option "input" i "Input CT image filename" string yes
option "patient" p "Input patient mask filename" string yes
option "patientBG" - "Patient Background" int default="0" no
+option "afdb" a "Output Anatomical Feature DB (Carina position)" string no
option "output" o "Output lungs mask filename" string yes
option "outputTrachea" t "Output trachea mask filename" string no