MRI Safety & Patient Care
Following the HIPAA guidelines, you may give a patient's medical information to another employee:
a. if it is in plain sight on the MR console and the employee has already read it
b. if the employee is related to the patient
c. only if it is needed to do their job
d. to joke about the patient's excessive weight - Answer-c. only if it is needed to do their job
Which of the following ensures that the RF energy used in MRI does NOT interfere with local radio
stations?
1. magnetic shielding
2. actively shielded gradients
3. Faraday shielding - Answer-3. Faraday shielding
Which of the following statements is TRUE regarding SAR?
1. All MR systems have the same maximum SAR value.
2. The maximum SAR value for an MR system must not raise the patient's core body temperature by
more than 1° C.
3. The maximum RF energy allowed for a pulse sequence is independent of the patient's body weight -
Answer-2. The maximum SAR value for an MR system must not raise the patient's core body
temperature by more than 1° C.
Which of the following is TRUE of the American College of Radiology (ACR) labels assigned to personnel
working in or around the MRI suite?
, a. an MRI technologist is considered "Level 2" personnel
b. a radiologist is considered "Level 3" personnel
c. "Level 1" individuals may work in Zone IV areas
d. facility staff without any MRI training are considered "Level 1" personnel - Answer-c. "Level 1"
individuals may work in Zone IV areas
If the MR system indicates that a pulse sequence exceeds the SAR limit for a given patient, which of the
following strategies will reduce the amount of RF power being applied, and allow the sequence to run?
a. change the slice orientation
b. reduce the thickness of a saturation region
c. reduce the number of saturation regions
d. reduce the 2D slice thickness - Answer-c. reduce the number of saturation regions
The attractive force that an object experiences as a result of a magnetic field, from an MR system, is
dependent upon:
1. the ferromagnetic properties of the object
2. the magnetic field strength
3. the mass of the object - Answer-1, 2, and 3
A screening questionnaire for patients about to undergo an MRI exam should include questions
regarding which of the following?
1. pregnancy
2. prior injuries
Following the HIPAA guidelines, you may give a patient's medical information to another employee:
a. if it is in plain sight on the MR console and the employee has already read it
b. if the employee is related to the patient
c. only if it is needed to do their job
d. to joke about the patient's excessive weight - Answer-c. only if it is needed to do their job
Which of the following ensures that the RF energy used in MRI does NOT interfere with local radio
stations?
1. magnetic shielding
2. actively shielded gradients
3. Faraday shielding - Answer-3. Faraday shielding
Which of the following statements is TRUE regarding SAR?
1. All MR systems have the same maximum SAR value.
2. The maximum SAR value for an MR system must not raise the patient's core body temperature by
more than 1° C.
3. The maximum RF energy allowed for a pulse sequence is independent of the patient's body weight -
Answer-2. The maximum SAR value for an MR system must not raise the patient's core body
temperature by more than 1° C.
Which of the following is TRUE of the American College of Radiology (ACR) labels assigned to personnel
working in or around the MRI suite?
, a. an MRI technologist is considered "Level 2" personnel
b. a radiologist is considered "Level 3" personnel
c. "Level 1" individuals may work in Zone IV areas
d. facility staff without any MRI training are considered "Level 1" personnel - Answer-c. "Level 1"
individuals may work in Zone IV areas
If the MR system indicates that a pulse sequence exceeds the SAR limit for a given patient, which of the
following strategies will reduce the amount of RF power being applied, and allow the sequence to run?
a. change the slice orientation
b. reduce the thickness of a saturation region
c. reduce the number of saturation regions
d. reduce the 2D slice thickness - Answer-c. reduce the number of saturation regions
The attractive force that an object experiences as a result of a magnetic field, from an MR system, is
dependent upon:
1. the ferromagnetic properties of the object
2. the magnetic field strength
3. the mass of the object - Answer-1, 2, and 3
A screening questionnaire for patients about to undergo an MRI exam should include questions
regarding which of the following?
1. pregnancy
2. prior injuries
