ESTUDY
MRI REGISTRY TEST #1 EXAM STUDY MATERIALS
QUESTION AND ANSWERS (VERIFIED ANSWERS)
1. Which of the following implants may cause issues during scanning?
- a. Implantable drug infusion pumps
- b. Cardiac pacemakers/breast tissue expanders
- c. Bone growth stimulators
- d. All of the above
**Answer: d. All of the above**
2. What problems might occur if you scan a patient with a cardiac pacemaker?
- a. Changes in pacemaker programming
- b. Induced current in the lead wire/patient burns
- c. Pacemaker could become dislodged and pulled from the chest
**Answer: a. Changes in pacemaker programming; b. Induced current in the lead wire/patient burns**
3. Which method is acceptable for checking if accessory devices contain ferrous materials?
- a. Check the weight
- b. Use a hand-held magnet
- c. Look at the manufacturer label
- d. Take the device into the scanning room
,ESTUDY
**Answer: b. Use a hand-held magnet**
4. What type of reaction to contrast involves respiratory, cardiovascular, cutaneous, and possibly
gastrointestinal symptoms?
- **Answer: Anaphylactoid**
5. Which factors influence the physiological response to induced voltage?
- a. Orientation of gradient field
- b. Patient's size
- c. Frequency of stimulus
- d. All of the above
**Answer: d. All of the above**
6. What are magnetophosphenes?
- **Answer: Visual sensations or flashes of light caused by gradient magnetic fields**
7. What is the FDA recommended safe SAR level for the head?
- **Answer: 3W/kg**
8. Compared to conventional SE sequences, fast pulse sequences like FSE or TSE have:
- **Answer: Increased RF deposition**
9. Anesthesiologists use ___ to monitor sedated or anesthetized patients as a standard practice.
- **Answer: Pulse Ox**
, ESTUDY
10. After contrast injection, paramagnetic contrast agents affect tissue by:
- **Answer: Decreasing T1 and T2 relaxation times**
11. Which of the following contrast agents is an ionic compound?
- a. Mag
- b. Prohance
- c. Omniscan
- d. None of the above
**Answer: d. None of the above**
12. Which patients are most likely to have a serious reaction to contrast injection?
- a. Asthma/allergic respiratory disorders
- b. High BUN levels
- c. Anemic patients
- d. Claustrophobics
**Answer: a. Asthma/allergic respiratory disorders**
13. Which position best shows the collateral ligaments of the knee?
- **Answer: Coronal (COR)**
14. What is the major advantage of using a surface coil?
- **Answer: Increased SNR (Signal-to-Noise Ratio)**
MRI REGISTRY TEST #1 EXAM STUDY MATERIALS
QUESTION AND ANSWERS (VERIFIED ANSWERS)
1. Which of the following implants may cause issues during scanning?
- a. Implantable drug infusion pumps
- b. Cardiac pacemakers/breast tissue expanders
- c. Bone growth stimulators
- d. All of the above
**Answer: d. All of the above**
2. What problems might occur if you scan a patient with a cardiac pacemaker?
- a. Changes in pacemaker programming
- b. Induced current in the lead wire/patient burns
- c. Pacemaker could become dislodged and pulled from the chest
**Answer: a. Changes in pacemaker programming; b. Induced current in the lead wire/patient burns**
3. Which method is acceptable for checking if accessory devices contain ferrous materials?
- a. Check the weight
- b. Use a hand-held magnet
- c. Look at the manufacturer label
- d. Take the device into the scanning room
,ESTUDY
**Answer: b. Use a hand-held magnet**
4. What type of reaction to contrast involves respiratory, cardiovascular, cutaneous, and possibly
gastrointestinal symptoms?
- **Answer: Anaphylactoid**
5. Which factors influence the physiological response to induced voltage?
- a. Orientation of gradient field
- b. Patient's size
- c. Frequency of stimulus
- d. All of the above
**Answer: d. All of the above**
6. What are magnetophosphenes?
- **Answer: Visual sensations or flashes of light caused by gradient magnetic fields**
7. What is the FDA recommended safe SAR level for the head?
- **Answer: 3W/kg**
8. Compared to conventional SE sequences, fast pulse sequences like FSE or TSE have:
- **Answer: Increased RF deposition**
9. Anesthesiologists use ___ to monitor sedated or anesthetized patients as a standard practice.
- **Answer: Pulse Ox**
, ESTUDY
10. After contrast injection, paramagnetic contrast agents affect tissue by:
- **Answer: Decreasing T1 and T2 relaxation times**
11. Which of the following contrast agents is an ionic compound?
- a. Mag
- b. Prohance
- c. Omniscan
- d. None of the above
**Answer: d. None of the above**
12. Which patients are most likely to have a serious reaction to contrast injection?
- a. Asthma/allergic respiratory disorders
- b. High BUN levels
- c. Anemic patients
- d. Claustrophobics
**Answer: a. Asthma/allergic respiratory disorders**
13. Which position best shows the collateral ligaments of the knee?
- **Answer: Coronal (COR)**
14. What is the major advantage of using a surface coil?
- **Answer: Increased SNR (Signal-to-Noise Ratio)**
