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The short arc acquisition time intervals of different arc sizes in seconds.
| Patient No. | 1 | 2a | 3 | 4 |
|---|---|---|---|---|
| Single projectionb | 0.2 | 0.2 | 0.2 | 0.2 |
| 6 degrees | 4 | 4 or 8 | 8 | 8 |
| 9 degrees | 6 | 6 or 12 | 12 | 12 |
| 30 degrees | 20 | 20 or 40 | 40 | 40 |
Gantry rotation speed was 1.5 deg/s for scan 1 and 0.75 deg/s for scan 2 of patient 2. The short arc time intervals for scan 1 are therefore shorter than that for scan 2.
Projection acquisition rate was ~5 Hz.
