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1st Commandment
Explained
Metric for γ-analysis
o
“Overreliance on the insensitive metric is
❖
counterproductive to quality improvement and
❖
can lead to the sense of complacency among the clinical physicists.”
o
“IMRT and VMAT commissioning, along with product validation, would
benefit from the retirement of the 3%/3 mm passing rates as a primary
metric of performance, and
❖
the adoption instead of tighter tolerances, more diligent
diagnostics, and more thorough analysis.”
Med Phys 2013 – Nelms et al
Warsaw 2017
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