13 Questions
Which imaging artifact is also known as phase mismapping?
Ghosting artifact
What causes phase mismapping?
All of the above
Which remedy can help reduce phase mismapping artifacts?
All of the above
Which direction does phase mismapping occur in an image?
Posterior to anterior
What causes phase mismapping artifact?
All of the above
What can be done to reduce phase mismapping artifacts?
All of the above
Which imaging technique is prone to ghosting artifact from swallowing?
Cervical spine imaging
What is the effect of increasing the TR on phase mismapping artifacts?
Increases the separation between ghosts
How does swapping the phase and frequency encoding directions help with phase mismapping artifacts?
It shifts the artifact away from the area of interest
What can presaturation pulses do to phase mismapping artifacts?
Reduce or null the signal from the source of motion
Which type of motion can cause periodic perturbations of the collected data, leading to ghosting artifacts?
Eye movement
What is the cause of phase mismapping in an MRI scan?
Anatomy moving during the scan
What can be done to reduce phase mismapping caused by pulsatile flow?
Saturation pulses outside the FOV
Test your knowledge on phase mismapping and ghosting artifacts with this quiz! Learn about the causes of phase mismapping, remedies to reduce ghosting artifacts, and the role of parameters like TR, phase matrix, and NSA. Challenge yourself and improve your understanding of MRI image quality.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
