Summary of positional shifts (Δx, Δy, Δz) for Head and Neck, Chest, and Pelvic groups.
| . | Head and Neck . | Chest . | Pelvic . | ||||||
|---|---|---|---|---|---|---|---|---|---|
| z . | y . | x . | z . | y . | x . | z . | y . | x . | |
| Mean | 0.1 | 0.1 | 0.1 | 0.1 | 0.2 | 0.2 | 0.1 | 0.2 | 0.2 |
| Min | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Max | 0.5 | 0.8 | 0.7 | 0.6 | 0.9 | 0.9 | 0.7 | 1.0 | 1.0 |
| Percentile 1 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Percentile 5 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Percentile 25 | 0.0 | 0.0 | 0.0 | 0.0 | 0.1 | 0.1 | 0.0 | 0.1 | 0.1 |
| Percentile 75 | 0.1 | 0.2 | 0.2 | 0.2 | 0.3 | 0.3 | 0.1 | 0.3 | 0.3 |
| Percentile 95 | 0.2 | 0.4 | 0.3 | 0.3 | 0.5 | 0.5 | 0.3 | 0.5 | 0.4 |
| Percentile 99 | 0.3 | 0.5 | 0.4 | 0.4 | 0.6 | 0.6 | 0.4 | 0.6 | 0.6 |
| . | Head and Neck . | Chest . | Pelvic . | ||||||
|---|---|---|---|---|---|---|---|---|---|
| z . | y . | x . | z . | y . | x . | z . | y . | x . | |
| Mean | 0.1 | 0.1 | 0.1 | 0.1 | 0.2 | 0.2 | 0.1 | 0.2 | 0.2 |
| Min | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Max | 0.5 | 0.8 | 0.7 | 0.6 | 0.9 | 0.9 | 0.7 | 1.0 | 1.0 |
| Percentile 1 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Percentile 5 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Percentile 25 | 0.0 | 0.0 | 0.0 | 0.0 | 0.1 | 0.1 | 0.0 | 0.1 | 0.1 |
| Percentile 75 | 0.1 | 0.2 | 0.2 | 0.2 | 0.3 | 0.3 | 0.1 | 0.3 | 0.3 |
| Percentile 95 | 0.2 | 0.4 | 0.3 | 0.3 | 0.5 | 0.5 | 0.3 | 0.5 | 0.4 |
| Percentile 99 | 0.3 | 0.5 | 0.4 | 0.4 | 0.6 | 0.6 | 0.4 | 0.6 | 0.6 |
This table presents the mean, minimum, maximum, and various percentiles (1st, 5th, 25th, 75th, 95th, and 99th) of positional shifts in the x, y, and z axes for the head and neck, chest, and pelvic treatment groups. The data highlight the distribution and range of positional shifts, providing insights into the accuracy and variability of patient positioning in the halcyon system.
aPercentile xx means xx% of data is less than the given value. For example, a percentile of 75 = 0.1 indicates that 75% of the positional shifts were less than or equal to 0.1 cm. The percentiles thus offer a statistical overview of how positional shifts are distributed across the patient groups.
Summary of positional shifts (Δx, Δy, Δz) for Head and Neck, Chest, and Pelvic groups.
| . | Head and Neck . | Chest . | Pelvic . | ||||||
|---|---|---|---|---|---|---|---|---|---|
| z . | y . | x . | z . | y . | x . | z . | y . | x . | |
| Mean | 0.1 | 0.1 | 0.1 | 0.1 | 0.2 | 0.2 | 0.1 | 0.2 | 0.2 |
| Min | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Max | 0.5 | 0.8 | 0.7 | 0.6 | 0.9 | 0.9 | 0.7 | 1.0 | 1.0 |
| Percentile 1 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Percentile 5 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Percentile 25 | 0.0 | 0.0 | 0.0 | 0.0 | 0.1 | 0.1 | 0.0 | 0.1 | 0.1 |
| Percentile 75 | 0.1 | 0.2 | 0.2 | 0.2 | 0.3 | 0.3 | 0.1 | 0.3 | 0.3 |
| Percentile 95 | 0.2 | 0.4 | 0.3 | 0.3 | 0.5 | 0.5 | 0.3 | 0.5 | 0.4 |
| Percentile 99 | 0.3 | 0.5 | 0.4 | 0.4 | 0.6 | 0.6 | 0.4 | 0.6 | 0.6 |
| . | Head and Neck . | Chest . | Pelvic . | ||||||
|---|---|---|---|---|---|---|---|---|---|
| z . | y . | x . | z . | y . | x . | z . | y . | x . | |
| Mean | 0.1 | 0.1 | 0.1 | 0.1 | 0.2 | 0.2 | 0.1 | 0.2 | 0.2 |
| Min | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Max | 0.5 | 0.8 | 0.7 | 0.6 | 0.9 | 0.9 | 0.7 | 1.0 | 1.0 |
| Percentile 1 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Percentile 5 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Percentile 25 | 0.0 | 0.0 | 0.0 | 0.0 | 0.1 | 0.1 | 0.0 | 0.1 | 0.1 |
| Percentile 75 | 0.1 | 0.2 | 0.2 | 0.2 | 0.3 | 0.3 | 0.1 | 0.3 | 0.3 |
| Percentile 95 | 0.2 | 0.4 | 0.3 | 0.3 | 0.5 | 0.5 | 0.3 | 0.5 | 0.4 |
| Percentile 99 | 0.3 | 0.5 | 0.4 | 0.4 | 0.6 | 0.6 | 0.4 | 0.6 | 0.6 |
This table presents the mean, minimum, maximum, and various percentiles (1st, 5th, 25th, 75th, 95th, and 99th) of positional shifts in the x, y, and z axes for the head and neck, chest, and pelvic treatment groups. The data highlight the distribution and range of positional shifts, providing insights into the accuracy and variability of patient positioning in the halcyon system.
aPercentile xx means xx% of data is less than the given value. For example, a percentile of 75 = 0.1 indicates that 75% of the positional shifts were less than or equal to 0.1 cm. The percentiles thus offer a statistical overview of how positional shifts are distributed across the patient groups.
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