- The components that make up the circle of Willis brain include:
A. Anterior cerebral artery, posterior communicating a., middle cerebral a
B. Posterior /anterior cerebral , anterior/posterior communicating, internal carotid
C. Anterior cerebral artery, anterior communicating a., posterior cerebral a
D. Anterior cerebral artery, middle communicating a., middle cerebral a
B. Posterior /anterior cerebral , anterior/posterior communicating, internal carotid
- To optimize brain imaging when evaluating patients for high prolactin level , an FDA - approved contrast agent can be administered:
A. With single dose followed by rapid imaging
B. With 1/2 dose followed by dynamic imaging
C. With ½ dose followed by delayed imaging
D. With double dose followed by rapid imaging
B. With 1/2 dose followed by dynamic imaging
- The patient with a Hx of hydrocephalus can be imaged using cardiac gating for :
A. To visualize CSF flow
B. To minimize pulsatile flow motion artifact in the brain
C. To make vessels appear dark
B. To minimize pulsatile flow motion artifact in the brain
- When scanning patients to rule out brain tumors, the weighted images acquired to evaluate the extent of the lesion, after injection of gadolinium are:
A. T1
B. T2
C. Proton density
D. T2* gradient echo
A. T1
- To optimize brain imaging when evaluating patients for metastatic disease, an FDA - approved contrast agent can be administered:
A. With single dose followed by rapid imaging GE
B. With 1/2 dose followed by dynamic imaging T1
C. With full dose followed by delayed imaging of MTSE
D. With double dose followed by rapid imaging T2 Flair
C. With full dose followed by delayed imaging of MTSE
- To best visualize the pituitary gland in MRI, th e opt imal plane for high - resolution images are:
A. Sagittal and coronal
B. Coronal and axial
C. Axial and sagittal
D. Sagittal, coronal and axial
A. Sagittal and coronal
- To best visualize the IAC in MRI, the optimal plane for high - resolution images are:
A. Sagittal and coronal
B. Coronal and axial
C. Axial and sagittal
D. Sagittal, coronal and axial
B. Coronal and axial
- For a patient with a suspected pituitary micro adenoma, contrast is injected and imaging is performed:
A. Rapidly because lesion enhance early
B. Rapidly because lesions have low signal intensity compared to the enhanced pituitary gland
C. With delayed imaging because lesions enhance slowly and the pituitary gland does not enhance
D. With no specific timing considerations
B. Rapidly because lesions have low signal intensity compared to the enhanced pituitary gland
- Typical brain protocols with Hx of concussion consist of
- Sagittal T 1
- Axial T2 FSE
- A xial GRE
- Axial T2 Flair
- Coronal T2 FSE
- Axial Diffusion
A. 1,2 and 3 only
B. 1,2, and 4 only
C. 1,2,4, and 6 only
D. 1,2,3,4,5, and 6
D. 1,2,3,4,5, and 6
- the cranial nerves running through the internal auditory canals are :
A. IV and V
B. V and VI
C. VI and VII
D. VII and VIII
E. VIII and IX
D. VII and VIII
- On a typica l diffusion image what does the high signal indicate?
A. Tumor
B. Old stroke
C. Transient ischemic attack (TIA)
D. Early (hyper acute) infarct
D. Early (hyper acute) infarct
- For most brain imaging procedures, the patient is positioned ______ and centered for landmark at the ______.
A. Prone/acantho - meatal line
B. Supine/nasion
C. Supine/external auditory meatus
D. None of the above
B. Supine/nasion
- For most TMJ imaging procedures, the patient is positioned ______ and centered for landmark at the ______.
A. Prone/acantho - meatal line
B. Supine/nasion
C. Supine/external auditory meatus
D. None of the above
C. Supine/external auditory meatus
- For the evaluation of a patient with “tinnitus” images should be “centered” at the level of the:
A. Submeto - vertex
B. Nasion
C. Glabella
D. Internal auditory meatus
D. Internal auditory meatus
- Typical diffusion images are typically acquired with a B - value of :
A. 400 0ms
B. 100ms
C. 2200ms
D. 1200ms
D. 1200ms
- On T2 FSE sequence, CSF appears bright because:
A. Water has a short T2 relaxation time
B. Water has a long T2 relaxation time
C. Water has short T1 relaxation time
D. Water has a high proton density
B. Water has a long T2 relaxation time
- The lesion on t he enhanced images (T1 post GAD ) appears bright because gadolinium:
A. Shortens the T1 relaxation time
B. Increases the T1 relaxation time
C. Shortens the T2 relaxation time
D. Increases the T2 relaxation time
A. Shortens the T1 relaxation time
- When performing an MRA of the cerebral arteries, a satur ation band should be placed_____ _for axial slices:
A. Anterior
B. Posterior
C. Superior
D. Inferior
C. Superior
- Magnetic susceptibility effects are more prominent with:
A. Gradient echo sequences
B. Spin echo
C. Fast spin echo
D. Inversion Recovery sequences
A. Gradient echo sequences
- Susceptibility effects can be reduced by:
A. Reducing FOV
B. Reducing the TR
C. Reducing the TE
D. Increase BW
E. A,C,D
E. A,C,D
- The cranial nerve associated with the optic nerve is the
A. First cranial nerve
B. Second cranial nerve
C. Third cranial nerve
D. Vagus nerve
B. Second cranial nerve
- The MRV technique that is typically used for the evaluation of venous structures of the head is:
A. 2D TOF
B. Contrast enhanced MRA
C. PC MRA
A. 2D TOF
- On the coronal display of the MRA of brain, the PICA arises from:
A. Posterior cerebral artery
B. Basilar artery
C. Vertebral arteries
D. A an d C
C. Vertebral arteries
- T2 weighted fluid attenuated inversion recovery (FLAIR) sequences are typically used for the evaluation of:
A. Musculoskeletal contusions
B. Fat
C. Retro - orbital fat
D. Periventricular white matter disease
D. Periventricular white matter disease
