Category Archives: Helium Dilution FRC

Resparameter, 1965

Developed by a team headed by Dr. John Cotes in the mid-1960’s.  Performed spirometry, helium dilution FRC and single-breath DLCO.  Design was acquired by P.K. Morgan and was manufactured and sold in Britain in the early 1970’s.  From The Lancet, September 18, 1965, pp. 573-575.  Reprinted in Inspire, 2018, Volume 19, No. 1, April as part of a memorial to Dr. Cotes.