Adapt Spine And Pelvis Procedures - ARRT Radiography Exam

1. What is the key positioning rule for trauma C-spine imaging regarding the cervical collar?

   Do not remove the cervical collar unless ordered by a physician. Preserves spinal alignment and immobilization to avoid worsening potential cervical injuries during imaging.

2. What is the first imaging priority for suspected spine or pelvic trauma before moving the patient?

   Maintain immobilization; do not move patient without physician approval. Ensures patient safety by preventing further injury to potentially unstable spinal or pelvic structures prior to diagnostic confirmation.

3. Which instruction is most appropriate for a patient with limited mobility during trauma spine imaging?

   Use minimal movement; obtain required views with horizontal beam techniques. Minimizes risk of further injury by employing techniques that avoid unnecessary patient repositioning.

4. Which hip projection is used for trauma when the affected leg cannot be moved or rotated?

   Axiolateral hip (Danelius-Miller cross-table lateral). Offers lateral hip visualization without moving the injured leg, essential for trauma assessment.

5. Which pathological condition often requires avoiding spinal flexion due to vertebral instability?

   Rheumatoid arthritis with cervical spine involvement. Atlantoaxial subluxation risk demands caution to prevent cord compression from flexion maneuvers.

6. What is the correct imaging approach when a patient is on a backboard for suspected spine trauma?

   Image through the backboard; do not remove it without physician order. Maintains spinal immobilization to prevent injury while allowing initial radiographic evaluation.

7. Which projection is used to evaluate the odontoid when the patient cannot open the mouth?

   AP axial odontoid (Fuchs or Judd method). Axial angulation visualizes the odontoid process through the foramen magnum without requiring mouth opening.

8. Which lateral lumbar spine alternative is used when the patient cannot be rolled into a true lateral?

   Cross-table lateral lumbar spine (horizontal beam lateral). Facilitates lateral imaging without rolling the patient, crucial for maintaining stability in lumbar trauma.

9. Which additional view is indicated if the C$7$-T$1$ junction is not seen on a trauma lateral C-spine?

   Swimmer's lateral (cervicothoracic lateral). This view clears the cervicothoracic junction obscured by shoulders, ensuring comprehensive trauma assessment.

10. Which femur projection is preferred in trauma when the patient cannot be rolled for a lateral?

    Cross-table lateral femur (horizontal beam lateral). Enables lateral femur imaging without patient rotation, adapting to trauma-induced mobility limitations.

11. Which positioning aid is commonly used to reduce OID for a cross-table lateral C-spine?

    Place IR as close to neck as possible; support with sponges as needed. Minimizes magnification and distortion by reducing object-to-image receptor distance in horizontal beam setups.

12. What is the correct beam direction for a cross-table lateral hip (Danelius-Miller) in trauma?

    Horizontal beam, directed to the femoral neck. Horizontal angulation targets the femoral neck perpendicularly, ensuring clear imaging despite patient immobility.

13. What is the standard trauma pelvis projection used for suspected pelvic fracture?

    AP pelvis (supine), performed without rotating lower limbs. Evaluates pelvic fractures safely in supine position, avoiding limb manipulation that could displace fragments.

14. What is the minimum cervical spine series requirement in acute trauma to clear the C-spine?

    Must visualize C$1$ through C$7$ and the C$7$-T$1$ junction. Complete visualization is essential to rule out fractures, dislocations, or instability that could lead to neurological damage.

15. Which projection is preferred for a trauma cervical spine when the patient cannot be upright?

    Cross-table lateral C-spine (horizontal beam lateral). Enables safe imaging of the cervical spine in supine position without requiring patient movement that could exacerbate trauma.

16. What is the preferred trauma lumbar spine projection when the patient cannot stand or roll?

    AP lumbar spine on the backboard (supine). Allows anteroposterior imaging in supine position, adapting to restrictions from trauma or backboard use.

17. Which trauma thoracic spine projection is used when the patient cannot be turned for a lateral?

    Cross-table lateral thoracic spine (horizontal beam lateral). Provides lateral visualization without patient rotation, minimizing risk in trauma cases with limited mobility.

18. What is the key adaptation for lateral thoracic spine imaging to reduce superimposition in nontrauma patients?

    Use breathing technique (orthostatic breathing) if patient condition allows. Blurs overlying rib and lung structures during exposure, improving vertebral visibility in patients able to breathe normally.

19. What is the key positioning rule for a trauma AP pelvis regarding internal rotation of the legs?

    Do not internally rotate legs when fracture/dislocation is suspected. Prevents further displacement of pelvic or hip fractures that could occur with forced leg positioning.

20. Which condition commonly requires modified spine positioning due to risk of fracture with minimal trauma?

    Osteoporosis. Bone density loss increases fragility, necessitating gentle handling to avoid iatrogenic fractures during positioning.

21. Which projection best demonstrates pelvic brim distortion and is used for pelvic trauma assessment?

    AP axial inlet (Bridgeman method). Angled projection highlights inlet distortions, aiding in evaluation of pelvic stability and fracture patterns.

22. What is the key imaging adaptation for kyphosis when obtaining a lateral thoracic spine?

    Use sponges to support and align spine; keep patient as comfortable as possible. Supports exaggerated thoracic curvature, ensuring proper alignment and reducing discomfort during imaging.

23. Identify the correct action if the patient reports severe pain during positioning for spine imaging.

    Stop positioning and notify the radiologist/physician immediately. Prioritizes patient safety, as pain may indicate instability or fracture exacerbation during manipulation.

24. Identify the correct action if a trauma pelvis radiograph suggests an unstable pelvic fracture.

    Maintain immobilization and immediately notify the radiologist/physician. Prompt notification ensures appropriate medical intervention for potentially life-threatening instability.

25. Which projection demonstrates the pelvic ring and is often used for pelvic trauma evaluation?

    AP axial outlet (Taylor method). Provides angled view to assess pelvic ring integrity and detect disruptions common in trauma.

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