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SKULL POSITIONING JG
| Question | Answer |
|---|---|
| CENTRAL RAY FOR A SUBMENTOVERTEX PROJECTION | 1 1/2 IN. INFERIOR TO MANDIBULAR SYMPHYSIS OR 3/4 INCH ANTERIOR TO EAM |
| PART POSITIONING FOR A SUBMENTOVERTEX PROJECTION | INFRAORBITOMEATAL LINE PARALLEL TO IMAGE RECEPTOR; MIDSAGITTAL PLANE PERPENDICULAR TO MID LINE OF GRID |
| BASE TECHNIQUE FOR A SUBMENTOVERTEX PROJECTION | 80 kVp 60 mAs |
| IF YOU WANTED TO DO A 25-30 DEGREE CAUDAL PA AXIAL SKULL WHAT DIFFERENT WOULD YOU SEE THAN ON A 15 DEGREE PA AXIAL SKULL | SUPRAORBITAL FISSURES AND THE FORAMEN ROTUNDUM |
| WHERE WILL THE CENTRAL RAY EXIT ON A PA CALDWELL | NASION |
| WHAT IS THE PART POSITIONING FOR A PA CALDWELL SKULL | BRIDGE OF NOSE AND FOREHEAD ON TABLE OR BUCKY; ORBITOMEATAL LINE PERPENDICULAR TO IMAGE RECEPTOR; MIDSAGITTAL PLANE TO IMAGE RECEPTOR |
| WHAT IS THE CENTRAL RAY ANGULATION FOR A PA CALDWELL | 15 DEGREES CAUDAL |
| HOW IS TILT DETERMINED FOR A LATERAL SKULL | SEPERATION OF THE SUPERIMPOSITION OF THE ORBITAL PLATES |
| HOW CAN YOU DETERMINE ROTATION ON A LATERAL SKULL | SEPERATION OF THE SUPERIMPOSITION OF THE MANDIBULAR RAMI, EAM, AND THE MASTOID PROCESS |
| WHAT IS THE CENTERING POINT FOR A LATERAL SKULL? | 2 INCHES ABOVE THE EAM |
| HOW DO YOU POSITION A LATERAL SKULL? | INTERORBITOMEATAL LINE PERPENDICULAR TO FRONT EDGE OF CASSETTE, MIDSAGITTAL LINE PARALLEL TO IR, INTERPUPILLARY LINE PERPENDICULAR TO CASSETTE |
| WHAT IS THE TECHNIQUE FOR A LATERAL SKULL? | 80 kVp @ 25 mAs |
| HOW WOULD YOU DETERMINE UNDERANGULATION OF THE CENTRAL RAY OF AN AP AXIAL TOWNE PROJECTION | DORSUM SELLAE PROJECTED ABOVE THE FORAMEN MAGNUM |
| HOW DO YOU DETERMINE OVERANGULATION OF THE CENTRAL RAY ON A AP AXIAL TOWNE PROJECTION? | ANTERIOR ARCH OF C1 WILL BE PROJECTED INTO FORAMEN MAGNUM |
| HOW DO YOU POSITION A PATIENT FOR AN AP AXIAL TOWNE PROJECTION | ORBITOMEATAL LINE IS PERPENDICULAR TO IR WITH A 30 DEGREE ANGULATION OR INFRAORBITOMEATAL LINE IN PERPENDICULAR WITH A 37 DEGREE ANGULATION CENTRAL RAY IS AT A POINT 2 1/2 INCHES ABOVE GLABELLA |
| WHAT IS THE TECHNIQUE FOR AN AP AXIAL TOWNE | 80 kVp @ 50 mAs |
| WHERE IS THE CENTRAL RAY ON AN AP AXIAL TOWNE PROJECTION | 2 1/2 INCHES ABOVE GLOBELLA |
| WHAT IS THE ANGULATION FOR AN AP AXIAL TOWNE PROJECTION | 30 DEGREES CAUDAL IF POSITIONED AT THE OML AND 37 DEGREES CAUDAL IF POSITIONED AT THE IOML |
| WHICH BONE IS IN PROFILE FOR THE AP TOWNE PROJECTION | OCCIPITAL BONE |
| WHICH BONE IS IN PROFILE FOR A LATERAL SKULL | LEFT OR RIGHT PARIETALS |
| WHICH BONE IS IN PROFILE ON A PA CALDWELL | FRONTAL BONE |
| HOW CAN YOU TELL THE DIFFERENCE IN AN AP OR PA SKULL? | ORBITS ARE MAGNIFIED ON AN AP |
