Table 1 Patient characteristics
From: Variation of heart and lung radiation doses according to setup uncertainty in left breast cancer
Deep inspiration breath hold (N = 15) | Free breath (N = 15) | ||||
|---|---|---|---|---|---|
pT-stage 0: 1: 2 | 1a: 9: 5 | 0: 9: 6 | |||
pN-stage 0: 1 | 14: 1 | 14: 1 | |||
Median | Range | Median | Range | P valueb | |
|---|---|---|---|---|---|
Age (years) | 54 | 41–66 | 48 | 39–63 | 0.715 |
Tangential angle (°) | 311 | 306–318 | 312 | 302–316 | 1.000 |
Field height (cm) | 20 | 17–22 | 20 | 18–21.5 | 0.245 |
Mean | SD | Median | SD | P valuec | |
|---|---|---|---|---|---|
Clinical target volume (ml) | 682.2 | 280.6 | 669.2 | 242.9 | 0.892 |
Heart (ml) | 616.0 | 82.2 | 645.1 | 81.5 | 0.339 |
Left ventricle (ml) | 151.1 | 22.6 | 160.7 | 26.8 | 0.298 |
Left anterior descending coronary artery (ml) | 1.1 | 0.1 | 1.1 | 0.1 | 0.271 |
Lung, ipsilateral (ml) | 1600.7 | 409.4 | 923.1 | 227.6 | < 0.001 |