MRSO Exam Questions with 100% Correct Answers

MRSO Exam Questions with 100% Correct Answers A force which aligns objects affected by the static magnetic field to its flux lines. - Rotational Force A form of energy that does not cause biological damage to tissues. - Non-Ionization A herrington rod is an example of what? A. Passive implant. B. Active implant. C. Both - A. Passive implant. A magnetic field unit of measurement. - Gauss A magnetic field vector that is horizontal. - Horizontal Static Magnetic Field A magnetic field vector that is vertical. - Vertical Static Magnetic Field A pain pump implant manufacture instruction says the following. The pump is located in the abdomen. Do not scan directly over the implant. Field strengths of 3T or less are safe. Limit heating to 2.2 W/kg or 0/7 deg. Celsius. You are scanning on a 3T scanner and are performing a carotid MRA exam. Which of he following precautions should you follow? I. Do not give contrast media. II. Stay in normal controlled operation mode. III. Scan patient in a 1.5 T scanner. IV. It is not safe to scan this patient. A. I,II,III B. IV C. II D. II, III - C. II A pair of saddle electromagnetic coils located on the right and left and anterior and posterior of the patient, which produce strong magnetic fields from left to right and posterior and anterior. - Golay Coil A patient comes down from the unit as an in-patient. The patient went to radiography to have a chest x-ray before coming to MRI. She needs to have a cervical MRI for severe pain. It is suspected that she may have a herniated disc. She checked to pacemaker, dentures and tattoos. You are scanning the patient's cervical spine in a 3.0T unit, with a receive only coil. What do you do next? A. Cancel the exam B. Review the x-ray with the radiologist C. Order an abdomen x-ray D. Scan the patient on a 1.5T unit. - B. Review the x-ray with the radiologist. A patient is being scanned with braces, which of the following is true? A. The risk for a burn is highly likley. B. The static magnetic field will produce enough translational and rotational force to cause harm to the patient. C. A significant artifact may be seen. D. All of the choices are true. - C. A significant artifact may be seen. A patient is placed in a magnetic field that changes over a distance from the MR unit. What do we need in order to meet the manufacture limits if a patient with an implant will be safe from the threats associated with the static magnetic field prior to their MRI. A. Spatial gradient map. B. Compression C. The MRSO sole approval. D. All of the choices. - A. Spatial gradient map A receiver coil that only detects signal emitted from the patient. - Receive Only Coil A receiver coil that produces RF energy and detects signal from the patient. - Transmit-Receive Coil A ring of electromagnetic coils located at the foot and head of the patient surrounding the gantry that produced a strong gradient magnetic field from head to foot. - Maxwell Coil A stronger attractive force than superparamagnetic but not as strong as ferromagnetism when placed in a strong static magnetic field. - Superparamagnetic A term used to describe body types based on shape and size. - Body Habitus A type of burn caused when the patients skin is found in the near field is called what? A. Loop burn B. Reflective C. Resonant D. Proximity - D. Proximity A Variable RF pulse that will tilt hydrogen away from the longitudinal axis less than 90 degrees. - Flip Angle A weakly repulsive force when placed in a strong static magnetic field. - Diamagnetism