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# skull/ facial bone

### positioning for skull and facial bones

Question | Answer |
---|---|

What is the IR for lateral projection of the skullp | 10x 12 |

what plane is parrallel to the IR for lateral projection of the skull | mid saggital |

What line is parrallel to the IR forlateral projection of the skull | IOML |

Respiration of skullW | suspend |

where does the cr enter for lateral projection of the skull | 2 " SUPERIOR TO EAM |

Whatis seen in profile in the lateral prheojection of the skull a) mastoid b)sella turcica c) clinoid process | sella turcica |

For a trauma lateral skull do a | dorsal decubitus in supine lateral |

The PA axial position is called the ___ method | caldwell |

what two parts of the face are placed on the table for the PA axial position of skull | nose and forehead |

for the caldwell what line is perp to IR | OML |

central ray exits the ______ fro the caldwell | nasion |

for thhee PA projection of the skull when the frontal lobe is of interest the cr exits at the | nasion |

angle for the caldwell is | 15 derees caudad |

to show the superior orbitaql fissures direct the centrqal rqay through the ______ at an angle of | mid orbits 20 -25 degrees caudad |

to show the rotundum forqamina in a pa axial projection, central ray direts to the ______ at an angle of _________ | nasion, 25 30 |

where shold the petrous ridges be seen in a caldwell projection | lower 1/3 of orbits |

if you angles 10 degrees then the petrous ridges would be where | they would be half way in orbit |

if you angle more the petrous ridges go | down below the orbits |

what is perp with IR for the caldwe3ll | oml |

what two strx of skull shold be shown in pa axail projecti | crista galli and superior orbital fissure |

the AP axial projection is called the ___ method | towns |

what is perp to Ir for townes method | OML |

If you want the IOML to bw perp to the IR them use a ___ angle for a ap axial projectionof the skull | 7degrees |

what is cr for townes rmethod | 30 degrrees caudal |

what shold be symmetric on the townes method of skull | petrous ridges |

what two structures shhe ould be in the foramen magnum for a townes method of the skull | dorsum sella and posterior clinoid process |

the dorsum sella looks like a ____ tail in the foramen magnum | whale |

if the whale tale is above the foramen magnum then you a) havent angled enough b) anglesd too much | didnt angle enough |

Parietoorbital oblique projection is called the ___ method | rhese |

for the parietoorbital obliue proection, place the ________ on the table | zygomsa, nose and chin |

the midsaggital plane should form an angle of ____ to the IR | 53 deg |

the central ray enter where for the parietoorbital oblique projection | 1 " superior and posterior to the tea |

where does the cr exit fo r the parietoorbital oblique projection | affected orbit closest to ir |

where is the optic foramen located for the parietoorbital oblique projection of skull | inferior and lateral quadrqant of the projected orbit |

for the parietoorbital oblique projection the optic canal end is seen | on end |

what is perpindicualr to the IR for the parieto oblique projection of the skull | AML |

if its lateral deviation then its ? a) incorrect rotation b) incorrexrt angle AML | incorrect rotation |

if its longitudinal deviation then a) incorrect rotation b) incorrexrt angle AML | incorrect angle AML |

the messy side of the parietoorbital oblique projection is thed | medial side the sinuses |

the orbitoparietal oblique projectiion is called the ________ metho | reverse rhese method |

what is the ir size for the lateral projection of the facial bones | 8x10 |

what is parralles with the IR for the lateral projectionof the facial bones | IOML |

whats perp with the IR fo the lateral projectionof the facial bones | Interpupillar line |

there should be no rotation of ________ for the lateral projectionof the facial bones | sela turcica |

where does central ray enter for the lateral projectionof the facial bones | alfway between the outer canthus and EAM |

collimate down to a ______ for the lateral projectionof the facial bones | 6x10 |

what bone should be in the center for the lateral projectionof the facial bones | zygomatic bone |

what should be almost superimposed fo rthe lateral projectionof the facial bones | mandibula rami |

the _______ should be superimposed for the lateral projectionof the facial bones | orbital roofs |

the waters method is _________ projection | paritoancanthial projection of the facial bones |

what do you place on the IR for the paritoancanthial projection of the facial bones | tip of chin |

the nose is about ___ inches in from to IR for the paritoancanthial projection of the facial bones | 3/4 |

OML form a ____ degree angle with IR for the paritoancanthial projection of the facial bones | 37 |

___ is perpindicual fo rthe paritoancanthial projection of the facial bones | MSP |

the _____ is almost perpindicular to the IR for the paritoancanthial projection of the facial bones | MML |

center the IR at the level of the _____ for the paritoancanthial projection of the facial bones | acancthion |

the waters method shows what three structures | orbits, maxillae and zygomtic acrches |

where are the petrous ridges projected for the paritoancanthial projection of the facial bones | immidiately below the maxillary sinus |

the PA axial proojection of the facial bone is also called the waters and it is exactly the same as the waters except | use an 8x10 lw |

