AMRIT practice 2 Questions with correct answers

Of the following enhancement agents which is still investigational Correct Answer - All MRI magnets that can range in weight from ,000lbs are: Correct Answer - Permanent Using a conventional spin-echo multi-slice pulse sequence, increasing the TE from 20 msec. to 40 msec will __ the number of slices allowed: Correct Answer - Reduce In the enviorment of an MR main magnetic field most implants that cause a deflection are considered safe for imaging: Correct Answer - False T1 is the characteristic time constant for __________ Correct Answer - 63% regrowth of longiudinal magnetization Coils that can, during the MRI process, act as a transmitter, receiver or both are: Correct Answer - Radio Frequency coils (transceivers) The MR signal is strongest when the precessing nuclei are: Correct Answer - In phase coherence Increasing which parameter is considered the "best" technique for improving image quality? Correct Answer - NEX When the net magnetixation in the XY plane has ceased to exist the condition of ____ has been reached. Correct Answer - Equilibrium