| ON A SMV IF THE MANDIBULAR CONDYLES ARE IN OR BELOW THE PETROUS PYRAMIDS WHAT ERROR HAS OCCURED? | IMPROPER ALIGNMENT OF THE CENTRAL RAY AND THE INFRAORBITOMEATAL LINE |
| WHICH PROJECTION ALLOWS FOR THE VISUALIZATION OF ALL 4 BONES OF THE BASE OF THE SKULL | SUBMENTOVERTEX |
| WHERE SHOULD THE BOTTOM OF THE CASSETTE BE FOR A TRAUMA REVERSE CALDWELL | BELOW THE SHOULDER |
| WHERE ARE THE PETROUS RIDGES ON A 0 DEGREE PA SKULL | COMPLETELY FILL ORBITS |
| HOW DO YOU DETERMINE ROTATION ON A PA CALDWELL | SYMMETRY OF THE DISTANCE BETWEEN THE MID LATERAL MARGIN OF THE ORBITS TO THE LATERAL WALLS OF THE SKULL |
| WHERE ARE THE PETROUS PYRAMIDS ON A 25-30 DEGREES ANGULATION CALDWELL | BELOW THE ORBITS |
| WHERE ARE THE PETROUS PYRAMIDS WITH A 10 DEGREE ANGULATION ON A PA CALDWELL | LOWER 1/2 OF ORBITS |
| WHERE ARE THE PETROUS PYRAMIDS ON A 15 DEGREE ANGULATION PA CALDWELL | LOWER 1/3 OF ORBITS |
| WHEN DOING A LATERAL TRAUMA SKULL WHAT STEP IS IMPORTANT TO GET BACK OF SKULL | USE OF A SPONGE |
| HOW DO YOU DETERMINE TILT ON A LATERAL SKULL | SEPARATION OF ORBITAL PLATES |
| DETERMINE HOW YOU WOULD FIND ROTATION ON A LATERAL SKULL | SEPARATION OF MANDIBULAR RAMI, EAM, OR MASTOID PROCESS |
| HOW CAN YOU DETERMINE ROTATION FOR AN AP TOWNES PROJECTION | NARROWING OF DISTANCE BETWEEN PETROUS PYRAMID AND LATERAL WALL OF SKULL INDICATES ROTATION TO THAT SIDE |
| WHAT WILL BE PROJECTED INTO THE FORAMEN MAGNUM IF YOU OVERANGULATE ON A AP TOWNES PROJECTION | ANTERIOR ARCH OF C1 |
| WHERE WILL THE DORSUM SELLAE AND POSTERIOR CLINOIDS BE IF YOU DO NOT HAVE ENOUGH ANGULATION | PROJECTED ABOVE THE FORAMEN MAGNUM |
| TIPPING OR SLANTING OF THE MIDSAGITTAL PLANE LATERALLY | TILT |
| FIVE POTENTIAL POSITIONING ERRORS FOR SKULL RADIOGRAPHICALLY | ROTATION, TILT, OVER EXTENSION, OVERFLEXION, IMPROPER CR ANGULATION |
| kV RANGE FOR SKULL RADIOGRAPHY | 70-85 kV |
| CR FOR THE SUBMENTOVERTEX | 3/4 INCH ANTERIORLY TO THE EAM OR 1 1/2 INCHES BELOW MANDIBULAR SYMPHYSIS |
| PART POSITIONING FOR SUBMENTOVERTEX | INFRAORBITOMEATAL LINE PARALLEL TO IR AND CENTRAL RAY PERPENDICULAR TO IOML |
| TECHNIQUE FOR A SUBMENTOVERTEX PROJECTION | 80 kVp @ 60 mAs |
| IF YOU WANTED TO DO A 25-30 DEGREE CAUDAL PA AXIAL SKULL WHAT DIFFERENT WOULD YOU SEE THAN ON A 15 DEGREE | FORAMEN ROTUNDUM AND SUPRAORBITIAL FISSURES |
| WHERE WILL THE CENTRAL RAY ON A PA CALDWELL | NASION |
| HOW DO YOU POSITION FOR A PA CALDWELL SKULL | BRIDGE OF NOSE AND FOREHEAD ON TABLE WITH OML PERPENDICULAR TO IR |
| CENTRAL RAY ANGULATION FOR A PA CALDWELL PROJECTION | 15 DEGREE CAUDAL |
| HOW IS THE TILT DETERMINED FOR A LATERAL SKULL | SEPERATION OF ORBITAL PLATES |
Created by:
goldenj2003
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