| 释义 |
PA projection PA pro·jec·tionthe standard frontal chest film projection; radiographic skull projection with the petrous ridge superimposed on the orbits. Synonym(s): posteroanterior projection PA pro·jec·tion (prŏ-jek'shŭn) A radiographic study in which x-rays travel from posterior to anterior.
Synonym(s): posteroanterior projection. |