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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
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