Lumbar Spine & SI Joints QuizVersión en línea Test your knowledge on radiographic positioning of the lumbar spine and sacroiliac joints! por Autumn 1 Which series of radiographs produces the highest gonadal dose outside of fluoroscopy? a cervical spine b thoracic spine c lumbar spine d sacrum/coccyx 2 What is the appropriate kVp range for lumbar spine radiographs? a 60-70 kVp b 70 kVp c 75-90 kVp d 110-125 kVp 3 What is the primary purpose of flexing the knees for the AP lumbar spine image? a to maximize the lordotic curvature of the lower back b to minimize the lordotic curvature of the lower back c to maximize patient comfort 4 Where does the CR enter the patient for the AP lumbar spine with full 17" length collimation? a MSP, 1.5" above the iliac crest b MSP at the iliac crest c MSP, 2" above pubic symphysis d MSP, at the ASIS 5 What vertebral levels must be included on the AP, obliques, and lateral projections of the lumbar spine? a T10-S4 b T12-S1 c L1-L5 d L1-S1 6 The LPO of the lumbar spine will demonstrate what anatomy? a left intervertebral foramina b right intervertebral foramina c left zygapophyseal joints d right zygapophyseal joints 7 What is the average obliquity required for the oblique positions of the lumbar spine? a 30 degrees b 45 degrees c 60 degrees d 70 degrees 8 Where does the central ray enter for the LPO/RPO lumbar spine? a 1.5" above the crest, 4" medial to the elevated ASIS b 1.5" above the crest, 2" medial to the elevated ASIS c At the iliac crest, 2" medial to the elevated ASIS d At the iliac crest, 4" medial to the elevated ASIS 9 Letter A identifies what anatomy? Written answer 10 Letter B identifies what anatomy? Written answer 11 Letter C identifies what anatomy? Written answer 12 Letter D identifies what anatomy? Written answer 13 Letter E identifies what anatomy? Written answer 14 If the nose of the Scotty dog extends beyond/past the body of the vertebra, what has occurred? a over-rotation b under-rotation 15 Where does the central ray enter for the lateral projection of the lumbar spine? a MCP, at the iliac crest b MCP, 1.5" above the iliac crest c Posterior to MCP, at the iliac crest d Posterior to MCP, 1.5" above the iliac crest 16 If the interiliac line is not perpendicular to the table/IR, how should the CR be placed? a perpendicular to the IR b angled 5-8 degrees cephalic c angled 5-8 degrees caudal d angled 3-5 degrees caudal 17 What breathing instructions should be given for all projections of the lumbar spine (excluding the lateral spot)? a take in a breath and hold it b blow out your breath and hold it c hold your breath (phase doesn't matter) d breathe normally 18 Which two of the following are the appropriate centering points for the lateral L5-S1 spot? (Select TWO) Choose one or more answers a 1.5" above the iliac crest b 1.5" below the iliac crest c 2" posterior to ASIS d 3.5" posterior to ASIS 19 What is the appropriate CR angle for the AP Axial L5-S1 projection on a female patient? a 35 degrees cephalic b 35 degrees caudal c 30 degrees cephalic d 30 degrees caudal 20 Lateral flexion and extension views of the lumbar spine are performed to demonstrate? Written answer 21 Where does the central ray enter for the AP axial projection of the SI joints (Ferguson method)? a MSP, at the ASIS b MSP, at pubic symphysis c MSP, 2" below ASIS 22 When performing posterior obliques of the SI joints, which joint will be open? a the downside (dependent) joint b the upside (elevated) joint
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