Armrit review test questions and answers

Armrit review test questions and answers The exact middle of the bore of the magnet is termed: - Ans ️️ -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: - Ans ️️ -Including electrical current in the patient's tissues Faraday's Law deals with induction of a current by a magnet. true or false? - Ans ️️ -true The orientation of the main magnetic field of a low field permanent magnet is vertical. True or false? - Ans ️️ -True ; permanent lowfield magnets utilize a magnetic field oriented vertically Superconductive magnets have high homogeneity compared to other magnets types. true or false? - Ans ️️ -true ; One advantage of a superconductive magnet is its excellent homogeneity The start up cost for a superconductive magnet is high. true or false? - Ans ️️ -true ; Initial cost may exceed two million dollars in addition to the expensive cyrogen up keep. A type of magnet that is generally used for a 1.0t or a 1.5t system is a: - Ans ️️ - Superconductive magnet The basic type of magnets used in MR are: - Ans ️️ -Permanent, resistive , superconductive A procedure called shimming: - Ans ️️ -Adjust the magnetic field to achieve the most homogenous field Superconductive magnets utilize two types of cyrogens. - Ans ️️ -Helium and nitrogen Types of transmit coils are: - Ans ️️ -a) Body, b) head, c) volume coils, d) all of the above. D all of the above Various types of receiver coils are: - Ans ️️ -a) solenoidal coil, b) volume,birdcage