Resistive magnet - Study guides, Class notes & Summaries

MRSO Mock Test 1 Questions with Correct A 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 - Answer-B. Single shot fast spin echo During acquisition, it is noticed that the T wave of the cardiac cycle is elevated. What is this artifact called? A. Magnetohydrodynamic Effect B. Excitation C. Teratogenesis D. Magnetophosphenes - Answer-A. Magnetohyrdodynamic Effect When ...

The exact middle of the bore of the magnet is termed: - Answer Isocenter Without proper safety limits on the MR system exposure to the time-varying magnetic fields created by the rapid switching of the gradient could create a potential environment for: - Answer Including electrical current in the patient's tissues Faraday's Law deals with induction of a current by a magnet. true or false? - Answer true The orientation of the main magnetic field of a low field permanent magnet is verti...

For a given number of poles, which of the following determines the speed of an AC motor? Frequency The terminals of a motor can be identified using a battery and a(n) _____. voltmeter The stationary magnet of a DC motor is represented by the ______. field poles Any exposed live parts must be guarded if they are operating at ______. 50V or more between terminals The synchronous speed at which a four-pole, 60Hz induction motor operates is _____. 1,800rpm In ...

1. Slew rate: Speed at which gradient coil turns on and off 2. Time-varying Gradient: Induced current in a patient 3. Magnetic Flux Lines: Travel from North to South pole 4. permanent magnet: Can not be turned off Very inexpensive; extremely heavy Approximately 0.4T Vertical vector 5. Resistive magnet: Can be turned on and off Costly due to cooling Approximately 0.6T Vertical or horizontal vector 6. Superconductive magnet: Approximately 10T Low electricity; reasonable cost 7. Active sh...

ETA Exam 50 Questions with Verified Answers Electrostatic Discharge - CORRECT ANSWER What does the acronym ESD stand for? 100mA, 200mA - CORRECT ANSWER Current amounts between __ and __ can be lethal. Shock - CORRECT ANSWER What is the number one concern in regards to electrical safety? Protons, neutrons, electrons - CORRECT ANSWER Bohr's Atomic Model consists of what three components? Shells - CORRECT ANSWER Electrons are arranged in __ around the nucleus. Conductors, semi-co...

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 - Answer B. Single shot fast spin echo During acquisition, it is noticed that the T wave of the cardiac cycle is elevated. What is this artifact called? A. Magnetohydrodynamic Effect B. Excitation C. Teratogenesis D. Magnetophosphenes - Answer A. Magnetohyrdodynamic Effect When can heating occur in a wire? A. Only in...

Different tissues that have signals that appear similar on an MR image are described as: - Answer isointense In a large main magnetic field such as those employed in MRI, the motion of a hydrogen proton has been described as wobbling like a spinning top. this motion is called: - Answer precession magnetic resonance imaging is derived from the process known as: - Answer nuclear magnetic resonance Once the nmv has moved away from equilibrium, the following will occur - Answer the transver...

Unit 9 - Basic Electric Motors Advanced Quizes 2023/2024. What is magnetism - ANSWER the attraction of an object to iron torque is ...... - ANSWER strength that a motor produces while turning a magnetic field ....... - ANSWER area around an electric motor or wire where a magnetic force operates permanent magnet - ANSWER magnetized material that can hold its magnetic strength for a reasonable length of time how is an electromagnet produced - ANSWER produced through electricity - whe...

The resistance of a component at a given frequency - Answer What is impedance? Diode - Answer A two terminal device that conducts in only one direction. Printed Circuit Board - Answer Insulating board containing conductive tracks for circuit connections. Capacitor - Answer An electrical device used to store electrical charge. 1996 - Answer When did the ETA initiate renewal? False - Answer all ETA certifications require the passage of the associate CET exam? False - Answer to qu...

AST Practice 1-100 Questions and Answers 100% Pass What does the acronym ESD stand for? Electrostatic Discharge Current amount between ____ and _____ can be lethal. 100mA,200mA What is the number one concern in regards to electrical safety? Shock Bohr's Atomic Model consists of what three components? Protons, neutrons and electrons Electrons are arranged in _____ around a nucleus. Shells What are three types of materials used in electronics? Conductors, semi-conductors and insulators In t...