Midterm review- image criteria and non routine stuff Flashcards
What anatomy are we trying to visualize on an AP axial c-spine?
C3 to c7 and surrounding soft tissues.
On an odontoid (dens) image what should be equidistant from the dens?
Lateral masses of atlas.
what should be equidistant from the lateral masses??
Mandibular rami.
which joint should be open in an odontoid image?
Atlantoaxial joint.
Where should the dens be?
Middle of the middle.
What should appear open on AP Axial Oblique C-spine images?
2nd through 7th intervertebral foramina are open, intervertebral disc spaces are open.
Which vertebrae are we trying to visualize in AP axial oblique c-spine?
C1-T1.
When the patient is in RPO position, which pedicles are in profile? (C-spine oblique)
Left.
what parts of the atlas should be seen on ap oblique axial c-spine?
Posterior arch and vertebral foramen .
Which Projection will show c-spine zygapophyseal joints? Why?
Lateral, because zygapophyseal joints in c-spine are perpendicular to the midsagittal plane.
what should be seen nicely in profile in lateral c-spine?
Spinous processes.
Should the mandible be superimposing c1 and c2? (C-spine lateral)
Nope.
Should the posterior arch of c1 and spinous processes of c2 be superimposed by the occipital bone?(c-spine lateral)
Nope.
What range of anatomy should we see in a lateral c-spine?
Sella turcica to t1.
What should appear open on lateral C-spine images?
Intervertebral joint spaces.
What anatomy should be demonstrated in an AP t-spine image?
C7 to L1.
Which foramina are demonstrated in a lateral T-spine image?
Intervertebral foramina
what are in profile in a lateral t-spine?
Pedicles.
What are open in a lateral t-spine?
Intervertebral joint spaces.
how much space is allowed (max) between posterior ribs in a lateral T-spine?
1.25 centimeters.
What should be included in a lateral t-spine and what should be well demonstrated?
C7 to L1 included, T3 or 4 to L1 well demonstrated.
What joints should be superimposed in a Swimmer’s projection?
Zygapophyseal.
What is the center of the field in a swimmer’s projection, and what is included in the field?
T1 is in the centre, c5 to t3 is included.
What is included in a Lumbar spine AP projection?
T12 to SI joints.
Where is the marker in an AP lumbar spine projection?
Lower lateral corner (at A S I S)
Which lumbar spine projection demonstrates both the intervertebral joint spaces and intervertebral foramina?
Lateral.
What suggests that there is no rotation in a lateral L-spine image?
Superimposition of posterior surfaces of vertebral bodies.
What suggests that there is no tilt in a lateral L-spine image?
Superimposition of superior surfaces and inferior surfaces of vertebral bodies.
What is included in lateral l-spine images?
T12 to S1 or 2.
Which projection demonstrates the L-spine zygapophyseal joints?
45 degree oblique.
What do we want in the center of an L5 S1 projection?
Open L5 S1 intervertebral space.
What should be superimposed in L5 S1 images?
L5 pedicles, and pelvic alae.
What should not be superimposing the sacrum in an AP Axial Sacrum image?
Symph.
What should be aligned with symph in an AP axial sacrum image?
Median sacral crest and coccyx.
what’s in profile in a lateral sacrum image?
Median sacral crest.