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MRI MODULE 9--NEUROIMAGING TEST

Terms in this set (20)

What pulse sequence should be included to better distinguish between gray and white matter on a brain scan of an infant?
inversion recovery
Which of the following typically are seen on MR images of a geriatric patient's brain? 1.undersized ventricles 2. enlarged spaces between white matter tracts 3. enlarged spaces between brain tissue and the skull
2 & 3--enlarged spaces between white matter tracts and enlarged spaces between brain tissue and the skull
A syrinx is defined as:
a fluid-filled cavity within the central canal of the spinal cord
When multiple sclerosis plaques are identified, they often appear:
on cervical spine images
Which of these statements about gliomas is NOT true? a.they are cancerous tumors b.a glioblastoma multiforme is the most aggressive c.they are found only within the brain or spinal cord d.they grow only on meninges
d. they grow only on meninges
Both meningiomas and acoustic neuromas are ___.
extracranial lesions
While conducting a patient history in the emergency department, a family member tells the physician that approximately and hour before coming to the ER, his grandmother had slurred speech and seemed very confused. Now she seems fine. The ER physician suspects a(n): a.aneurysm b.TIA c.desmoteplase reaction d.subluxation
b. TIA transient ischemic attack
A batwing deformity is:
made up of extremely large transverse processes
Schmorl's nodes are defined as:
nucleus pulposus herneated into a vertebral body
Which of the following statements is TRUE regarding MR spectroscopy? a.it is an outdated form of MR imaging b.it is only used for industrial scanning c.it is used to evaluate chemical makeup of tissue. d.images can be reconstructed in multiple planes
C. it is used to evaluate the chemical makeup of tissue.
When a technologist positions a patient for a routine brain scan, the laser light should be centered at the patient's___.
glabella
The frequency of direction of an MR image of the brain is:
along the long axis of the patient
Which of the following is NOT a characteristic of T1 weighted sequences? a.hypointense blood b.hypointense air and bone c.hyperintense calcifications d.hyperintense fatty tissue
C. hyperintense calcifications
What do T1 images best display? 1.anatomy 2.vascularity and edema 3.congenital anomalies
1 & 3
Which of the following sequences can best display fractures and bone bruises? a.gradient echo b.fast spin echo c.fluid attenuated inversion recovery d.short tau inversion recovery (STIR)
D. Short Tau Inversion Recovery (STIR)
A STIR sequence is scanned before administering contrast because a STIR: a.suppresses the signal from an enhancing lesion b.counteracts the contrast's effect c.is acquired postcontrast d.never is performed using contrast media`
A. suppresses the signal from an enhancing lesion
Which of the following sequences begins with a 45degree flip angle, a short echo time, a short repetition time and uses fast scan times? a.inversion recovery b.spin echo c.fast spin echo d.gradient echo
D. gradient echo
What are advantages of using gradient echo sequences? 1.faster scan times 2.3-D acquisition 3.echo planar imaging
1, 2, &3
When imaging the brain, which of the following is NOT an expected result after administering gadolinium? a.enhanced mucous membranes b.enhanced pineal and pituitary gland c.enhanced cysts d.enhanced choroid plexus
C. enhanced cysts
Perfusion and diffusion: a.provide physiological detail b.provide detail for staging tumors c.aid in biopsies and therapy d.are performed on all cardiac patients
A. provide physiological detail
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