ROENTGENOMETRICS Flashcards
Normal range of Sella Turica
16x22mm
Normal range of Sella Turica
16x22mm
Hole in diaphragma sells lets CSF flow in, erodes pituitary
Empty Sella Syndrome
Opposing part of sphenoid, from foramem magnum to dorsum sellae
Clivus
Line drawn from nasion to center of sella to basion
Martins Basilar Angle
Normal angle range fo Martins Basilar Angle
132-152
> 152=playbasia
Line drawn from hard palate to opisthion
Chamberlain’s line
odontoid should not extend more than 7mm above this line
Line from hard palate to inferior occiput
McGregor’s Line
odontoid should not extend 8mm above the line
Is basilar impression congenital or pathological?
Congenital
Is basilar invagination cogenital or pathological?
Pathological
This line is used to detect alignment in sagittal plane along posterior spinolaminar lines
George’s Line
This line is used to detect alignment in sagittal palne connecting spinolaminar lines
Spinolaminar lines
Normal range for antlantodenatl interval
Adult: 3mm or 2.5mm
Child: 5mm or 4.5mm
What is the most common reason for big ADI
Rheumatoid Artirits
Normal range of C1 plane range and inferior C7`
35-45
Hypolordosis cervical range
Hypolordosis cervical range
Hole in diaphragma sells lets CSF flow in, erodes pituitary
Empty Sella Syndrome
Opposing part of sphenoid, from foramem magnum to dorsum sellae
Clivus
Line drawn from nasion to center of sella to basion
Martins Basilar Angle
Normal angle range fo Martins Basilar Angle
132-152
> 152=playbasia
Line drawn from hard palate to opisthion
Chamberlain’s line
odontoid should not extend more than 7mm above this line
Line from hard palate to inferior occiput
McGregor’s Line
odontoid should not extend 8mm above the line
Is basilar impression congenital or pathological?
Congenital
Is basilar invagination cogenital or pathological?
Pathological
This line is used to detect alignment in sagittal plane along posterior spinolaminar lines
George’s Line
This line is used to detect alignment in sagittal palne connecting spinolaminar lines
Spinolaminar lines
Normal range for antlantodenatl interval
Adult: 3mm or 2.5mm
Child: 5mm or 4.5mm
What is the most common reason for big ADI
Rheumatoid Artirits
Normal range of C1 plane range and inferior C7`
35-45
Hyperlordosis cervical range
> 45
Hypolordosis cervical range
How to draw Cervical Lordosis Depth Method
- Tip of odontoid
- Poterior surface of C7
- Measure Depth of C4
- 8-12mm average
Ruth Jackson Lines
-Lines drawn from posterior aspect C7
-Lines drawn on posterior aspect of C2
C4/C5 extension
C5/C6 flexion
Cervical Gravitational
- Down from odontoid tip
- normally tranverse the anterior-superior asepct of C7
Sagittal Canal Measurement```
- Anterior-Posterior Vertebral body
- Posterior-Spinolaminar line
Normal Ranges of sagittal canal
12-16mm
Stenosis: >12mm
The ranges of the Pre-verterbal soft tissue space
Retropharyngeal= C2
Ranges for thoracic spine kyphosis
ave. 30
can go up to 56 (women) 66 (men)
Ranges for Lumbar spine lordosis
50-60
Lumabr gravity line
- line dow nfrom mid portion L3 body
- intersects anterior 1/3 of sacrum
- Assest weight bearing
Fergusion’s angle
- Line 1 across sacral base
- Line 2 horizontal to ground
- 26-57 degrees
- can help show loading
What method is used to grade spondylolistehis
Meyerdings
Meyerdings method
-Divide sacrum into 1/4 and drop line inferior to the posterio aspect of L5
Different grades of myerdings method
-Grade 1-
Ulmamn’s line
- line across the sacral base wl perpendicular at anterior segment
- in L5 slips over line=spondylolisthesis
Klines Line
- Drawn across the lateral border of the femoral neck
- Should intersect the outer aspect of the femoral head
- Evaluates for Slipped Capital Femoral Epiphysis
Shentons Line
- arc from medial femoral neck to superior margin of obturator foramen
- normal is smooth arc
Kohlers Line
- line from the pelvic rim to the external margin of the obturator foramen
- aetabulm should not extend beyong this line
Boehler’s angle
- 2 lines connecting the 3 highest points on the ankle
- 28-40
Acromiohumeral space
- under surface of acromion and superio surface of humeral head
- 10mm
Narrowing of the acrominhumeral space is assocaited with
Supraspintaus Tendionpathy
