CT Basics

82 Questions | Total Attempts: 443

SettingsSettingsSettings
Please wait...
Computed Tomography Quizzes & Trivia

Computed tomography review


Questions and Answers
  • 1. 
    All human  tissues and organs originates from primary germ layers.which germ layer forms the central nervous system
    • A. 

      Endoderm

    • B. 

      Macroderm

    • C. 

      Mesoderm

    • D. 

      Ectoderm

  • 2. 
    Which cranial nerve has the widest distribution
    • A. 

      Trigeminal

    • B. 

      Hypoglossal

    • C. 

      Vagus

    • D. 

      Glossopharyngial

  • 3. 
    What is an important funtion of the choroid plexus
    • A. 

      Separates the cerebral hemispheres

    • B. 

      To protect the brains surface

    • C. 

      To produce cerebral spinal fluid

    • D. 

      To provide comunication between right and left cerebellum

  • 4. 
    The normal range of respiration for an adult is
    • A. 

      5-10 breaths per minute

    • B. 

      12-20 breaths per minute

    • C. 

      20-30 breaths per minute

    • D. 

      35-50 breaths per minute

  • 5. 
    Which of the following is a parenteral route of medication administration
    • A. 

      Sublingual

    • B. 

      Intramuccular

    • C. 

      Transdermal

    • D. 

      Oral

  • 6. 
    The preparation for a contrast ct exam of a patient with a prior alergic reaction may include
    • A. 

      Premedication with steroids and antihestamines

    • B. 

      A negative contrast agent

    • C. 

      Increase of fluid intake for 24 hours

    • D. 

      Refraining from urinating for 2 hours before the test

  • 7. 
    A common injection site for contrast would be
    • A. 

      Cephalic vein

    • B. 

      Antecubital vein

    • C. 

      Basilic vein

    • D. 

      All of the above

  • 8. 
    Which of these technical factors would directly effect patient dose
    • A. 

      Matrix size

    • B. 

      Algorithm

    • C. 

      Mas

    • D. 

      Window level

  • 9. 
    Preleminary questions before injection of iv contrast would include1. renal function2. allergic history3 cardiac history
    • A. 

      1 only

    • B. 

      1 and 2 only

    • C. 

      3 only

    • D. 

      1, 2, and 3

  • 10. 
    The term__________ refers to the number of ions formed when a substance disassociates in solution. it is used to determine the biological effects of iv contrast
    • A. 

      Concentration

    • B. 

      Osmolality

    • C. 

      Solubility

    • D. 

      Iodination

  • 11. 
    Which of the following lab values can be used to eval renal function
    • A. 

      Bun

    • B. 

      Creatinine

    • C. 

      Ptt

    • D. 

      A&b

  • 12. 
    An infection a patient aquires during their hospital (common to that hospital) stay is called
    • A. 

      Blood-borne

    • B. 

      Nosocomial

    • C. 

      Iatrogenic

    • D. 

      Staphylococcal

  • 13. 
    A contrast material that does not dissassotiate into charged particles in solution is called
    • A. 

      Neutral

    • B. 

      Non ionic

    • C. 

      Osmolar

    • D. 

      Ionic

  • 14. 
    The average range for adult bun levels is
    • A. 

      1-4 mg/dl

    • B. 

      5-20 mg/dl

    • C. 

      23-30 mg/dl

    • D. 

      45-60mg/dl

  • 15. 
    A condition in which cerebral ischemia is caused by systemic hypotention
    • A. 

      Vasovagal reaction

    • B. 

      Myocardial infarction

    • C. 

      Transient ischemic attack

    • D. 

      Hydrocephalus

  • 16. 
    Which interaction between xray beam and matter results in the largest pt. dose
    • A. 

      Characteristic

    • B. 

      Compton's scatter

    • C. 

      Bremsstrahlung

    • D. 

      Photoelectric effect

  • 17. 
    What is a common medication used to sedate small children in order to do a ct exam
    • A. 

      Chloral hydrate

    • B. 

      Lithium

    • C. 

      Diazipam(valium)

    • D. 

      Secobarbital sodium

  • 18. 
    The purpose of iv contrast adminisration is
    • A. 

      Increase the contrast of adjacent structures

    • B. 

      Increase beam attenuation of enhanced structures

    • C. 

      Increase the cost to the patient

    • D. 

      A and b

  • 19. 
    The adult spinal cord ends at what vertebral level
    • A. 

      L1-2

    • B. 

      Ll3-4

    • C. 

      L5

    • D. 

      Superior portion of the coccyx

  • 20. 
    The portion of the nephron that filters waste material from the blood plasma is
    • A. 

      Afferent arteriole

    • B. 

      Proximal tubule

    • C. 

      Efferent arteriole

    • D. 

      Glomerulus

  • 21. 
    Which of the paranasal sinuses is the last to develope
    • A. 

      Frontal

    • B. 

      Ethmoidal

    • C. 

      Sphenoidal

    • D. 

      Maxillary

  • 22. 
    What is an important function of the choroid plexus
    • A. 

      To divide the cerebellum

    • B. 

      To produce cerebrospinal fluid

    • C. 

      To protect the brain

    • D. 

      To provide comunication between the cerebella and cerebrum

  • 23. 
    What is the only movable joint in the cranium
    • A. 

      Maxilary

    • B. 

      Zigomatic

    • C. 

      Temporomandibular

    • D. 

      Sphenomandibular

  • 24. 
    Which gland can be palpated by placing the index and middle fingers just anterior and inferior to the earlobe
    • A. 

      Parotid

    • B. 

      Parathyroid

    • C. 

      Submandibular

    • D. 

      Sublingual

  • 25. 
    The digital to analog converter insures that the data is free from artifacts and contain enough usable data. this is known as
    • A. 

      Formatting

    • B. 

      Continuoussampling

    • C. 

      Quality conversion

    • D. 

      Preprocessing