Xray: Mensuration Lines, Angles, Flashcards

(77 cards)

1
Q

Basilar Angle

A

> 152 = platybasia / basilar impression

norm: 123-152
aka Welcker’s or Martins’s BA

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2
Q

McGregor’s Line

A

BEST LINE for basilar impression / invagination
(Pagets, osteomal, FD)

Odontoid is >8mm above in Males OR
Odontoid is >10mm above in Females

aka Basal Line

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3
Q

Chamberlain’s Line

A

Basilar impression if >7mm above line
(Pagets, osteomal, FD)

aka Palato-occipital

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4
Q

Macrae’s Line

A

Basilar Impression if occiput above line

aka Foramen Magnum Line

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5
Q

Atlantodental Interspace (ADI)

A

> 3mm in adults
5mm in children
Transverse ligament rupture or instability –> Downs, Inflammatory Arthritis

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6
Q

George’s Line

A

antero / retro listhesis
subluxation

posterior bodies

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7
Q

Posterior Cervical Line

A

antero / retro listhesis
subluxation

spinolaminar junction

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8
Q

Stress Lines of Cervical Spine

A

Flexion C5/C6
Extension C4/C5

aka Ruth Jackson’s lines
DDD, muscle spasm, joint fixation

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9
Q

Prevertebral Soft Tissues

A

PLT sandwich 7,14,21
R-pharyngeal: >7mm (C2-C4)
R-laryngeal: >14mm (C5)
R-tracheal: >22mm (C6-7)

Tumor, mass, hematoma

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10
Q

Cobb’s Angle

A

BEST for scoliosis

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11
Q

Risser Ferguson

A

Scoliosis

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12
Q

Sacral Inclination

A

Norm: 30-72
Avg: 46

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13
Q

Ferguson’s Angle

A

Sacral Base Angle // Lumbosacral Angle

Norm: 26-57
AVG: 41!!!

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14
Q

Meyerdings Grading Line

A

Spondylo grading

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15
Q

Ullmann’s Line

A

L5 should be posterior or just at perpendicular line….IF L5 body crosses the line = ANTEROlisthesis
aka Garland Thomas

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16
Q

Garland Thomas Line

A

Spondylo

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17
Q

Einstein’s Line

A

Measures >15mm…

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18
Q

Canal / Body Ratio

A

Canal Stenosis

Higher the ratio, smaller the canal

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19
Q

Lumbosacral Disc Angle

A

Lines are drawn parallel and through the INFERIOR END PLATE OF L5 AND SUPERIOR ENDPLATE OF S1
Normal = 10-15

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20
Q

Lumbar Gravity Line

A

Ferguson’s Line
Hyper / Hypo Lordosis

Norm: line intersects sacral base (S1)
Ant to Sacrum = HYPERlordosis
Post to Sacrum = HYPOlordosis

