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ACDS - National Datasets

The national data sets show the dose variation as measured by the ACDS in audits to date excluding follow up audits.

The data for each level is shown in two formats: the individual data points are shown and the averages with error bars representing two standard deviations. The darker green area represents the Pass (Optimal) threshold and the lighter green is Pass (Action). The white area is Out of Tolerance.

Level I Photons

Graph showing results of 642 measurements of photon beams from the level one audit. There are 319 measurements of 6 MV beams with a maximum of 3.9 % and a minimum of -4.1 % dose variation. There are 186 measurements of 10 MV beams with a maximum of 4.3 % and a minimum of -4.1 % dose variation. There are 15 measurements of 15 MV beams with a maximum of 1.5 % and a minimum of -2.7% dose variation. There are 122 measurements of 18 MV beams with a maximum of 5.2 % and a minimum of -3.5 % dose variation
Graph showing results of 642 measurements of photon beams from the level one audit. The average of the 6 MV beams was 0.4 % with 2 sigma 2.7 %. The average of the 10 MV beams was 0.4 % with 2 sigma 2.9 %. The average of the 15 MV beams was -0.5% with 2 sigma 2.6%. The average of the 18 MV beams was 0.2 % with 2 sigma 3.1 %

Level I Electrons

Graph showing results of 1024 measurements of electron beams from the level one audit. There are 212 measurements of 6 MeV beams with a maximum of 8.0 % and a minimum of -5.9 % dose variation. There are 15 measurements of 8 MeV beams with a maximum of 2.8 % and a minimum of -4.1 % dose variation. There are 198 measurements of 9 MeV beams with a maximum of 4.1 % and a minimum of -5.0 % dose variation. There are 17 measurements of 10 MeV beams with a maximum of 3.1 % and a minimum of -3.7 % dose variation. There are 213 measurements of 12 MeV beams with a maximum of 4.4 % and a minimum of -4.5 % dose variation. There are 111 measurements of 15 MeV beams with a maximum of 3.7 % and a minimum of -5.3 % dose variation. There are 88 measurements of 16 MeV beams with a maximum of 3.8 % and a minimum of -2.5 % dose variation. There are 81 measurements of 18 MeV beams with a maximum of 3.8 % and a minimum of -5.9 % dose variation. There are 89 measurements of 20 MeV beams with a maximum of 3.8 % and a minimum of -4.2 % dose variation
Graph showing results of 1024 measurements of electron beams from the level one audit. The average of the 6 MeV beams was -0.1 % with 2 sigma 3.6 %. The average of the 8 MeV beams was -0.7 % with 2 sigma 4.2 %. The average of the 9 MeV beams was -0.2% with 2 sigma 2.9%. The average of the 10 MeV beams was -0.5 % with 2 sigma 3.6 %. The average of the 12 MeV beams was -0.2 % with 2 sigma 2.9 %. There average of the 15 MeV beams was -0.1 % with 2 sigma 3.5 %. The average of the 16 MeV beams was -0.2 % with 2 sigma 2.3 %. The average of 18 MeV beams was -0.1 % with 2 sigma 3.4 %. The average of 20 MeV beams was 0.1 % with 2 sigma 2.6 %

Level 1b Photons

Graph showing results of 198 measurements of photon beams from the level one B audit. There are 74 measurements of 6 MV beams with a maximum of 1.4 % and a minimum of -1.3 % dose variation. There are 53 measurements of 10 MV beams with a maximum of 1.5 % and a minimum of -1.5 % dose variation. There are 4 measurements of 15 MV beams with a maximum of 0.5 % and a minimum of –1.0% dose variation. There are 34 measurements of 18 MV beams with a maximum of 1.1 % and a minimum of -1.0 % dose variation. There are 17 measurements of 6FFF beams with a maximum of 1.1 % and a minimum of -1.3 % dose variation. There are 16 measurements of 10FFF bemas with a maximum of 1.2 % and a minimum of 1.6 % dose variation
Graph showing results of 198 measurements of photon beams from the level one audit. The average of the 6 MV beams was -0.1 % with 2 sigma 1.1 %. The average of the 10 MV beams was -0.1 % with 2 sigma 1.2 %. The average of the 15 MV beams was -0.2% with 2 sigma 1.5 %. The average of the 18 MV beams was -0.1 % with 2 sigma 1.0 %. The average of the 6FFF beams is -0.5 % with 2 sigma 1.1 %. The average of the 10FFF beams is -0.4 % with 2 sigma 1.4 %

Level Ib Electrons

Graph showing results of 328 measurements of electron beams from the level one audit. There are 7 measurements of 4 MeV beams with a maximum of 1.2 % and a minimum of -1.3 % dose variation. There are 67 measurements of 6 MeV beams with a maximum of 3.2 % and a minimum of -3.6 % dose variation. There are 5 measurements of 8 MeV beams with a maximum of 2.3 % and a minimum of -0.6 % dose variation. There are 64 measurements of 9 MeV beams with a maximum of 2.6 % and a minimum of -3.5 % dose variation. There are 4 measurements of 10 MeV beams with a maximum of 1.8 % and a minimum of -1.0 % dose variation. There are 68 measurements of 12 MeV beams with a maximum of 2.2 % and a minimum of -2.8 % dose variation. There are 38 measurements of 15 MeV beams with a maximum of 1.7% and a minimum of -1.9 % dose variation. There are 27 measurements of 16 MeV beams with a maximum of 1.4 % and a minimum of -2.6 % dose variation. There are 22 measurements of 18 MeV beams with a maximum of 1.3 % and a minimum of -2.3 % dose variation. There are 26 measurements of 20 MeV beams with a maximum of 1.8 % and a minimum of -1.1 % dose variation
Graph showing results of 328 measurements of electron beams from the level one audit. The average of the 4 MeV beams was -0.4 % with 2 sigma 1.5 %. The average of the 6 MeV beams was 0.3 % with 2 sigma 2.3 %. The average of the 8 MeV beams was 0.6 % with 2 sigma 2.4 %. The average of the 9 MeV beams was 0.2 % with 2 sigma 1.9 %. The average of the 10 MeV beams was 0.4 % with 2 sigma 2.7 %. The average of the 12 MeV beams was 0.2 % with 2 sigma 1.7 %. There average of the 15 MeV beams was 0.3 % with 2 sigma 1.8 %. The average of the 16 MeV beams was –0.1 % with 2 sigma 1.8 %. The average of 18 MeV beams was 0.1 % with 2 sigma 1.8 %. The average of 20 MeV beams was 0.3 % with 2 sigma 1.7 %

Level II 3DCRT

Graph showing individual data points representing the dose variation measured in cases 2 to 12 in all level 2 audits conducted to date
Graph showing the average and 2 sigma for the dose variation measured in cases 2 to 12 in all level 2 audits conducted to date

 

Level III

Graph showing individual data points representing the dose variation measured in cases 1 to 4 in all level 3 audits conducted to date. Top of Page