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Coccyx
Sacroiliac Joints
Sacrum
Scoliosis Series
General knowledge
100
When positioning for the lateral Coccyx whom should be shielded and why?
Males should be shielded to protect their gonads. Women should not be shielded as sheiding may cover up important anatomy.
100
LRMC requires two positions be taken to evaulate Sacroiliac Joints, what are they?
What is AP Pelvis and both AP Obliques (RPO & LPO).
100
How many sacral segments is the average human born with?
What is Five Sacral Segments
100
What is Scoliosis?
An abnormal or exaggerated lateral curvature of the spine.
100
What landmark represents the lumbar vertebrae L4-5?
What is the iliac crest.
200
The CR angle, degree and direction, required when preforming an AP Axial Coccyx.
What is 10 Degrees Caudad?
200
These 3 body parts should all be in the same plane when positioning for a AP Oblique of the Sacroiliac Joint
What is the shoulder, thorax and hip.
200
This number represents the sets of pelvic sacral foramen an average sacrum contains.
What is 4 sets of sacral foramen?
200
What two regions of the vertebral column should be demonstrated on all images for the Scoliosis series?
What is the Thoracic and Lumbar Spine?
200
The ASIS is at about the same level as?
What is the first or second sacral segment..aka S1-S2.
300
If necessary for the patients condition, the AP Axial Coccyx can be performed prone, what CR angle and direction would be used?
What is 10 degrees cephalad.
300
To visualize the left sacroiliac joint what position would the patient be placed in?
What is the RPO position.
300
The large masses of bone lateral to the first sacral segment are called?
What is the Ala or Wing?
300
What is the standard SID used while performing any of the projections in the Scoliosis series?
What is 40"- 60" SID?
300
The reason a PA Projection is recommended rather than an a AP, when performing a Scoliosis Series, is?
What is the reduction of radiation to sensitive areas?
400
What two projections/positions are used to evaluate subluxation of the sacroiliac joints?
What is AP Axial and Posterior Obliques (LPO & RPO).
400
How many degrees of body rotation is required for the AP oblique projection of the sacroiliac joints?
What is 25 to 30 degrees.
400
How many degrees and in which direction should the CR be directed for the AP Axial projection of the Sacrum?
What is 15 degrees cephalad.
400
What projection (and positions) of the Scoliosis series would be used to assess the range of motion of the vertebral column?
What is AP (PA) Projection - Right and Left Bending
400
What is a continuation of the vertebral canal and contains certain sacral nerves?
What is the sacral canal.
500
On a Lateral radiograph of the Sacrum and Coccyx, an indication of no rotation would be?
What is superimposition of the greater sciatic notches. (Posterior margins of the pelvis)
500
What is the Sacroiliac joint classified as, and, what is its type of mobility?
What is Synovial and Amphiarthrodial.
500
What scale of contrast is desired for any radiograph of the sacrum?
What is Short-Scale (high) Contrast.
500
What two images are obtained using the Ferguson Method?
What is a standard erect AP or PA and one with the foot or hip on the convex side of the curve elevated.
500
Where is the CR centered for the Lateral Sacrum and Coccyx position?
What is 3 to 4 inches posterior to ASIS.