The proper patient and part position for a PA skull is:
a. Patient in semi-prone position; midsagittal plane parallel to film; IOML
perpendicular to front edge of cassette; midpoint between the EOP and
the glabella is over the midline of the table.
b. Patient in prone position (nose-forehead position; meidsagittal plane
perpendicular and over the midline of the film; orbitomeatal line perpendicular
to the film.
Patient in supine position (posterior skull against table top); midsagittal plane
perpendicular and over the midline of the film; OML perpendicular to the film.
d. Patient prone (nose-forehead position); midsagittal plane perpendicular and
over midline of film; infraorbitomeatal line perpendicular to film.
What is centered for a lateral skull?
a. Midsagittal plane, 2.5 inches above the superciliary arch.
A point 2 inches superior to the EAM.
What is perpendicular to the film for a PA (Caldwell) skull?