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21
Q

Macnab’s Line

A

Line intersects SAP (superior articular processes) =

Facet Imbrication
…facet arthrosis

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22
Q

Hadley’s S Curve

A

Should like like an S, if not =
Facet Imbrication
…facet arthrosis

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23
Q

Kohler’s Line

A

Protrusio Acetabuli

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24
Q

Shenton’s Line

A

Should be smooth

SCFE - dislocation / fx/ dysplasia

aka Menard’s or Makka

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25
Iliofemoral Line
SCFE - dislocation / fx / dysplasia
26
Femoral Angle
aka MIKULICZ'S ANGLE Norm: 120-130 130+ - Coxa VALGA 120- - Coxa vara
27
Skinner's Line
Line is drawn thorugh and parallel to the femoral shaft. A perpendicular line is drawn tangenital to the tip of the GT Fovea capitus below line = fx or coxa vara
28
Klein's Line
BEST FOR SCFE!!!
29
PATELLAR POSITION
tendon length is 20% greater than the patellar length = patella alta
30
Heel Pad Measurement
Distance >25mm male, >23mm female | Acromegaly..."increased Heel Pad"
31
Boehler's Angle
Norm: 28-40 degree angle >40 degree = fx with calcaneous dysplasia or fx
32
Sella Turcica size
- Seen on lateral skull - Normal: AP: 5-16 (11mm avg); Vert: 4-12 (8mm avg) ** enlarged = neoplasm, aneurysm, empty sella syndrome
33
Digastric Line
aka Biventer Line Line - C2: 1-21mm (11avg) Line - C1/Co: 4-20 (4avg) Measurements decrease with platybasia (Pagets, osteomal, FD)
34
Sagittal Dimension of Cervical Canal
C1: 22mm C2: 20mm C3: 18mm C4-C7: 17mm Pavlov's ratio --
35
Cervical Gravity Line
Line should pass through C7 body (from apex of odontoid) | -- assesses gravitational stress at cervicothoracic junction
36
Cervical Lordosis
``` Depths of C Curve Method of Jochumsen Angle of C curve Method of Gore Method of Drexier ```
37
Thoracic Cage Dimension
aka Straight Back Syndrome Eval Males: 11-18cm (14) Females: 9-15cm (12) Less in either of those categories = SBS...check heart for murmurs
38
Lumbar Lordosis
50-60 degrees normal
39
Van Akkerveeken's Measurment of Lumbar Instability
Norm:
40
Intercrestal Line
Norm: line intersects bottom L4 body / disc = most stable Helps to indicate where the most biomechanical stress is coming from L4/5 Degen: HIGH line, long L5 TP, rudimentary rib, transitional vertebra L5/S1 Degen: Line through L5 body, short L5 TP, no rud rib, no trans vert
41
Center Edge Angle
aka CE angle of Wiberg Norm: 20-40 deg (36avg) shallow angle = acetabular dysplasia --> DJD
42
Radioulnar Variance
Norm: 2 lines should be aligned Difference of 5mm = significant Negative UV = Keinbock's (AVN of lunate) Positive UV = stress on the ulna
43
72in FFD
Fullspine Chest: PA + Lat Cervicals: neut + F/E + obl + lat
44
Tube Tilt
Cervicals Butt Extremities
45
Cervicals w/ TT
AO: 15 caud PO: 15 ceph AP: 15 ceph Pillar: 35 ceph
46
Butt w/ TT
Sacral Base Tilt / Lumb Spot AP: 20-25 ceph AP sacrum: 15 ceph AP coccyx: 10 caud
47
Extremities w/ TT
AP knee: 5 ceph Sunrise: 10 ceph AP/OB foot: 10 ceph Apical Lordotic: 30 ceph
48
akas for FFD
SID + TID
49
Lateral Skull View
Sella Turcica
50
PA Caldwell Projection
Frontal Sinus
51
AP Towne's View
Foramen Magnum
52
Water's View
Maxillary Sinus
53
Best to view a Jefferson's Burst FX
APOM
54
Cervical Obliques help to view
Motive IFV's
55
Evaluate ADI
Cervical flexion
56
Cervical Pillar View
articular processes and apophyseal joints pillar = uncinates
57
Swimmer's View
Cervico Thoracic Junction PP: standing, lateral position with arm closest to the bucky raised overhead; other arm hangs at patient's side
58
Which views have specific breathing instructions? What are the instructions?
PA Chest + Lat Chest + Apical Lordotic Deep breath in and hold **72" FFD
59
Apical Lordotic View
Pancoast tumor
60
Lateral Lumbar
IVF's of Lumbars
61
Ferguson's Projection
aka L5/S1 spot aka Sacral Base Tilt TT 25 cephalic
62
Lumbar Obliques
Motive is PARS!!!
63
To visualize the SI joint, what is the best TT?
30 cephalic AP angulated SI Joints View
64
AC Jt w/ and w/o weights
AC joint | TT 5 cephalad
65
AP shoulder w/ EXT ROT
Greater Tub
66
AP shoulder w/ INT ROT
Lesser Tub
67
What makes up an elbow series?
AP Medial (Int) Oblique Lateral
68
AP Elbow PP
Seated Shoulder, Elbow, Wrist against table SUPINATED hand
69
Med Oblique Elbow PP
Seated Shoulder, Elbow, Wrist against table PRONATED hand
70
Lateral Elbow PP
Seated Elbow FLEXED Shoulder, Elbow, Wrist against table PRONATED hand w/ thumb pointing towards tube
71
PA wrist PP
Seated elbow + wrist against table PRONATED hand w/ fingers curled in fist
72
PA Ulnar Deviation View
Scaphoid + Lunate
73
AP Pelvis PP
Standigng w/ feet turned in 15 degrees
74
Tunnel Projection View
Intercondylar Fossa TT: 45 caudal PP: prone w/ knee flexed to 45
75
Tangenital (Sunrise) View
Patella + Patellofemoral Jt Space
76
Medial Oblique Ankle PP
Supine Leg extended Ankle 90 dorsiflexion Foot turned IN 5
77
Cathode consists of:
Large Filament Small Filament Focusing Cup