Accurate measurement of plutonium, uranium and americium are particularly challenging when the lungs in question also contain depositions of higher energy nuclides such as 137Cs or 60Co. For more than 20 years Mirion has designed and fabricated the systems and components to meet this challenge. Mirion is constantly surveying technological advances that improve system ergonomics and detection capability. The 2270 Lung Counter is one of the company’s two resulting standard Lung Counting systems.