Table 1.
The mean (±SD) of beam-flow angles, PSVs without and with the use of slanted gel pads by radiologist and all radiologists combined. Radiologists 12 and 13 designed this study and were aware of the purpose of the study, the other radiologists were not aware of the purpose of this study
| Radiologist | Mean beam-flow angle without gel pads (°) | Mean beam-flow angle with gel pads (°) | Mean PSV without gel pads (cm/s) | Mean PSV with gel pads (cm/s) |
|---|---|---|---|---|
| 1 | 63.6 (±2.6) | 50.4 (±3.0) | 101.8 (±5.6) | 85.5 (±7.0) |
| 2 | 65.6 (±1.7) | 58.8 (±2.3) | 109.3 (±7.2) | 98.6 (±8.1) |
| 3 | 70.0 (±1.4) | 58.8 (±1.8) | 97.7 (±8.6) | 86.0 (±2.5) |
| 4 | 68.0 (±2.4) | 60.8 (±1.1) | 99.9 (±7.7) | 81.1 (±6.0) |
| 5 | 73.6 (±1.2) | 62.8 (±4.0) | 118.4 (±7.6) | 81.1 (±7.9) |
| 6 | 64.4 (±1.7) | 56.0 (±2.8) | 81.1 (±7.1) | 71.5 (±3.4) |
| 7 | 65.6 (±0.9) | 58.0 (±3.7) | 80.6 (±8.8) | 73.0 (±7.1) |
| 8 | 67.2 (±4.1) | 54.4 (±1.7) | 84.8 (±17.1) | 71.9 (±5.2) |
| 9 | 73.2 (±3.0) | 59.6 (±5.0) | 107.0 (±22.8) | 75.2 (±10.2) |
| 10 | 62.8 (±3.0) | 55.2 (±4.4) | 77.0 (±4.4) | 70.3 (±6.1) |
| 11 | 67.6 (±2.6) | 60.4 (±3.9) | 86.9 (±4.5) | 76.0 (±10.3) |
| 12 | 61.2 (±1.8) | 44.0 (±0) | 74.0 (±6.0) | 63.1 (±2.4) |
| 13 | 64.0 (±1.4) | 50.4 (±4.3) | 76.0 (±4.9) | 66.5 (±6.5) |
Total mean (±SD) beam-flow angles: without slanted gel pads: 66.7° (±4.2), with slanted gel pads: 56.1° (±5.8), P value: 0.001; Total mean (±SD) PSVs: without slanted gel pads: 92.0 (±17.4) cm/s, with slanted gel pads: 76.9 (±10.9) cm/s, P value: 0.001