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xray boards

skull questoins

QuestionAnswer
which view will best demonstrate the maxillary sinuses? parietocanthial aka "water's method"
lateral deviation of the nasal septum may be best demonstrated in which position? parietocanthial aka "water's method"
if the patient's zygomatic arch has been depressed, or the pt has flat cheekbones, how can you modify the SMV projection? rotate the pt's head 15 degrees towards the side being examined.
is the MSP parrallel or perp for an exact PA of the skull parrallel
a true lateral position of the skull uses what principles? interpupillary line perp to IR IOML parrallel to transverse axis of IR
the SMV oblique axial projection for the zygo arches requires the skull be rotated how many degrees? 15d towards the affected side
what should be visualized through the foramen magnum in the AP axial "Grashey" of the skull for the occipital bone? * posterior clinoid prcesses * dorsum sella
PA axial projection of the skull "Caldwell" *CR caudad to the OML *petrous pyramids are projected into the lower third of the orbits *frontal sinuses visualized
what do we use the Caldwell (PA axial skull) view for? demo the frontal and ethmoid bones and the frontal and ethmoidal sinuses
how do we angle the CR for a Caldwell of the skull? 15d caudad to OML
in the Rhese method of the optical canal, the MSP nd the CR form what angle? 37d the MSP should form a 53d angle with the film
Incorrect rotation of the MSP in the Rhese method of the optical canal results in lateral displacement
incorrect positioning of the baseline in the Rhese methos results in longitudinal displacement of the optic canal
Which of the following skull positions will demonstrate the cranial base, sphenoidal sinuses, atlas, and odontoid process? SMV
Created by: jenorton1