MRSO Prep Test Questions and Answers Test Bundle

What pulse sequence will produce the most patient heating? A. Inverse recovery sequence B. Single shot fast spin echo C. Conventional spin echo D. Gradient Echo - B. Single shot fast spin echo During acquisition, it is noticed that the T wave of the cardiac cycle is elevated. What is thi...

Zero Boil-Off - System that reduces/eliminates the need to recharge Helium in a magnet. Quench - Quickly eliminating the magnetic field. Not immediate, takes 3 to 5 minutes to completely eliminate magnetic field. Loud Noise as Helium rushes out of Quench Vent. Can cause crack in th...

The control room is found where? a. Zone I b. Zone II c. Zone III d. Zone IV - C. Zone III Which of the following describe when a non-ferrous object is repulsed by static magnetic field? a. Fourier transformation b. Lenz's force c. Ohm's law d. Larmor equation - b. Lenz's force...

What is the name of the gradient coil used to produce sagittal and coronal images? a. Transverse coil b. Golay coil c. Maxwell coil d. Receiver coil - ️️ b. Golay coil ("saddle coil") Which of the following is able to handle the most RF heating? a. elderly b. adult c. obese adult ...

How do magnetic flux lines travel? A. North to South B. South to North C. East to West D. West to East - A North to South Which of the following can be potential safety concerns to a patient in the static magnetic field? A. Electrically conductive materials B. Ferrous objects C. Magneti...

All MR medical directors must report incidents to which of the following? a. FDA Medwatch Program b. ACR MR safety board c. None of the choices d. All of the choices - a. FDA Medwatch Program Which of the following is not true? a. Screening process for non-MR personnel and MR personnel sh...

Which of the following describe when a non-ferrous object is repulsed by static magnetic field? a. Fourier transformation b. Lenz's force c. Ohm's law d. Larmor equation - b. Lenz's force What is the FDA SAR limit for the whole body in first level controlled operating mode? a. 8 W/kg...

Slew rate - Speed at which gradient coil turns on and off Time-varying Gradient - Induced current in a patient Magnetic Flux Lines - Travel from North to South pole permanent magnet - Can not be turned off Very inexpensive; extremely heavy Approximately 0.4T Vertical vector ...

IEC DB/DBA limits for MRI - 140 DB 99 DBA parameters to reduce noise in MRI - -thicker slices -larger FOV -smaller matrix -parallel imaging -reducing bandwidth (increasing TE) -active noise reduction -Low SAR RF mode (increase in echo spacing)-thicker slices MRI sequence that produ...

The quench vent in the MR room should be inspected by who? a. facility engineers b. manufacturer engineers c. MR tech d. MRMD - b. manufacturer engineers The quench vent outside the MR facility is inspected by who? a. facility engineers b. manufacture engineer c. MR tech d. MRMD - a...

Purpose of RF (B1) field - excite hydrogen protons RF energy is absorbed by tissues - within the volume of the RF transmit coil. This is a thermogenic process. Thermogenic process - Results in production of heat. Ex: RF energy absorption MRI local and whole-body tissue heating is d...

Which of the following are physiologic factors that occur from an anaphylactic reaction? Select all that apply. a. Elevated creatinine levels b. Vasodilation c. Bronchial smooth muscle contraction d. Increased vascular permeability - b, c, d A non-emergent quench can take approximately h...

Static field metrics - 1T = 10,000G (0.5mT = 5G) Who published guidelines titled "Criteria for Significant Risk" that specifies what qualifies as significant risk of exposure to magnetic field associated with MRI. - FDA FDA guidelines state EXPOSURE to a static field that does not p...

What group issued the ACR white paper MRI safety? a. Food and drug association. b. OSHA c. EPA d. American college of radiology blue ribbon panel on MR safety. - d. American college of radiology blue ribbon panel on MR safety. This individual must have an in-depth understanding of the risk...