18 Questions
What is the main purpose of data acquisition in MRI?
To generate the spatial encoding
Which of the following effects can excessive use of gradients during MRI scanning lead to?
Involuntary muscle contractions
What determines the slice thickness in MRI imaging?
Slope of the slice selection gradient
What is the primary downside of sequential data acquisition in MRI?
Extended scan times
Which factor affects achieving thicker slices in MRI imaging?
Wider Transmit Bandwidth
In MRI, what does double angulation refer to?
Slice selection method
How does two-dimensional (2D) data acquisition differ from sequential acquisition in MRI?
It acquires all data from each slice simultaneously
What is the purpose of the RF Transmit Bandwidth in MRI?
To set the RF pulse frequency range
How does a narrower Transmit Bandwidth affect slice thickness in MRI imaging?
Thinner slices are achieved
What effect can be caused by excessive use of gradients during MRI scanning?
Cardiac arrhythmias
What plays a significant role in spatially encoding slices in MRI imaging?
Gradient Activation
In MRI, what role does the slope of the slice selection gradient play?
Determines slice thickness
What is the purpose of the gradient used for slice selection in MRI imaging?
To select the slice orientation
During MRI imaging, when is the slice selection gradient activated?
After the application of RF exaltation pulses
How does a shallow slice select gradient affect the thickness of the slices in MRI imaging?
Thicker slices are achieved
In MRI imaging, what is the role of the transmit RF pulse?
To excite the protons
Which gradient function in MRI imaging is responsible for selecting the plane that will be imaged?
Slice selection gradient
What happens to protons after the slice has been selected in MRI imaging?
They are all in a longitudinal plane
Test your knowledge on MRI frequency and slice select gradient parameters. Questions cover topics such as Bo values, RF frequencies, and how gradient slopes impact slice thickness in MRI imaging.
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