MRI Scanner Components

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What is the function of the superconducting magnet in an MRI scanner?

Generates radiofrequency pulses

Generates a strong and uniform magnetic field crucial for the MRI process (correct)

Produces signals detected during imaging

Creates varying magnetic field gradients

Which component of the MRI scanner is responsible for creating varying magnetic field gradients across spatial directions?

Gradient coils (correct)

Superconducting magnet

Radiofrequency (RF) coils

Patient table

What is the main function of the RF coils in an MRI scanner?

Produce signals detected during imaging

Transmit radiofrequency pulses into the body (correct)

Generate a strong and uniform magnetic field crucial for the MRI process

Fine-tune and optimize the homogeneity of the magnetic field

Which component of the MRI scanner is responsible for correcting distortions in the magnetic field for improved image quality?

Shimming coils Signup and view all the answers

What is the function of the patient table in an MRI scanner?

Allows the patient to lie on a movable table, adjustable for different positions Signup and view all the answers

What is the purpose of RF shielding in an MRI room?

Prevent external interference and ensure the stability of the magnetic field Signup and view all the answers

Which component of the MRI scanner provides the electrical currents necessary to drive gradient coils, producing magnetic field gradients for spatial encoding?

Gradient amplifiers Signup and view all the answers

What is the role of gradient amplifiers in an MRI scanner?

Provide electrical currents necessary to drive gradient coils Signup and view all the answers

What is the main function of the control console in magnetic resonance imaging?

Acquiring and reconstructing imaging data Signup and view all the answers

What are the safety considerations in magnetic resonance imaging related to metallic implants?

Metal implants can cause localized tissue heating and nerve stimulation Signup and view all the answers

Why is it important to avoid bringing items susceptible to magnetic fields into the MRI suite?

To prevent injury or damage caused by the magnetic field Signup and view all the answers

What is a significant concern for some patients undergoing MRI?

Claustrophobia Signup and view all the answers

What benefits can be gained by combining MRI with PET?

Better tissue contrast than CT and simultaneous imaging Signup and view all the answers

What challenges are associated with colocating MRI with PET tomographs?

Disruption of the magnetic field pulse and interference with imaging data acquisition Signup and view all the answers

What is a potential effect of the magnetic field and RF pulse in MRI?

Localized tissue heating and nerve stimulation Signup and view all the answers

What does the display and image reconstruction system do in MRI?

Displays reconstructed images on monitors for analysis by healthcare professionals Signup and view all the answers

What causes noise in MRI?

Rapidly changing currents in the gradient coils Signup and view all the answers

MRI Scanner Components

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