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Toggle > X-Ray Analysis > Flashcards

X-Ray Analysis Flashcards

1
Q

4 films

A

lateral
nasium
base posterior
APOM

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2
Q

lines on lateral film

A

occipital condylar line
atlas plane line
listing line

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3
Q

atlas plane line on lateral film goes though

A

dot on thin part of posterior arch of atlas
dot on anterior tubercle - close to anterior arch
-draw line through these 2 dots

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4
Q

LL on lateral film

A

parallel to OCL down to dot on posterior arch

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5
Q

finding on lateral film

A

AS or AI

  • measured by angle btwn APL and LL; if APL> LL than 4 degrees, AS
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6
Q

if APL > LL by MORE than 4 degrees

A

subtract 4 from measured angle

AS

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7
Q

if APL > LL by LESS than 4 degrees

A

4- measured angle

AI

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8
Q

If LL > APL

A

add 4 degrees to measured angle

AI

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9
Q

if APL and listing line are the same, it is

A

AI4

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10
Q

lines on nasium film

A

ocular orbital line
superior basic line
inferior basic line
vertical median line

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11
Q

superior basic line is drawn on nasium film by

A
  • dot both medial-inferior tips of condyles

- parallel to OOL down to first condyle; draw line

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12
Q

inferior basic line on nasium view

A

line through the lateral inferior tips of atlas lateral mass

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13
Q

+ sign on nasium view

A

horizontal part- draw line btwn 2 condyle tips
set compass to width of condyle tips, draw arc above and below
vertical part- connect 2 arch

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14
Q

vertical median line on nasium view

A

perpendicular to OOL, draw line through center of + sign

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15
Q

finding on nasium view

A

atlas laterality

bigger # = side of anteriority

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16
Q

70% rule for nasium view

A

side of convergence btwn SBL and IBL is side of laterality

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17
Q

lines on base posterior

A

atlas plane line

perpendicular skull line

18
Q

atlas plane line on base posterior

A

through traverse processes

19
Q

perpendicular skull line on base posterior

A
  • dot middle of nasal septum
  • dot like points on ocular orbital; parallel down to basilar process and make 2 dots – draw horizontal line for + sign
  • arch set to width of basilar process; make arch about and below
  • draw line connecting arches for vertical line of + sign
20
Q

finding on base posterior film

A

if angle > 90degrees, side of posterior rotation

if angle > 90 degrees, side of anterior rotation

21
Q

lines on APOM

A

ocular orbital line
superior basic line
inferior basic line
vertical median line

22
Q

superior basic line on APOM

A

dot on jugular process on both sides, draw line through these

(will NOT be perpendicular to OOL)

23
Q

inferior basic line on APOM

A

dots on lateral-inferior tips of atlas lateral mass; draw line through

24
Q

vertical median line

A

construct + sign using condylar tips

line perpendicular to OOL and straight line through center

25
Q

2 reference points on APOM film

A

center of odontoid process - BASE

spinous prcess

26
Q

finding on APOM

A

axis listing

ex. spinous left body pivot, entire segment left

27
Q

for axis listing for spinous component

A

compare spinous process dot to base of odontoid dot –> gives spinous right/left body pivot

28
Q

entire segment component

A

compare top dot to VML

29
Q

*major component

A

compare spinous dot - odontoid dot and odontoid dot - VML dot and see which is more significant

30
Q

assumed atlas listing is found on ____ and is done by:

A

APOM
measure laterality along IBL with VML to get side of laterality; then look for convergence btwn SBL and IBL to get rotation

31
Q

constant is when

A

atlas and axis have same rotation

32
Q

variable is when

A

atlas and axis are rotated in opposite directions

33
Q

atlas listings

A

12

34
Q

axis listings

A

8

35
Q

lateral film AKA

A

longitudinal

36
Q

nasium film AKA

A

horizontal

37
Q

base posterior film AKA

A

vertical

38
Q

APOM film AKA

A

vertico-horizontal

39
Q

of simple listings for axis

A

4

40
Q

of listings without rotation for axis

A

2

41
Q

of listings without rotation for atlas

A

4

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