Study Guide 6_7.txt

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DTJones2011
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70709
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Study Guide 6_7.txt
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2011-03-08 19:38:38
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CT Review CT Exam Anatomy Part II
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CT Review CT Exam and Anatomy Part I and II
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  1. 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 and 3
    b
  2. Which scanning plane is best for evaluating the anatomical relationship between the pituitary adn the sella turcia?
    a. transverse
    b. oblique between transverse and sagittal
    c. coronal
    d. sagital
    c
  3. 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
  4. 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
  5. Which of the following types of contrast media has NO application for a CT study of the thoracic spine?
    1. intrathecal
    2. intervenous
    3. oral
    a. 1 only
    b. 2 only
    c. 3 only
    d. 1, 2 and 3
    c
  6. In which of the following studies might cranial nerve XI be visualized?
    a. soft tissue neck
    b. lumboscaral spine
    c. supratentorium
    d. internal auditory canal
    a
  7. 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
  8. 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
  9. 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. the decrease radiation dose to the patient
    a. 1 only
    b. 2 only
    c. 3 only
    d. 1, 2 and 3
    c
  10. A localizer image in which of the following orientatrions 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
  11. Which of the following statements is TRUE regarding CT exam of the spine?
    1. IV contrast is usually not administered to rule out a hemiated disck
    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 and 3
    d
  12. 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
  13. 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
  14. 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
  15. 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 and 3
    d
  16. 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 and 3
    d
  17. 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. decrase mAs
    d. increase mAs
    d
  18. 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
  19. Which of the following is NOT an indication of a herniated disk?
    1. deformity of the posterior border of the disk
    2. displacement of epidural fat
    3. hypertrophy of the inferior articulating process and lamina
    a. 1 only
    b. 2 only
    c. 3 only
    d. 1, 2 and 3
    c
  20. On a CTA exam of lower extermity vasculature to assess atherosclerosis, coverage should extend from the _____ to the _____.
    a. abdominal aorta, ankles
    b. abdominal aorta, iliac arterier
    c. ilial arteries, femoral arteries
    d. iliac arteries, popliteal arteries
    a
  21. What is the primary reason to have a patient phonate the letter "e" during a CT exam of the larynx?
    a. it clases the pyriform sinuses
    b. it demonstrates vocal cord mobility
    c. it distends the laryngeal ventricles
    d. it provides definition of the epiglottis
    b
  22. Which of the following combinations of scanning parameters is best for evaluation abnormalities within the petrous pyramids of the temporal bones?
    a. sharp algorithm, window width = 2500, 0.5 to 3 mm slices
    b. standard algorithm, window width = 2500, 4 to 8 mm slices
    c. standard algorithm, window width = 300, 0.5 to 3 mm slices
    d. soft algorithm, window width = 300, 0.5 to 3 mm slices
    a
  23. Which of the following window settings provides the best tissue defferentiation of the soft tissues of the supratentorium?
    a. window width = 1000, window level = 200
    b. window width = 300, window level = 60
    c. window width = 2500, window level = 350
    d. window width = 100, window level = 30
    d
  24. Which of the following is a tchnique used to minimize artifacts from patient motion in exams of the chest?
    1. suspended respiration
    2. shortened scan time
    3. patient immobilization devices
    a. 1 only
    b. 2 only
    c. 3 only
    d. 1, 2 and 3
    d
  25. Which of the following is NOT contained within the mediastinum?
    a. esophagus
    b. heart
    c. bronchi
    d. lungs
    d
  26. For CT exams of the chest, the patient is usually positioned:
    a. feet-first and prone
    b. feet-first and supine
    c. head-first and decubitus
    d. head-first and supine
    d
  27. Typically, what mAs is used in routine CT exams of the abdomen?
    a. 100 to 200
    b. 200 to 300
    c. 300 to 400
    d. 400 to 500
    b
  28. Which of the following is the typical scan delay after the initiation of injection of contrast media for studies of the liver?
    a. 15 to 25 seconds
    b. 65 to 75 seconds
    c. 85 to 95 seconds
    d. a few minutes
    b
  29. Which of the following window settings provides the best tissue differentiation within the liver?
    a. window width = 100, window level = -200
    b. window width = 140, window level = 60
    c. window width = 1000, window level = 200
    d. window width = 2500, window level = 350
    b
  30. For a CT scan of the spleen, which of the following is typically used?
    a. only IV contrast media
    b. only oral contrast media
    c. both oral and IV contrast media
    d. no contrast media is used
    c
  31. Which of the following strucures is NOT part of the GI tract?
    a. esophagus
    b. stomach
    c. duodenum
    d. spleen
    d
  32. For a routine CT exam of the pelvis, what gantry tilt is used?
    a. 20*
    b. -20*
    c. 10*
    d. no tilt is used
    d
  33. Which of the following are typical start and end locations for CT scans of the pelvis?
    a. from the xyphoid process through the iliac crest
    b. from the sternal notch through the iliac crest
    c. from the iliac crest throught he symphysis pubis
    d. from the sternal notch through the symphysis pubis
    c
  34. Which of the following provides the best bone window setting for the pelvis?
    a. window width = 2000, window level = 350
    b. window width = 140, window level = 60
    c. window width = 100, window level = -200
    d. window width = 1000, window level = 200
    a
  35. Which of the following is a reason for inserting a tampon in the vagina for CT exams of the female pelvis?
    a. provides a high intensity on the image
    b. eliminated the need for IV contrast injection
    c. eliminates the need for oral contrast media
    d. helps visualize the vaginal canal
    d
  36. For which of the following studies in the chest is IV contrast typically used?
    1. chest masses
    2. hilar masses
    3. cardiac masses
    a. 1 only
    b. 2 only
    c. 3 only
    d. 1, 2 and 3
    d
  37. Which of the following is the typical orientation for a localizer in a chest exam?
    a. AP
    b. transverse
    c. lateral
    d. oblique
    a
  38. The result of the bifuration of the abdominal aorta is the left and right _____ arteries.
    a. femoral
    b. common iliac
    c. poplitela
    d. quadriceps
    b
  39. Which of the following statements is TRUE concerning the lobes of the liver?
    1. the left lobe is more anterior than the right lobe
    2. the left lobe is more anterior than the caudate lobe
    3. the caudate lobe is more medial than the right
    a. 1 only
    b. 2 only
    c. 3 only
    d. 1, 2 and 3
    d
  40. What window width and window level were most likely used in the image of abdominal liver, spleen, and stomach with contrast?
    a. window width = 1000, window level = 200
    b. window width = 100, window level = -200
    c. window width = 300, window level = 40
    d. window width = 2500, window level = 350
    c

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