ARMRIT-Practice Test (Part 2: Mri Clinical Applications) with Complete Solutions!

Spatial resolution is an image quality factor determined by ________ and ________. - ANSWER-Slice thickness and pixel size Inversion time, In an inversion recovery pulse sequence, is the time interval between the: - ANSWER-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: - ANSWER-Bloch Equation In a gradient echo pulse sequence, which flip angle will produce a T2 weighted gradient echo image? - ANSWER->20-<45 degrees The best technique for improving image quality is to increase: - ANSWER-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: - ANSWER-Not affect scan time In a horizontal field magnet, what is the primary Gs for a Sagittal slice? - ANSWER-Gx What pulse imaging technique is employed in all implementations of MRA? - ANSWER-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? - ANSWER-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: - ANSWER-Increase SNR Which parameter in a pulse sequence helps to prevent "cross Talk" between two adjacent images? - ANSWER-Slice Interval