Contrast media 3

1. Contrast media 3

3. REVIEW • TYPES OF CONTRAST & USES • ADVERSE AFFECTS OF CONTRAST USAGE • CONTRAINDICATIONS FOR CONTRAST

4. Review Questions Ch 19 RTA Book - Pg 373 +

5. Contrast media are used in radiographic imaging to a) increase the radiographic density of the area of interest b) enhance the subject contrast of the area of interest c) decrease the radiographic density of the area of interest d) lower the subject contrast of the area of interest

6. Contrast media are used in radiographic imaging to a) increase the radiographic density of the area of interest b) enhance the subject contrast of the area of interest c) decrease the radiographic density of the area of interest d) lower the subject contrast of the area of interest

7. Radiographic images that demonstrate few density differences define a) low subject contrast b) high subject contrast c) low x-ray photon absorption d) high x-ray photon absorption

8. Radiographic images that demonstrate few density differences define a) low subject contrast b) high subject contrast c) low x-ray photon absorption d) high x-ray photon absorption

9. A negative contrast agent will a) increase density and is radiopaque b) decrease density and is radiopaque c) decrease density and is radiolucent d) increase density and is radiolucent

10. A negative contrast agent will a) increase density and is radiopaque b) decrease density and is radiopaque c) decrease density and is radiolucent d) increase density and is radiolucent

11. Perforation of the colon during a lower GI barium study may result in complications resulting from a) flocculation b) bronchospasm c) convulsion d) extravasation

12. Perforation of the colon during a lower GI barium study may result in complications resulting from a) flocculation b) bronchospasm c) convulsion d) extravasation

13. Depending on the environment of the barium sulfate,such as acid in the stomach, the powder may have a tendency to clump – this is called a) flocculation b) bronchospasm c) convulsion d) extravasation

14. Depending on the environment of the barium sulfate,such as acid in the stomach, the powder may have a tendency to clump – this is called a) flocculation b) bronchospasm c) convulsion d) extravasation

15. 4. Perforation of the vessel while injecting a contrast media may resulting in a) flocculation b) bronchospasm c) convulsion d) extravasation

16. Perforation of the vessel while injecting a contrast media may resulting in a) flocculation b) bronchospasm c) convulsion d) extravasation

17. Barium sulfate: 1. is filtered by the kidneys 2. is absorbed by the stomach 3. coats the gastrointestinal lining 4. is absorbed by the jejunum

18. Barium sulfate: 1. is filtered by the kidneys 2. is absorbed by the stomach 3. coats the gastrointestinal lining 4. is absorbed by the jejunum

19. High atomic number elements absorb x-rays at a greater rate than low atomic number elements. 1. true 2. false

20. 6. High atomic number elements absorb x-rays at a greater rate than low atomic number elements. 1. true 2. false

21. Barium sulfate is contraindicated if the patient is suspected of having a gastrointestinal tract perforation. 1. true 2. false

22. Barium sulfate is contraindicated if the patient is suspected of having a gastrointestinal tract perforation. 1. true 2. false

23. Radiolucent contrast media: 1. are positive contrast agents 2. appear dark on radiographs 3. are composed of elements with high atomic numbers 4. none of the above

24. Radiolucent contrast media: 1. are positive contrast agents 2. appear dark on radiographs 3. are composed of elements with high atomic numbers 4. none of the above

25. Radiopaque contrast media: 1. are positive contrast agents 2. appear light on radiographs 3. are composed of elements with high atomic numbers 4. all the above

26. Radiopaque contrast media: 1. are positive contrast agents 2. appear light on radiographs 3. are composed of elements with high atomic numbers 4. all the above

27. Each of the following is an example of a negative contrast media except: 1. air 2. soda water 3. barium sulfate 4. gas-producing crystals

28. Each of the following is an example of a negative contrast media except: 1. air 2. soda water 3. barium sulfate 4. gas-producing crystals

29. An air embolus can form as a complication of negative contrast media administration. 1. true 2. false

30. An air embolus can form as a complication of negative contrast media administration. 1. true 2. false

31. An fat embolus can form as a complication of AN OIL BASED contrast media administration. 1. true 2. false

32. An fat embolus can form as a complication of AN OIL BASED contrast media administration. 1. true 2. false

33. Ionic contrast media dissociates into two molecular particles in blood plasma. 1. true 2. false

34. Ionic contrast media dissociates into two molecular particles in blood plasma. 1. true 2. false

35. Most adverse reactions associated with Ionic contrast media are significantly decreased with the non-ionic contrast media 1. true 2. false

36. Most adverse reactions associated with Ionic contrast media are significantly decreased with the non-ionic contrast media 1. true 2. false

37. Which of the following acute reactions to contrast media usually requires no medical treatment? a) bronchospasm b) laryngeal edema c) urticaria d) convulsions

38. Which of the following acute reactions to contrast media usually requires no medical treatment? a) bronchospasm b) laryngeal edema c) urticaria d) convulsions

39. Which of the following acute reactions to contrast media usually requires immediate medical treatment? a) Bronchospasm / laryngeal edema b) Nausea & Vomiting c) Urticaria d) Warn flush /metallic taste

40. Which of the following acute reactions to contrast media usually requires immediate medical treatment? a) Bronchospasm / laryngeal edema b) Nausea & Vomiting c) urticaria d) Warn flush /metallic taste

41. What can be done for a patient who will receive water- soluble iodine contrast media to reduce allergic-like effects? a) premedicate with steroids and antihistamines b) give intravenous fluids c) instruct the patient to drink warm salt water before the procedure d) give a negative contrast agent with the iodinated medium

42. What can be done for a patient who will receive water- soluble iodine contrast media to reduce allergic-like effects? • premedicate with steroids and antihistamines b) give intravenous fluids c) instruct the patient to drink warm salt water before the procedure d) give a negative contrast agent with the iodinated medium

43. When you schedule multiple procedures, what examination is usually done last? a) thyroid function tests b) Upper GI c) air-contrast colon (BE-AC) d) Intravenous pyelogram (IVP)

44. When you schedule multiple procedures, what examination is usually done last? a) thyroid function tests b) Upper GI c) air-contrast colon (BE-AC) d) Intravenous pyelogram (IVP) It will take the BA the longest to travel through the GI tract

45. When you schedule multiple procedures, using contrast media – which examination must be done first? a) thyroid function tests (Nuc Med) b) Upper GI c) air-contrast colon (BE-AC) d) Intravenous pyelogram (IVP)

46. When you schedule multiple procedures, using contrast media – which examination must be done first? a) thyroid function tests (Nuc Med) b) Upper GI c) air-contrast colon (BE-AC) d) Intravenous pyelogram (IVP) WHY?

47. End of Contrast Media for Special Procedures RT 255 -2008