Diagnostic Imaging W6/9 - Imaging the Spine

which is considered a high risk factor that mandates radiography in the Canadian C-Spine rules?

age

3 multiple choice options

A patient is involved in a bicycle collision and has acute neck pain. According to the Canadian C-Spine rules, does this patient need radiographs?

yes

1 multiple choice option

if aiming to evaluate the intervertebral foramina, which view would be most appropriate?

oblique

3 multiple choice options

if aiming to evaluate stability of the cervical spine, which view(s) would most likely be attained in this case?

lateral flexion/extension stress views

3 multiple choice options

which spinal level (myotomes, dermatomes, etc.) would correspond to the patient's symptoms?

C6

3 multiple choice options

which imaging modality is typically used to evaluate for suspected cauda equina syndrome?

MRI

3 multiple choice options

5 factors were discussed that have been shown to be predictive of identifying a vertebral fracture in those w/LBP. which had the lowest +LR?

distracting painful injury

3 multiple choice options

which of the following is an indication for T-spine imaging?

all of these

3 multiple choice options

which of the following has the highest +LR of 12.8 if there is concern for vertebral fracture in LBP?

major trauma

3 multiple choice options

T/F: 50% of asymptomatic subjects have identifiable abnormality of the disc or spinal canal

true

1 multiple choice option

T/F: disc extrusions, free fragments of disc, and major nerve compression are common in individuals without LBP?

false

1 multiple choice option

MRI demonstrated herniated discs in ___ of asymptomatic subjects

25%

3 multiple choice options

MRI reported to have a sensitivity of ___ - ___ in detecting cancer

83-98%

3 multiple choice options

what is the sensitivity and specificity of MRI for identification of infection?

96%; 92%

3 multiple choice options