Table 2 Differences between CT and MRI delineation
From: Impact of MRI on target volume definition in head and neck cancer patients
Group | (A) No relevant change | (B) Relevant change | (C) All patients |
|---|---|---|---|
Number of patients | 5 | 11 | 16 |
Absolute volume (MRI-CT) [ml] (median; range) | -0.5 (-4.7–1) | 4 (-8.5–10) | 0.75 (-8.5–10) |
Relative volume (MRI-CT) [%] [median, range] | -2.46 (-27.7–15.63) | 19.64 (-18.4–47.78) | 10.7 (-27.7–47.8) |
DSI [median, range] | 0.734 (0.606–0.919) | 0.775 (0.507–0.942) | 0.769 (0.507–0.942) |
HD95 [mm] [median, range] | 5.97 (2.92–9.06) | 6.41 (2.82–19.21) | 5.97 (2.82–19.21) |
Final GTV not contained in PTV (CT) | 0 (0%) | 7 (64%) | 7 (44%) |