ARMRIT Practice Questions with 100% Correct Answers |VERIFIED|

ARMRIT Practice Questions with 100% Correct Answers |VERIFIED| The 2 types of enhancement media described by Lauffer, the mechanism of T1 agents is to decrease T1 relaxation time, thus emitting high signal An analogy for the decoding of the MR signal through Fourier Transform Basilar membrane processing sound Logically each line of phase encoding data is combined to allow the FT to determine the position along the y-axis. The number of phase encoding steps determines the number of pixels along the y-axis In a gradient echo pulse sequence, which flip angle will produce a T2 weighted gradient echo image. >20 - <45 degree flip angle In a horizontal magnet, what is the primary Gs (slice select gradient) for an axial slice Gz (axial slice) A linear relationship between frequency and position is superimposed on Bo by the Gp (phase encoding gradient). The Hydrogen protons relative precessional frequencies determine phase shifts Combining a metal ion with a ligand reduces their tendency to bind to proteins, enzymes, or membranes. The degree to which they dissociate is a measure of their toxicity In a phase sequence employing 2DFT, the time can be calculated using which formula TR x NEX x Matrix What pulse imaging technique is in all implementations of MRA gradient echo What year was the first MRI enhancement agent approved for clinical use 1988 Increasing NEX Increase SNR and Resolution Inversion time, in an IR pulse sequence, is the time interval between the 180 degree and 90 degree pulses Increasing the matrix increase resolution A pulse sequence that replaces the second RF pulse with a gradient magnetic field to rephase the transverse vector and produce and echo is called gradient echo Increase FOV, TE, Slice thickness does not affec