Forthe lateral projection of the nasal bonesh what plane is perp with the IR | interpupillary line |

for the lateral projection of the nasal bones what size cassete | 8x10 cw for two exposures on the same cassette |

w is perp with the IR fo rthe lateral projection of the nasal bones | interpupilaary line |

wht is parrallel with tthe IR for the lateral projection of the nasal bones | IOML |

what two strucxtures are demonstrated on the lateral projection of the nasal bone | anterior nasal spine and frontonasal suture |

the smv stands for | submentovertical projection of the zygomatic arches |

what touches the IR for the submentovertical projection of the zygomatic arches | apex of the head |

what is parralles with the IR or the submentovertical projection of the zygomatic arches | IOML |

what plane is perp with the submentovertical projection of the zygomatic archees | msp |

for the submentovertical projection of the zygomatic arches, there shold be bilatera symetric images of the | zygomatic arches |

where does cr enter for submentovertical projection of the zygomatic arches | mid throat and 1 inch posterior to the outer canthis |

how much do you angle for the submentovertical projection of the zygomatic arches | you dont know it depends on how mch they can tilt toheir head has to be perp to the IOML |

wht is parrallel with tthe IR for the lateral projection of the nasal bones | IOML |

what is parralles with the IR or the submentovertical projection of the zygomatic arches | IOML |

what plane is perp with the submentovertical projection of the zygomatic archees | msp |

for the submentovertical projection of the zygomatic arches, there shold be bilatera symetric images of the | zygomatic arches |

where does cr enter for submentovertical projection of the zygomatic arches | mid throat and 1 inch posterior to the outer canthis |

how much do you angle for the submentovertical projection of the zygomatic arches | you dont know it depends on how mch they can tilt toheir head has to be perp to the IOML |

how do you position the head? | rotate msp 15 degrees toward affeted side tilt head 15 degrees away fromthe affected side |

center the _________ to the film for the tangential zygomatic arch | zygomatic arch |

what is the transverse centering for the pa projetoin of the mandible | level of lips |

what are threeparts to the mandible | body, symphysis ramus |

where does the cr exit for the PA projection of the mandible | acanthion |

For the axiolateral oblique projectoin of the mandible, which part is of interest when the rami is parrallel and the chin is extended and head in a true lateral position ramus body symphysis | ramus |

what is the central ray angulation for the axiolateral oblique projectoin of the mandible? | 25 degrees cephalad |

where should the central ray be directed for the axiolateral oblique projectoin of the mandible | to the part of the mandible of interest |

when the patyients head is rotated 30 degrees toward the IR the the part of interest of the mandible for a axiolateral oblique projectoin of the mandible is the? | body |

when the patyients head is rotated 45 degrees toward the IR the the part of interest of the mandible for a axiolateral oblique projectoin of the mandible is the? | symphysis |

what line is perp to the IR for the axiolateral oblique projectoin of the mandible? | interpupillary line |

the goal of the axiolateral oblique projectoin of the mandible is to place the area of interest on the mandible ________ with the IR | parrallel |

for the axiolateral oblique projectoin of the mandible central ray wil exit ______ | area of interes |

for the axiolateral oblique projectoin of the mandible when the ramus is of interest, the cr enters at the | unaffected side of gonion |

For the AP axial projection (towns medthod) the transverse centering is | midway between the tMJ and gonione |

what are the 4 paranasal sinuses | frontal sethmoidal sphenoidal maxillary |

what is the large3st sinus | maxiallary |

what is most posterior sinus | sphenoidal sinus |

what is most superior sinus | frontal |

what is 2nd largest sinus? | frontalf |

which sinusis usually developed at birth? | maxilary |

when are the other sinuses distinguishable | 6 or 7 |

For the lateral projection of the sinuses, what plane and what line is parrallel | IOml, msp |

what line is perp? | interpupillaryf |

t/f for a lateral projection of the sinus all 4 sinus groups should be shown | true |

what 2 sinuses are of primary interest on the lateral proj of the sinus?f | sphenoid and ethmoid |

For the PA axial projection (caldwell method) of the sinuses which sinuses are of primary interest | frontal sinus |

where should the petrous ridges be for the PA axial projection (caldwell method) of the sinuses | lower 1/3 of orbits |

the parietoacanthia projection of the sinuses is used to demonstrate which sinuses | maxiallry sinus |

the parietoacanthia projection of the sinuses is also used to demonstrate wich foramen? | foramen rotundum |

The submentovertical (SMV) projection of the sinuses is used to dimonstrate which sinuses | ethmoidal and sphenoidal |

wehre does the cr enter for The submentovertical (SMV) projection of the sinuses | Though the sella turcica |

the CR shold be perp to the ___ for the The submentovertical (SMV) projection of sinuses | IOML |

What line is perp to the IR forlateral projection of the skull | IOML |

where does the central ray enter for the lateral projectionof the nasal bone | 1/2 inch distal to the nasion |

which radiographic cranial position best demonstrate the sella turcica? | lateral |

cranial sutures are ______ joints | fibrous |

which exteranal landmark corresponds with the petrous ridge? | tea |

list 3 classifications of the skull | mesocephalic, brachiocephalic, dolichocephalic |

what evidence on AP axial (twn) radiograph indicates whether the correct CR angle and correct head flexion were used? | Dorsum sellae, posterior clinoids on foramen magnum |

which AP axial projection for sella turcica best visualizes the anterior clinoid processes? | 30 degree caudal to IOML |

which projection best demostrate the foramen rotundum? | 25 – 30 PA axial |

what type of CR is used if dorsum sellae and posteior clinoid are of interest? | 37 degree caudad |

what does tmj stand for | temperomandibular joint |

Created by:
PIKFUR