MRI ARRT Mock Registry exam with 100% correct answers

When imaging a geriatric patient, while performing a PCA MRA sequence, what imaging parameter might the operator adjust? A. Field of view B. Presaturation band location C. Slice thickness D. VENC E. Contrast injection rate - correct answer VENC As the number of phase encodings is increased from 256 to 512, SNR (signal to noise ratio): A. Increases B. Decreases C. Doubles D. Does not change E. Quadruples - correct answer Decreases A magnetic vector possesses attributes of both __________ and _____________. A. Strength; magnitude B. Direction; purpose C. Strength; flow D. Magnitude; direction - correct answer Magnitude; direction What element in the body is the principal nucleus utilized in clinical MR imaging? A. Helium B. Hydrogen C. Oxygen