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Table 5 Gamma index (3%/3 mm)-based passing rates for transit dose measured with EPID and an anthropomorphic phantom following selection of the wrong fields instead of field 1 of patient 2

From: Feasibility study on the verification of actual beam delivery in a treatment room using EPID transit dosimetry

Fields

Patient number

Patient 1 (%)

Patient 2 (%)

Patient 3 (%)

Patient 4 (%)

Field 1

20.5

-

32.4

38.4

Field 2

24.4

35.9

25.5

35.5

Field 3

31.0

49.7

30.1

49.3

Field 4

18.9

32.9

16.9

29.0

Field 5

35.0

37.8

14.9

21.6

Field 6

22.1

32.2

15.6

31.5

Mean

25.3

37.7

22.6

34.2