positioning of sinuses, orbit, mandible, TMJ

upright

what position do all paranasal sinus need to be in to demonstrate air-fluid levels

MSP

what plane is parallel to the IR for the Paranasal Sinuses Lateral Projection

IP

what line is perpendicular to the IR for the Paranasal Sinuses Lateral Projection

Horizontally

how is the IOML positioned to ensure proper extension of head for the Paranasal Sinuses Lateral Projection

horizontal

how is the CR positioned for the Paranasal Sinuses Lateral Projection

½ to 1 inch posterior to outer canthus

where does the CR enter for the Paranasal Sinuses Lateral Projection

collimation for the Paranasal Sinuses Lateral Projection

include all sinuses and mandible can be clipped

evaluation criteria for the Paranasal Sinuses Lateral Projection

all 4 sinuses included, sphenoid best demonstrated, air fluid levels, sella turcica in profile, superimposed orbital roofs and mandibular rami

15

what angle is the OML at with the vertical IR for the Frontal and Anterior Ethmoid Sinuses PA Axial Projection Caldwell Method

nose

What body part should be touching the IR for the Frontal and Anterior Ethmoid Sinuses PA Axial Projection Caldwell Method

nasion

where does the CR exit for the Frontal and Anterior Ethmoid Sinuses PA Axial Projection Caldwell Method

sinus area only

collimation Frontal and Anterior Ethmoid Sinuses PA Axial Projection Caldwell Method

evaluation criteria for Frontal and Anterior Ethmoid Sinuses PA Axial Projection Caldwell Method

Frontal sinuses lying about the frontonasal suture, Anterior Ethmoidal air cells lying above petrous ridges on either side of nasion, Sphenoid sinuses seen through nasal fossa below ethmoids, Air fluid level (if present)

lower 1/3 of orbit

where are the petrous ridges for the Frontal and Anterior Ethmoid Sinuses PA Axial Projection Caldwell Method