ARMRIT-Practice test (part 2 Mri Clinical applications) questions and answers

ARMRIT-Practice test (part 2 Mri Clinical applications) questions and answers Tissues that have low (short) relaxation times have: - Ans ️️ -High (long) relaxation rates Spatial resolution is an image quality factor determined by ________ and ________. - Ans ️️ - Slice thickness and pixel size Inversion time, In an inversion recovery pulse sequence, is the time interval between the: - Ans ️️ -180 and 90 degree pulses A complicated equation for predicting the MR signal intensity from a tissue subject to a spin- echo sequence is the: - Ans ️️ -Bloch Equation In a gradient echo pulse sequence, which flip angle will produce a T2 weighted gradient echo image? - Ans ️️ ->20-<45 degrees The best technique for improving image quality is to increase: - Ans ️️ -NEX For the following spin-echo protocol: FOV 320/ TR:500/ TE:25/ Slice Thick:5mm/ Slice Gap:1 mm/ slice #9/ NEX:4/ matrix:192, increasing FOV, TE and slice interval will: - Ans ️️ -Not affect scan time In a horizontal field magnet, what is the primary Gs for a Sagittal slice? - Ans ️️ -Gx What pulse imaging technique is employed in all implementations of MRA? - Ans ️️ -Gradient Echo Who described the mathematical method for converting a time-varying signal into its frequency components, which are used to obtain positional information from the MR signal? - Ans ️️ - Jean-Baptiste - Joseph Fourier For the following spin-echo protocol: FOV 320/ TR:500/ TE:25/ Slice Thick:5mm/ Slice Gap:1 mm/ slice #9/ NEX:4/ matrix:192, increasing the FOV will: - Ans ️️ -Increase SN