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22 Cards in this Set
- Front
- Back
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Essential projections for the Temporal Bone
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Axiolateral Oblique (Modified Law)
Axiolateral Oblique (Stenvers) Axiolateral Oblique (Arcelin) |
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Axiolateral Oblique
Modified law |
Tape auricle forward
Head in true lateral Affected side toward IR IOML parallel with IR IPL Perpendicular MSP angled 15 degrees toward IR CR 15 degrees caudad entering 2" posterior and superior to the EAM Exiting mastoid tip at IR - 1" posterior of the EAM |
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Axiolateral oblique - Temporal bone
Modified Law Evaluation Criteria |
-See mastoid tip closest to IR
-Air cells centered to IR -Opposite mastoid process not superimposed but lying inferior and slightly anterior to mastoid process of interest -Auricle of ear not superimposing mastoid -Superimposition of IAM & EAM -TMJ visible anterior to mastoid process -Close beam restriction |
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Axiolateral Oblique - Temporal Bone
Stenvers |
"Upper 3 point landing"
-Forehead, nose and cheeck of side of interest on IR -IOML parallel with floor -MSP at 45 degree angle from IR -CR 12 degrees cephalad, 3-4" posterior and 1/2" inferior to EAM -IT & CR centered |
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Axiolateral Oblique - Temporal Bone
Stenvers Evaluation Criteria |
-Mastoid process in profile below cranium
-Posterior margin of mandibular ramus superimposing lateral border of C-Spine -Mandibular condyle projecting over atlas near petrosa -Close beam restriction -Petromastoid portion in profile -Lateral border of skull to lateral border of orbit -Petrous ridge extended to a point about two thirds up lateral border of orbit |
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Axiolateral Oblique - Temporal Bone
Arcelin |
-Pt supine with MSP centered to midline
-Rotate face away from side of interest -MSP at 45 degree angle with plane of IR -IOML perpendicular to IR -CR angled 10 degrees caudad -Enters 1" anterior to EAM and 3/4" above it |
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Axiolateral Oblique - Temporal Bone
Arcelin Evaluation Criteria |
-Petromastoid portion in profile
-Lateral border of skull to lateral border of orbit -Petrous ridge lying horizontal about two thirds up lateral border of orbit -Mastoid process in profile below cranium -Posterior margin of mandibular ramus superimposing lateral border of C-spine -Mandibular condyle projecting over atlas near petrosa -Close beam restriction |
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What does the Arcelin method demonstrate?
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The petrous portion of the temporal bone farthest from the IR
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What seven bones make up the orbit?
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Frontal
Sphenoid Ethmoid Maxilla Zygoma Lacrimal Palatine |
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Essential projection for the Optic Canal and Foramen
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Parietoorbital oblique
(Rhese method) |
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Parietoorbital Oblique
(Rhese) - "Lower 3 point landing" |
-Center affected orbit to IR
-Zygoma, nose and chin on bucky -AML perpendicular to IR -MSP forms 53 degree angle with IR -CR perpendicular entering 1" superior and posterior to TEA -Exits orbit closer to IR |
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Parietoorbital Oblique
(Rhese) Evaluation Criteria |
-Optic canal and foramen visible at end of sphenoid ridge in inferior and lateral quadrant of orbit
-Entire orbital rim -Supraorbital margins lying in same horizontal line -Close beam restriction to orbit |
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Essential projections for TMJs
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AP Axial (open and closed mouth)
Axiolateral Oblique (Modified Law) |
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AP Axial TMJ
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-Pt supine or seated
-Posterior skull against bucky -MSP perpendicular to IR -OML perpendicular to IR -CR angled 35 degrees caudad -CR centered 3" above nasion -One exposure open mouth, one closed |
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AP Axial TMJ
Evaluation Criteria |
-No rotation of head
-Minimal superimposition of petrosa on condyle in closed mouth position -Condyle & TMJ below pars petrosa in open mouth position |
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Axiolateral Oblique - TMJs
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-One with mouth open, one closed
-Center a point 1/2" superior to EAM to IR -Rest cheek against IR -MSP 15 degrees toward IR -IPL perpendicular -AML parallel to floor -CR 15 degrees caudad entering 1.5" superior to EAM |
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Axiolateral Oblique - TMJs
Evaluation Criteria |
-Condyle lying in mandibular fossa in closed mouth position
-Condyle lying inferior to articular tubercle in open mouth (if normal) |
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What position am I in??
Supine, MSP centered Face rotated 45 degrees IOML perpendicular to IR CR angled 10 degrees caudad CR entering 1" anterior and 3/4" above the EAM |
Axiolateral Oblique - Temporal Bone
Arcelin |
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What position am I in??
From lateral - head turned 15 degrees IPL perpendicular to the IR AML parallel to the floor CR angles 15 degrees caudad entering 1.5" superior to the EAM |
Axiolateral Oblique
TMJ |
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What position am I in??
Posterior of skull to bucky MSP perpendicular to IR OML perpendicular to IR CR 35 degrees caudad entering 3" above nasion |
AP Axial TMJ
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Where is the optic canal and foramen seen on the Rhese view?
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At the end of the sphenoid ridge in the inferior and lateral quadrant of the orbit
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What position am I in?
From true lateral, turn head 15 degrees IOML parallel with IR IPL perpendicular to IR CR angles 15 degrees caudad CR enters 2" posterior to and superior to EAM |
Axiolateral Oblique
Modified Law |
