Arrt Mri Exam 2025 Questions And Aanswers

ARRT MRI EXAM, FINAL EXAM, PRACTICE EXAM AND STUDY GUIDE EXAM 2024-2025 600+ QUESTIONS And ANSWERS which type of MRI magnet requires cryogens to cool magnetic coils to 4 degrees Kelvin? - ANSWER--super conductive currently there is no evidence of threat to fetal development from MRI exposure - ANSWER--true the T2 process is also known as... - ANSWER--spin-lattice T2 is the measurement of time for the transverse component of the net magnetization vector to decrease what percentage of its maximum value after the application of a 90 degree radio frequency pulse - ANSWER--37% MRI systems require rooms that provide specific shielding requirements. these rooms are lined with what type of materials? - ANSWER--copper or galvanized steel the specification that is acceptable for field inhomogeneity of an MRI magnet for clinical scanning is... - ANSWER--B) 20-30ppm In a superconducting magnet the material employed is .....blank which becomes superconductive at 4 degrees Kelvin. - ANSWER--D) niobium- titanium the tissue characteristic that provide more tissue contrast & pathological information is... - ANSWER T2In 1990 Lauffer described two types of enhancement media, the mechanism of the T2 agent is to... - ANSWER--B)decrease T2 relaxation time, thus emitting low signal small magnetic fields that vary