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Lumbosacral Spine
Study Questions
| Question | Answer |
|---|---|
| How many vertebrae are there in the sacrum? | 5 fused |
| An abnormally increased concavity of the lumbar spine is termed | lordosis |
| The short ,thick processes that project posteriorly from each side of a vertebral body are called: | pedicles |
| The zygapophyseal joints of the lumbar spine form an angle of how many degrees from the posterior midsagittal plane? | 30-60 |
| The intervertebral foramina of the superior four lumbar vertebrae are situated at how many degrees from the midsagittal plane? | 90 |
| The condition of the lumbar spine in which there is anterior displacement of one vertebra over another is termed | spondylolisthesis |
| On each side of the sacral base is a large wing-like mass called the: | ala |
| The angle of articulation between the sacrum and the ilia (the sacroiliac joints) is: | 25-30 degrees |
| What should be performed to reduce the lordotic curveature of the lumbar spine for the AP projection? | flex the knees and hips |
| Where is the CR directed for an AP lumbosacral spine? | iliac crests |
| The phase of respiration for an AP projection of the lumbar spine is: | suspend at the end of expiration |
| Which plane is placed perpendicular to the tabletop and centered to the midline of the grid/IR for a lateral lumbar spine? | midcoronal |
| While performing a lateral projection of the L5-S1 LS junction, the patient has a large waist, what would you do to ensure the CR passes parallel through the L5-S1 joint space? | direct the CR a few degrees cephalad to compensate |
| If the lumbar spine cannot be adjusted so it is horizontal for the lateral projection, the CR should be angled how many degrees and in which direction: | 5 for men, 8 for women caudad |
| Which of the following describes the central ray centering point for the L5-S1 lateral projection? | 2 inches posterior to the ASIS and 1.5 inches below the iliac crests |
| What specific set of zygapophyseal joints is demonstrated in the RAO position? | left, upside |
| How many degrees is the body rotated for the AP oblique projection of the sacroiliac joint? | 25-30 |
| defined as: malignancy involving the bone marrow | multiple myeloma |
| Which positions are most commonly used to evaluate for motion in the area of interest following spinal fusion surgery? | Lateral with hyperflexion and hyperextension |
| What is the term given to the superior surface of the sacrum | base |
| On a radiograph of a well positioned oblique lumbar spine, you should see which of the following? | Scotty dogs L1-L4 |
| The coccyx bone in the adult is described as the following 3-5 rudimentary vertebrae which fuse into 1 bone | 3-5 rudimentary vertebrae which fuse into 1 bone |
| A radiograph of a posterior oblique (LPO) reveals that the downside pedicles and zygapophyseal joints are projected over the posterior portion of the vertebral bodies of L1-L4. Which specific positioning error is evident here? | patient is over rotated |
| A radiograph of an AP axial coccyx reveals that the symphysis pubis is superimposed over the tip of the coccyx? What would you do to correct for this? | increase the caudad angle |
| What is the term given to the inflammatory rheumatoid arthritis condition that is most common in males in their 30's? | ankylosing spondylitis |
| The symphysis pubis is at the same level as which of the following structures | tip of the coccyx |
| The nose of the scotty dog corresponds to what structure of the lumbar vertebrae? | transverse process |
| The eye of the scotty dog corresponds to what structure on the vertebrae? | pedicles |
| The Ferguson Method for scoliosis is performed with the patient supine. True or False | false |
| The body rotation required to visualize the lumbar zygagpophyseal joint varies depending upon what level is being observed. True or False | true |
| A study is being performed on a child for scoliosis, the technologist could place the child PA to avoid any unnecessary exposure to the gonadal region and breasts. True or False | true |
| What is the condition which is characterized by thick, soft bone marked by bowing and fractures. | Paget's disease |
| The respiration instructions for radiography of the lumbar spine are | suspend at the end of expiration |
| In the AP oblique projection, RPO position, which of the following are demonstrated: | Zygapophyseal joints of the side closest to the IR (right side) |
| Would it be possible to provide an optimal image of an AP axial of the sacrum and coccyx using one exposure? | no |
| When imaging the body to see the right sacroilac joint, you would rotate the patient __________ degrees toward the patient's ___________ side. | 25-30, left |
Created by:
lkdickson
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