skull and facial bones

Question 1

OM POJECTION

Answer 1

PATIENT ERECT WITH CHIN AGAINST THE IR
orbeomeatal baseline raised 45 degrees and MSP should be perpendicular to the IR

centring at the external occipital pretuberence 100cm ffd

Question 2

OM 30

Answer 2

same as OM but BEAM IS AIMED DOWNWARDS 30 DEGREES

Question 3

lateral Skull

Answer 3

patient erect with affected side of skull in contact with the image receptor. MSP parralelk to IR
centrig between the glabella and the external occiopital pretuberence

Question 4

Occipito-frontal

Answer 4

patient erect with nose and forehead in contact with the image receptor
MSP and orbeomatale baseline perpendicular to the image receptor
centring at the occiput so the beam emerges at the glabella

Question 5

reverse townes and townes

Answer 5

for a townes view angle the tube down 30 degrees and for a reverese townes, angle the tube upwards 30 degrees