positioning for skull and facial bones
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| What is the IR for lateral projection of the skullp | 10x 12
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| what plane is parrallel to the IR for lateral projection of the skull | mid saggital
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| What line is parrallel to the IR forlateral projection of the skull | IOML
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| Respiration of skullW | suspend
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| where does the cr enter for lateral projection of the skull | 2 " SUPERIOR TO EAM
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| Whatis seen in profile in the lateral prheojection of the skull a) mastoid b)sella turcica c) clinoid process | sella turcica
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| For a trauma lateral skull do a | dorsal decubitus in supine lateral
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| The PA axial position is called the ___ method | caldwell
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| what two parts of the face are placed on the table for the PA axial position of skull | nose and forehead
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| for the caldwell what line is perp to IR | OML
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| central ray exits the ______ fro the caldwell | nasion
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| for thhee PA projection of the skull when the frontal lobe is of interest the cr exits at the | nasion
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| angle for the caldwell is | 15 derees caudad
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| to show the superior orbitaql fissures direct the centrqal rqay through the ______ at an angle of | mid orbits
20 -25 degrees caudad
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| to show the rotundum forqamina in a pa axial projection, central ray direts to the ______ at an angle of _________ | nasion, 25 30
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| where shold the petrous ridges be seen in a caldwell projection | lower 1/3 of orbits
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| if you angles 10 degrees then the petrous ridges would be where | they would be half way in orbit
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| if you angle more the petrous ridges go | down below the orbits
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| what is perp with IR for the caldwe3ll | oml
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| what two strx of skull shold be shown in pa axail projecti | crista galli and superior orbital fissure
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| the AP axial projection is called the ___ method | towns
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| what is perp to Ir for townes method | OML
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| If you want the IOML to bw perp to the IR them use a ___ angle for a ap axial projectionof the skull | 7degrees
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| what is cr for townes rmethod | 30 degrrees caudal
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| what shold be symmetric on the townes method of skull | petrous ridges
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| what two structures shhe ould be in the foramen magnum for a townes method of the skull | dorsum sella and posterior clinoid process
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| the dorsum sella looks like a ____ tail in the foramen magnum | whale
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| if the whale tale is above the foramen magnum then you a) havent angled enough b) anglesd too much | didnt angle enough
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| Parietoorbital oblique projection is called the ___ method | rhese
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| for the parietoorbital obliue proection, place the ________ on the table | zygomsa, nose and chin
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| the midsaggital plane should form an angle of ____ to the IR | 53 deg
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| the central ray enter where for the parietoorbital oblique projection | 1 " superior and posterior to the tea
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| where does the cr exit fo r the parietoorbital oblique projection | affected orbit closest to ir
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| where is the optic foramen located for the parietoorbital oblique projection of skull | inferior and lateral quadrqant of the projected orbit
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| for the parietoorbital oblique projection the optic canal end is seen | on end
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| what is perpindicualr to the IR for the parieto oblique projection of the skull | AML
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| if its lateral deviation then its ? a) incorrect rotation b) incorrexrt angle AML | incorrect rotation
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| if its longitudinal deviation then a) incorrect rotation b) incorrexrt angle AML | incorrect angle AML
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| the messy side of the parietoorbital oblique projection is thed | medial side the sinuses
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| the orbitoparietal oblique projectiion is called the ________ metho | reverse rhese method
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| what is the ir size for the lateral projection of the facial bones | 8x10
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| what is parralles with the IR for the lateral projectionof the facial bones | IOML
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| whats perp with the IR fo the lateral projectionof the facial bones | Interpupillar line
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| there should be no rotation of ________ for the lateral projectionof the facial bones | sela turcica
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| where does central ray enter for the lateral projectionof the facial bones | alfway between the outer canthus and EAM
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| collimate down to a ______ for the lateral projectionof the facial bones | 6x10
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| what bone should be in the center for the lateral projectionof the facial bones | zygomatic bone
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| what should be almost superimposed fo rthe lateral projectionof the facial bones | mandibula rami
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| the _______ should be superimposed for the lateral projectionof the facial bones | orbital roofs
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| the waters method is _________ projection | paritoancanthial projection of the facial bones
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| what do you place on the IR for the paritoancanthial projection of the facial bones | tip of chin
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| the nose is about ___ inches in from to IR for the paritoancanthial projection of the facial bones | 3/4
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| OML form a ____ degree angle with IR for the paritoancanthial projection of the facial bones | 37
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| ___ is perpindicual fo rthe paritoancanthial projection of the facial bones | MSP
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| the _____ is almost perpindicular to the IR for the paritoancanthial projection of the facial bones | MML
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| center the IR at the level of the _____ for the paritoancanthial projection of the facial bones | acancthion
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| the waters method shows what three structures | orbits, maxillae and zygomtic acrches
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| where are the petrous ridges projected for the paritoancanthial projection of the facial bones | immidiately below the maxillary sinus
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| 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
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| Forthe lateral projection of the nasal bonesh what plane is perp with the IR | interpupillary line
