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Table 1 Collected planning parameters for the entire population of 395 collected QA deliveries

From: Analysis of clinical patient-specific pre-treatment quality assurance with the new helical tomotherapy platform, following the AAPM TG-218 report

 

Average ± SD

Range [min; max]

Dose/Fraction [cGy]

219.8 ± 62.6

[160.0; 500.0]

MF

1.68 ± 0.28

[1.10; 2.79]

Pitch

0.39 ± 0.06

[0.12; 0.48]

Gantry Period [s]

20.1 ± 7.3

[11.8; 52.8]

Total Treatment Time [s]

299.7 ± 141.0

[66.3; 1241.3]

TTDF [s/cGy]

1.41 ± 0.69

[0.36; 5.43]

min-LOT [ms]

18.2±1.1

[18.0; 36.4]

mean-LOT [ms]

236.3 ± 82.7

[57.8; 617.1]

max-LOT [ms]

391.4 ± 144.0

[123.2; 1034.2]

SD-LOT [ms]

107.9 ± 44.2

[21.1; 316.1]

Couch speed [mm/s]

0.56 ± 0.20

[0.11; 1.84]

Couch travel distance [mm]

160.2 ± 88.9

[31.1; 895.2]

FW (10 mm/25 mm/50 mm)

2.1%/92.0%/5.9%