Quantitative echography--the basis of tissue differentiation.
D003937:Diagnosis, Differential; D005123:Eye / Q000473:pathology; D005134:Eye Neoplasms / Q000473:pathology*; D006801:Humans; D009915:Orbit / Q000473:pathology; D009918:Orbital Neoplasms / Q000473:pathology*; D014463:Ultrasonography / Q000295:instrumentation / Q000379:methods*