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. 2016 Nov 8;17(6):179–188. doi: 10.1120/jacmp.v17i6.6153

Table 1.

Gamma analysis of film measurements compared to TPS dose calculations. Gamma criteria are 3% threshold within 1 mm distance

Pixel Pass Rate(%)
Material Control Standard Extended
Film Position Relative to Metal Sample 0.5 cm Pasterior
Al Rod 97.7 97.7 99.9
Brass Mesh 99.9 0.2 97.6
CoCr Rod 95.2 99.4 100
Cu Sheet 78.2 55.9 95.8
Superflab (no metal) 100 100 100
SS Sheet 100 59.8 99.9
Steel Rod 94.2 99.8 99.6
Steel Sheet 99.9 46.5 99.6
2.5 cm Posterior
Al Rod 100 100 99.8
Brass Mesh 99.3 0.6 99.1
CoCr Rod 96.3 100 99.8
Cu Sheet 100 69.3 100
Superflab (no metal) 98.9 98.9 99.4
SS Sheet 98.6 39.0 99.9
Steel Rod 94.9 99.9 99.4
Steel Sheet 99.3 49.9 100