MRT 249

  1. List the advantages of computed tomography over conventional radiography
    • CT guided optopsy and fluid drainage
    • 3 dimensional reconstruction
  2. whihc paranasal sinus is the most superior
    shpenoid sinus
  3. Between which bones is the coronal suture located
    between the frontal andn parietal bones
  4. Which paranasal sinus is the most inferior
    mazillary sinus
  5. which two bones form the zygomatic arch
    temporal and zygomatic bones
  6. What structrue creates the anterior boundary of the temporomandibular joint
    articular eminence
  7. Which structure forms the lateral border of the third ventricles
  8. Where is the falx cerbri found
    in the interhemispheric fissure
  9. What does the tentorium cerebelli divide
    • cerebellum and
    • occipital lobes of the cerebrum
  10. Which vessel is directly anterior to the pons
    basilar artery
  11. What two vessels does the posterior communicating artery join
    • posterior cerebral and
    • internal carotid artery
  12. State the flow of venous blood from the superior sagittal sinus to the internal jugular vein
    • superior sagittal sinus
    • to confluence of sinuses
    • to transverse sinus
    • to sigmoid sinus
    • to internal jugular notch
  13. Which arteries are found just lateral to the sella turcica
    internal carotid ateries
  14. Which skeletal structure is the confluence of sinuses associated with
    • occipital bone
    • internal occipital protruberance
  15. Which vessels are found in the frontal lobe of the brian close to the interhemispheric fissure
    anterior cerebral and anterior communicationg arteries
  16. Which venous sinus is found in the interhemispheric fissure
    superior sagittal sinus
  17. Where are the choroid plexuses found
    in all four ventricles
  18. Which ventricle is found anterior to the cerebullum and posterior to the pons
  19. What structure does the cerebral aqueduct pass through
  20. Which cranial line is used for positioning the head for a CT scan
  21. What is the gantry angle to the line for postitioning for the head
    15 to 20 caudad
  22. What is meant by a 1cm x 1cm scan
    scan thickness of 1cm with a slice interval of 1cm
  23. What is thenormal thickness of the slice for a routine head scan
  24. What is the normal thickness of the slice for a posterior fossa
  25. What is the normal thickness of the slice for the acquired images to produce a 3 D of the head
    1mm helical
  26. What is the normal thickness of the slice for sinuses
    1mm helical
  27. Sinus scans are taken in what imaging planes
    axial and coronal
  28. Why are different window widths and levels used for imaging of the head
    differentiate between bone and brain matter
  29. What is the purpose of injection intravenous contrast media for CT scans of the head
    differentiate between tumours of the head and vascular structures
  30. What skeletal structure in the cranium is the most inferior
    mastoid tip of the temporal
  31. The posterior cranial fossae contains the
    2 and 4
  32. The cerbral aqueduct joins the
    third and fourth ventricles
  33. At the level of the third ventricle which structure is the most lateral
    external capsule
  34. Which two vessels form the superior vena cava
    right andn left brachiocephalic veins
  35. Which structures is the most inferior in the skull
  36. on a axial slice at the level of T 12 which structure is posterior to the stomach
  37. Which lobe of the liver is just anterior to the inferior vena cava
  38. Which structure attaches the liver to the anterior wall of the abdomen
    Falciform ligament
  39. Which struture surrounds the head of the pancreas
  40. The stomach is seen at the level of T-----to L----
    • T11
    • L2
  41. Which structures will be seen in the portahepatis
    • Hepatic duct
    • Artery and vein
    • Portal vein ( nerves and lymphatics)
  42. Close to structure is the tail of the pancreas located
  43. Which structure is found between the liver and the right crus of the diaphragm
    • Right adrenal
    • or Suprarenal gland
  44. At which level would you see the hilum of the kidney
  45. The kidney will extend from T --- to L---
    • T12
    • L4
  46. The relationship of the aorta to the vertebrae
    Abdominal aorta is to the left and anterior to the lumbar vertebra
  47. Which is the first major branch of the abdominal aorta
    Celiac artery
  48. The superior mesenteric artery and vein are found directly poterior to which structrue at the level of L3
    Body of the pancreas
  49. At which level does the aorta divide into the common iliac arteries
  50. Relationship of the inferior vena cava to thel liver and lumbar vertebrae
    IVC is the right and anterior to the lumbar vertebrae
  51. The left renal vein passes posterior to the -------artery and anterior to the ---------- on its course from the left kidney
    • Superior mesenteric artery
    • Aorta
  52. At what level do the common iliac join to form the inferior vena cava
  53. Which muscle forms the anterior muscle wall of the abdomen
    Rectus abdominus
  54. Which muscle is found lateral to the lumbar vertebral bodies
  55. What is the slice thickness and interval distance for the kidney
    1cm x 1cm
  56. What is the slice thickness and interval distance for adrenal glands
    3mm x 5mm
  57. What is the slice thickness andn interval distance for general abdominal survay
    10mm x 15mm or 20 mm
  58. What are the WW and WL for viewing or filming the abdomen
    • WW 400
    • WL 35
  59. The purpose of the scout view
    To plot the scan program
  60. State the two types of images that can be produced for the scout view
    • AP
    • Lateral
  61. list the methods in which contrast can be introduced into the patient
    • Orally
    • rectally
    • Intravenously
  62. Explain osmolarity
    It is the number of particles in solution per kg of is largely responsible for the adverse effects of contrast .
  63. For a patient that has an allergy to iodinated contrast what type of oral contrast can be used
    Dilute barium sulfate solution
  64. What type of contrast has the least reactions and would be suitable for a patient presenting with renal insufficiency
    • Nonionic isomolar contrast
    • Eg. Iodixanol( visipaque)
  65. Describe the two types of contrast used for enhancing the gastrointestinal tract
    • barium sulphate or
    • oral iodinated contrast media
  66. Why is contrast media injected for abdominal scans
    To show up vascular structures collecting system of the urinary tract
  67. What are the early symptoms of anaphylaxis
    • Sense of warmth
    • tingling
    • itching of palms and soles
    • dysphagia
    • constriction of the throat
    • afeeling of doom
    • an expiratory wheeze
    • progression into laryngeal and bronchial edema
  68. What are some common reactions to the injection of contrast media and any treatment required
    • feeling of warmth
    • flushing
    • metalic taste
    • nausea
    • womiting
    • coughing
  69. If the patient experiences erythema or urticaria after the injection of contrast media what should the technologist do
    • Inform radiologist
    • can give patient benadryl( diphenhydramine)
  70. How long after the injection of contrast media may the patient still experience a reaction
    • Most reactions occur with in 5 minutes
    • Can occur within 30 minutes
    • or 24 hours
  71. Prior to the injection of iodinated contrast media which laboratory test results should be reviewed relating to kidney function
    Blood urea nitrogen (BUN) and creatine levels
  72. What post procedural care is recommended after the injection of iodinated contrast media
    The patient should be monitored for 20-30 minutes after and should increase fluid intake for 24-36 hours after the procedure
  73. What is a positive response to asthmatic attacks on a patient history questoinnaire and indication of
    The patient may be 3X more likely than others to respond to the contrast with an anaphylactoid reaction
  74. why must a patient with diabetes list medications containing metformin hydrochloride
    Patient can suffer acute renal failure
Card Set
MRT 249