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| for the lateral projection of the nasal bones what size cassete | 8x10 cw for two exposures on the same cassette
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| w is perp with the IR fo rthe lateral projection of the nasal bones | interpupilaary line
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| wht is parrallel with tthe IR for the lateral projection of the nasal bones | IOML
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| what two strucxtures are demonstrated on the lateral projection of the nasal bone | anterior nasal spine and frontonasal suture
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| the smv stands for | submentovertical projection of the zygomatic arches
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| what touches the IR for the submentovertical projection of the zygomatic arches | apex of the head
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| what is parralles with the IR or the submentovertical projection of the zygomatic arches | IOML
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| what plane is perp with the submentovertical projection of the zygomatic archees | msp
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| for the submentovertical projection of the zygomatic arches, there shold be bilatera symetric images of the | zygomatic arches
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| where does cr enter for submentovertical projection of the zygomatic arches | mid throat and 1 inch posterior to the outer canthis
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| 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
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| wht is parrallel with tthe IR for the lateral projection of the nasal bones | IOML
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| what is parralles with the IR or the submentovertical projection of the zygomatic arches | IOML
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| what plane is perp with the submentovertical projection of the zygomatic archees | msp
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| for the submentovertical projection of the zygomatic arches, there shold be bilatera symetric images of the | zygomatic arches
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| where does cr enter for submentovertical projection of the zygomatic arches | mid throat and 1 inch posterior to the outer canthis
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| 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
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| how do you position the head? | rotate msp 15 degrees toward affeted side
tilt head 15 degrees away fromthe affected side
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| center the _________ to the film for the tangential zygomatic arch | zygomatic arch
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| what is the transverse centering for the pa projetoin of the mandible | level of lips
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| what are threeparts to the mandible | body, symphysis
ramus
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| where does the cr exit for the PA projection of the mandible | acanthion
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| 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
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| what is the central ray angulation for the axiolateral oblique projectoin of the mandible? | 25 degrees cephalad
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| where should the central ray be directed for the axiolateral oblique projectoin of the mandible | to the part of the mandible of interest
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| 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
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| 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
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| what line is perp to the IR for the axiolateral oblique projectoin of the mandible? | interpupillary line
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| the goal of the axiolateral oblique projectoin of the mandible is to place the area of interest on the mandible ________ with the IR | parrallel
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| for the axiolateral oblique projectoin of the mandible central ray wil exit ______ | area of interes
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| for the axiolateral oblique projectoin of the mandible when the ramus is of interest, the cr enters at the | unaffected side of gonion
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| For the AP axial projection (towns medthod) the transverse centering is | midway between the tMJ and gonione
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| what are the 4 paranasal sinuses | frontal
sethmoidal
sphenoidal
maxillary
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| what is the large3st sinus | maxiallary
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| what is most posterior sinus | sphenoidal sinus
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| what is most superior sinus | frontal
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| what is 2nd largest sinus? | frontalf
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| which sinusis usually developed at birth? | maxilary
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| when are the other sinuses distinguishable | 6 or 7
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| For the lateral projection of the sinuses, what plane and what line is parrallel | IOml, msp
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| what line is perp? | interpupillaryf
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| t/f for a lateral projection of the sinus all 4 sinus groups should be shown | true
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| what 2 sinuses are of primary interest on the lateral proj of the sinus?f | sphenoid and ethmoid
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| For the PA axial projection (caldwell method) of the sinuses which sinuses are of primary interest | frontal sinus
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| where should the petrous ridges be for the PA axial projection (caldwell method) of the sinuses | lower 1/3 of orbits
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| the parietoacanthia projection of the sinuses is used to demonstrate which sinuses | maxiallry sinus
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| the parietoacanthia projection of the sinuses is also used to demonstrate wich foramen? | foramen rotundum
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| The submentovertical (SMV) projection of the sinuses is used to dimonstrate which sinuses | ethmoidal and sphenoidal
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| wehre does the cr enter for The submentovertical (SMV) projection of the sinuses | Though the sella turcica
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| the CR shold be perp to the ___ for the The submentovertical (SMV) projection of sinuses | IOML
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| What line is perp to the IR forlateral projection of the skull | IOML
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| where does the central ray enter for the lateral projectionof the nasal bone | 1/2 inch distal to the nasion
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| which radiographic cranial position best demonstrate the sella turcica? | lateral
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| cranial sutures are ______ joints | fibrous
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| which exteranal landmark corresponds with the petrous ridge? | tea
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| list 3 classifications of the skull | mesocephalic, brachiocephalic, dolichocephalic
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| 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
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| which AP axial projection for sella turcica best visualizes the anterior clinoid processes? | 30 degree caudal to IOML
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| which projection best demostrate the foramen rotundum? | 25 – 30 PA axial
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| what type of CR is used if dorsum sellae and posteior clinoid are of interest? | 37 degree caudad
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| what does tmj stand for | temperomandibular joint
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