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20 Cards in this Set
- Front
- Back
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Which of the following is NOT a location where one would expect to find cerebral spinal fluid?
1. subarachnoid space 2. subdural space 3. fourth ventricle of the brain a. 1 only b. 2 only c. 3 only d. 2 & 3 |
b. 2 only
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Which scanning plane is best fore evaluating the anatomical relationship between the pituitary and the sella turcica?
a. transverse b. oblique between transverse and sagittal c. coronal d. sagittal |
c. coronal
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What is the range of anatomy that should be covered for examination of one intervertebral disk space?
a. from the pedicle of the vertebra above the disk to the pedicle of the vertebra below the disk b.from the spinous process of the vertebra above the disk to the spinous process of the vertebra below the disk c. from the apophyseal joint above the disk to the apophyseal joint of the vertebra below the disk d. from the superior articular process of the vertebra above the disk to the superior articular process of the vertebra below the disk |
a. from the pedicle of the vertebra above the disk to the pedicle of the vertebra below the disk
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Which of the following would NOT enhance during the first several minutes of a post-contrast CT study of the neck?
a. vascular lesion b. lymph nodes c. jugular vein d. internal carotid artery |
b. lymph nodes
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Which of the following types of contrast media has NO application for a CT study of the thoracic spine?
1. intrathecal 2. intravenous 3. oral a. 1 only b. 2 only c. 3 only d. 1, 2 & 3 |
c. 3 only
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In which of the following studies might cranial nerve XI be visualized?
a. soft tissue neck b. lumbosacral spine c. supratentorium d. internal auditory canal |
a. soft tissue neck
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In order to generate a 3D shaded surface rendering of the hips, the _______________ data is used directly by the 3D reconstruction software.
a. image b. raw c. unreconstructed d. projection |
a. image
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Which of the following is the appropriate range of coverage for a coronal sinus study?
a. from the internal auditory canals to the ethmoid sinus b. from the clivus to the anterior clinoid process c. from the fourth ventricle to the sphenoid sinus d. from the dorsum sella to the anterior aspect of the frontal sinus |
d. from the dorsum sella to the anterior aspect of the frontal sinus
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Which of the following is NOT a reason for using thinner slices in the posterior fossa compared with the more superior regions of the brain?
1. to reduce streak artifacts 2. to improve spatial resolution 3. to decrease radiation dose to the patient a. 1 only b. 2 only c. 3 only d. 1, 2 & 3 |
c. 3 only
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A localizer image in which of the following orientations should be used to set up axial slices so that they can be angled parallel to the plane of a specific lumbar disk?
a. AP b. transverse c. oblique d. lateral |
d. lateral
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Which of the following statements is TRUE regarding CT exams of the spine?
1. IV contrast is usually not administered to rule out a herniated disk 2. the entire thoracic spine is not routinely scanned with transverse CT slices 3. sagittal and coronal images of an adult spine may not be directly collected from a CT scan a. 1 only b. 2 only c. 3 only d. 1, 2 & 3 |
d. 1, 2 & 3
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If the mastoid air cells have a gray signal intensity, what abnormality is suggested?
a. traumatic injury b. acoustic neuroma c. mastoiditis d. sinusitis |
c. mastoiditis
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During a CT exam of the soft tissue neck, which of the following would NOT enhance when iodinated IV contrast is administered?
a. vertebral arteries b. lymph nodes c. internal carotid artery d. jugular vein |
b. lymph nodes
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In which of the following studies might cranial nerve VII be visualized?
a. internal auditory canal b. cervical spine c. soft tissue neck d. supratentorium |
a. internal auditory canal
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If we want to generate a diagnostic 3D surface reconstruction of the affected region of the cervical spine, how should the scan be performed?
a. at orthogonal orientations through the affected region b. with fairly large gaps between the slices c. at various angles through each affected disk space d. at a single angle through the affected region |
d. at a single angle through the affected region
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Which of the following positions may reduce the lordotic curve, when performing a CT scan on the lumbosacral spine?
a. prone with knees bent over a wedge b. right decubitus position c. prone with knees straight d. supine with knees bent over a wedge |
d. supine with knees bent over a wedge
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Which of the following should be removed for a study of the sinuses?
1. barettes 2. eyeglasses 3. nose ring a. 1 only b. 2 only c. 3 only d. 1, 2 & 3 |
d. 1, 2 & 3
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For CT brain scans, the reference line for axial slices may be which of the following?
1. cantomeatal line 2. orbitomeatal line 3. infraorbitomeatal line a. 1 only b. 2 only c. 3 only d. 1, 2 & 3 |
d. 1, 2 & 3
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How should the mAs be varied to compensate for an increase in apparent image noise caused by reducing the slice thickness?
a. halve the mA and halve the scan time b. halve the mA and double the scan time c. decrease mAs d. increase mAs |
d. increase mAs
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For which of the following conditions of the brain should IV contrast NOT be administered?
a. suspected atrophy b. evaluation of an aneurysm c. recurrent headaches d. evaluation of a mass |
a. suspected atrophy
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