TY  - RPRT
TI  - "Density mask". An objective method to quantitate emphysema using computed tomography.
AU  - N L Müller
AU  - C A Staples
AU  - R R Miller
AU  - R T Abboud
PY  - 1988
DO  - 10.1378/chest.94.4.782
UR  - https://pubmed.ncbi.nlm.nih.gov/3168574/
ID  - 3168574
ER  -