Progress in Medical Physics

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Table. 1.

Table. 1.

Measured reference dose rate in water using TRS-398 dosimetry protocol

Condition Value
Phantom PTW-T41023 water phantom
SSD (cm) 100
Measured depth, d (g/cm2) 1.0
Pulse width (µs) 2.5
Pulse frequency (Hz) 100
Measuring time (s) 1.0
Ion-chamber PTW-Advanced Markus
Corrected M (nC/s) 5.902
NDWQ 0 (Gy/nC) 1.308
kQQ 0 0.927
D(d) (Gy/s) 7.156
PDD (d) (%) 94.5
d max (g/cm2) 0.7
D(d max) (Gy/s) 7.573
Pulse per dose (Gy) at d max 0.0757
Relative uncertainty (%) at 1σ 1.4

SSD, source to surface distance.

Progress in Medical Physics 2020;31:9-19 https://doi.org/10.14316/pmp.2020.31.2.9
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