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MRI IN PRACTICE CHAPTER 8: ARTIFACTS EXAM 2025 QUESTIONS AND ANSWERS phase mismapping - ....ANSWER ...-produces replications of moving anatomy across the image in the phase encoding axis another name for phase mismapping - ....ANSWER ...-ghosting phase mismapping usually occurs from anatomy that moves periodically throughout the scan, such as - ....ANSWER ...-anterior abdominal wall during respiration, pulsation of vessels and CSF, swallowing, and eye movement when is phase mismapping less obvious - ....ANSWER ...-less obvious with distance from the source of motion the physical separation of each ghost depends on - ....ANSWER ...-scan time parameters such as TR, NSA, and phase matrix. and the period of motion why is phase mismapping produced by anatomy moving along the phase encoding gradient during the pulse sequence? - ....ANSWER ...-unlike the frequency and slice select gradients that are applied at the same amplitude every TR, the phase encoding gradient is applied at a different amplitude. As anatomy moves during the ...©️ 2025, ALL RIGHTS RESERVED 1