 | 0.63 ± 0.2 | 55.2 ± 16.0 | 54.0 ± 14.7 | 0.53 ± 0.1 |
2.6–3.4 cm | 19 | 75.1 ± 13.9 | 72.6 ± 11.5 | 0.72 ± 0.1 | 66.0 ± 12.5 | 65.0 ± 11.8 | 0.64 ± 0.1 | |
≥3.5 cm | 17 | 76.7 ± 13.3 | 74.1 ± 11.7 | 0.71 ± 0.1 | 71.3 ± 6.9 | 70.1 ± 6.4 | 0.69 ± 0.1 | |
PTT | < 0.5 cm | 21 | 77.1 ± 16.8 | 73.8 ± 15.0 | 0.71 ± 0.1 | 68.4 ± 10.4 | 67.2 ± 9.9 | 0.65 ± 0.1 |
0.5–1 cm | 22 | 72.5 ± 13.8 | 70.2 ± 12.1 | 0.68 ± 0.1 | 64.1 ± 12.8 | 63.1 ± 12.1 | 0.62 ± 0.1 | |
> 1 cm | 7 | 65.5 ± 16.3 | 64.6 ± 15.3 | 0.63 ± 0.1 | 55.9 ± 20.2 | 55.0 ± 19.0 | 0.54 ± 0.1 | |
Total | 50 | 73.4 ± 15.6 | 71.0 ± 13.9 | 0.69 ± 0.1 | 64.7 ± 13.5 | 63.7 ± 12.8 | 0.63 ± 0.1 | |