Table 2.
Expansion Results Summary.
| Location to Carina | Average Expansion, mm (SD) | Average Absolute Expansion, mm (SD) | Range, mm | %≥5mm | %≥10mm | |
|---|---|---|---|---|---|---|
| Inter-fraction | ||||||
| RL | Below | 0.7 (3.7) | 2.8 (2.4) | −8.0 to 8.1 | 23% | 0% |
| Above | 1.8 (4.7) | 4.0 (3.0) | −6.2 to 11.5 | 35% | 6% | |
| AP | Below | −0.8 (3.6) | 2.9 (2.2) | −6.6 to 6.5 | 26% | 0% |
| Above | 1.3 (6.5) | 4.0 (5.2) | −6.3 to 28.4 | 19% | 6% | |
| Intra-fraction | ||||||
| RL | Below | 2.0 (5.6) | 3.9 ( 4.4) | −6.5 to 22.0 | 26% | 6% |
| Above | 2.2 (6.5) | 4.1 (5.4) | −17.4 to 26.4 | 19% | 6% | |
| AP | Below | −0.3 (3.2) | 2.5 (2.1) | −5.0 to 9.3 | 10% | 0% |
| Above | 1.0 (4.7) | 2.4 (4.2) | −2.7 to 23.9 | 3% | 3% | |
The inter- and intra-fraction mean, average of the absolute value, and range of esophageal expansion in the RL (right-left) and AP (anterior-posterior) directions, above and beyond the carina is reported. The percent of expansions greater than or equal to 5 mm and 10 mm is included. A negative value represents motion to the patient’s right for the RL direction and anterior for the AP directions. SD = Standard Deviation