5.2. Penumbral width comparison between reference film measurements and various diode detectors
5.2.1. Penumbral width comparison between EDR2 radiographicfilm and various diode detectors
Table 5.2.1 presents the penumbral width (80-20%)using EDR2 radiographic film as a measured reference value to compare with penumbral width measured byPhoton diode detector (PFD), Edge detector and Stereotactic field diode detector (SFD)for field size of 1×1, 2×2, and 3×3 cm2at depths of 1.5,10 and 20 cm in water phantom with SSD = 100 cm.