Diagnostic Imaging Exam 2 Review

which statement is most accurate of CT imaging as compared to MRI?

CT is less claustrophobic

3 multiple choice options

which of the following is accurate of ultrasound imaging?

it is highly portable

3 multiple choice options

cortical bone will be _____ on ultrasound imaging

hyperechoic

3 multiple choice options

A patient sustains a meniscus tear of the knee. Which type of imaging method would be most appropriate to visualize the pathology?

MRI

3 multiple choice options

T/F: CT scans are more sensitive than radiographs

true

1 multiple choice option

sagittal images from a CT scan are viewed in which direction?

left to right

1 multiple choice option

axial images are displayed as if the patient were _____ and the viewer is at their _____

supine; feet

3 multiple choice options

which of the following is CT best for?

all of these

3 multiple choice options

which of the following are is not a negative of using CT

more claustrophobic

3 multiple choice options

T/F: CT is unable to image soft tissue and osseous structures

false

1 multiple choice option

which of the following is MRI not best used for?

artificial joints or heart valves

3 multiple choice options

T/F: MRIs are very efficient, low cost, and images are produced right away

false

1 multiple choice option

which of the following is a disadvantage of MRI?

all of these

3 multiple choice options

which of the following is not a contraindication for MRI?

suspected fracture

3 multiple choice options

in which type of MRI image is the anatomic detail better?

T1

1 multiple choice option

which of the following describes T2 MRI images rather than T1?

muscle is slightly darker

3 multiple choice options

T/F: an MRI T1 image is better at detecting water and swelling and water shows up bright while muscle is slightly darker

false

1 multiple choice option

in ultrasound, structures that reflect waves are bright, or _____, and those that do not reflect are _____

hyperechoic; anechoic

3 multiple choice options

higher frequency ultrasound transducers provider _____ resolution, but _____ depth

better; decreased

3 multiple choice options

which of the following is not a benefit of using ultrasound imaging?

included in many curriculum, used often, bone at metal are imaged well

3 multiple choice options

T/F: tissues are best viewed when on "stretch" or under tension

true

1 multiple choice option

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 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