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MRI Quiz - Level One
Choose the correct answer for each question.
1) Increasing the magnetic field?
produuces less susceptibility artifacts.
Reduces the risk of tissue heating.
Increase the signal to noise.
Reduces the danger from metallic projectiles.
2) A major advantage of MRI is:
the ease with which equipment is updated or replaced.
its relatively low cost, compared to CT scans.
dose not require specialized room
the ability to reposition the 'cross-section' through the body without repositioning the patient.
3) A growing application of MRI is "MRA", which stands for:
Magnetic Resonance Amplication
Magnetic Resonance Angiography
Minimal Radiology Applications
Medical Research Assistance
4) What does "MRI" stand for?
Magneto-Ray Idometry
Medical Radiometry Instrument
Magnetic Resonance Imaging
Maximal Radiology Imaging
5) True or False - T1 increases with magnetic field.
False
True
6) What is a major health concern wth MRI?
Reaction to applied drugs
extrerme cold?
Radiation dose
localized burns due to metallic implants?
7) Compare MRI to CT ("CAT scans"). Which is true?
Both methods use X-rays, but exposure is higher with CT.
CT reveals soft structures, while MRI is better at dense material, such as bone.
Both methods produce cross-sectional images at a specified plane through the body.
8) Select one of the following objects that you think would alwasy be safe in the MRI suite.
A wheelchair
A stretcher
Scissors
None of the listed
9) True or False - T1 relaxation is shorter than T2 relaxation.
False
True
10) What is the maximum stength of magnet approved for medical imaging of patient?
7.0 T
1.5 T
5.0 T
3.0 T