Assertion: anterior nasal spine | /r/HasProperty | ans
Facets:
Source sentences:
text: Anterior boundary: line connecting the anterior nasal spine (ANS) and the apex of the nasal bone; posterior boundary: line extending from sella (S) to posterior nasal spine (PNS); superior boundary: line connecting basion or the highest point on the nasal bone 1 mm inferior to the edge of the field of view and S; and inferior boundary: line extending from ANS to PNS.