MRSE Final Exam Comprehensive Resource To Help You
Ace 2026-2027 Exams Includes Frequently Tested
Questions With ELABORATED 100%
Correct COMPLETE SOLUTIONS
Guaranteed Pass First Attempt!! Current Update
1. How is the typical dose of gadolinium measured? - Correct Answer: The
typical dose is measured in millimoles per kilogram, typically ranging from
0.1 to 0.3 millimoles per kilogram.
2. What factors influence the amount of heating produced in patients during
an MRI? - Correct Answer: Factors include body habitus, surface area to
body mass ratio, body weight, sex, age, and patient height.
3. Why do obese patients produce more heating during an MRI? - Correct
Answer: Obese patients have more body mass than surface area, making it
difficult for their bodies to regulate temperature effectively.
4. How do infants' body characteristics affect heating during an MRI? -
Correct Answer: Infants have a large surface area relative to their body
mass, which means heating is less of a concern, but they may require
additional measures to regulate their temperature.
,5. What is one of the body's mechanisms for regulating temperature? -
Correct Answer: Evaporation, such as sweating when body temperature
increases, is one mechanism.
6. What are the units for spatial field gradient? - Correct Answer: T/m or
G/cm
7. What is the whole body SAR limit in normal operating mode? - Correct
Answer: 2 W/kg
8. What is the whole body SAR limit in first level control mode? - Correct
Answer: 4 W/kg
9. How does the spin echo pulse sequence affect patient heating? -
Correct Answer: It uses a 90° excitation RF pulse followed by 180°
refocusing pulses, which can increase heating.
10.What is B1+rms? - Correct Answer: The rms value of the transmitted B1
RF energy averaged over 10s
11.What is the energy relationship between 90° and 180° RF pulses? -
Correct Answer: A 180° RF pulse contains four times the energy of a 90° RF
pulse.
, 12.What is a gradient echo pulse sequence? - Correct Answer: A pulse
sequence that uses a flip angle excitation RF pulse without 180° refocusing
pulses, potentially reducing heating.
13.How can increasing repetition time help reduce patient heating? -
Correct Answer: It allows more heat to be released from patients by
increasing the time between excitation pulses.
14.What is the effect of concatenations on specific absorption rate? -
Correct Answer: Using concatenations allows echoes to be collected over
multiple repetition times, helping to lower SAR.
15.What is parallel imaging in MRI? - Correct Answer: A technique that
uses multiple coil elements to collect echoes individually, reducing the
number of RF pulses needed.
16.Can a patient be scanned with implanted or external insulin pumps? -
Correct Answer: MRI is contraindicated if the patient has an implanted
insulin pump. External pumps must be removed before scanning.
17.What is the MR safety rating for passive implanted devices? - Correct
Answer: MR Conditional or MR Unsafe, if they contain metal. Nonmetallic,
nonconducting, nonmagnetic passive implants can be MR Safe
18.What should be done if it is unclear whether a patient has an implanted
intracranial aneurism clip? - Correct Answer: Obtain a radiograph or CT
Ace 2026-2027 Exams Includes Frequently Tested
Questions With ELABORATED 100%
Correct COMPLETE SOLUTIONS
Guaranteed Pass First Attempt!! Current Update
1. How is the typical dose of gadolinium measured? - Correct Answer: The
typical dose is measured in millimoles per kilogram, typically ranging from
0.1 to 0.3 millimoles per kilogram.
2. What factors influence the amount of heating produced in patients during
an MRI? - Correct Answer: Factors include body habitus, surface area to
body mass ratio, body weight, sex, age, and patient height.
3. Why do obese patients produce more heating during an MRI? - Correct
Answer: Obese patients have more body mass than surface area, making it
difficult for their bodies to regulate temperature effectively.
4. How do infants' body characteristics affect heating during an MRI? -
Correct Answer: Infants have a large surface area relative to their body
mass, which means heating is less of a concern, but they may require
additional measures to regulate their temperature.
,5. What is one of the body's mechanisms for regulating temperature? -
Correct Answer: Evaporation, such as sweating when body temperature
increases, is one mechanism.
6. What are the units for spatial field gradient? - Correct Answer: T/m or
G/cm
7. What is the whole body SAR limit in normal operating mode? - Correct
Answer: 2 W/kg
8. What is the whole body SAR limit in first level control mode? - Correct
Answer: 4 W/kg
9. How does the spin echo pulse sequence affect patient heating? -
Correct Answer: It uses a 90° excitation RF pulse followed by 180°
refocusing pulses, which can increase heating.
10.What is B1+rms? - Correct Answer: The rms value of the transmitted B1
RF energy averaged over 10s
11.What is the energy relationship between 90° and 180° RF pulses? -
Correct Answer: A 180° RF pulse contains four times the energy of a 90° RF
pulse.
, 12.What is a gradient echo pulse sequence? - Correct Answer: A pulse
sequence that uses a flip angle excitation RF pulse without 180° refocusing
pulses, potentially reducing heating.
13.How can increasing repetition time help reduce patient heating? -
Correct Answer: It allows more heat to be released from patients by
increasing the time between excitation pulses.
14.What is the effect of concatenations on specific absorption rate? -
Correct Answer: Using concatenations allows echoes to be collected over
multiple repetition times, helping to lower SAR.
15.What is parallel imaging in MRI? - Correct Answer: A technique that
uses multiple coil elements to collect echoes individually, reducing the
number of RF pulses needed.
16.Can a patient be scanned with implanted or external insulin pumps? -
Correct Answer: MRI is contraindicated if the patient has an implanted
insulin pump. External pumps must be removed before scanning.
17.What is the MR safety rating for passive implanted devices? - Correct
Answer: MR Conditional or MR Unsafe, if they contain metal. Nonmetallic,
nonconducting, nonmagnetic passive implants can be MR Safe
18.What should be done if it is unclear whether a patient has an implanted
intracranial aneurism clip? - Correct Answer: Obtain a radiograph or CT
