Passive and active shielding are performed during the installation of an MRI scanner.
The primary function of the shim coils is to allow spatial e…
The primary function of the shim coils is to allow spatial encoding of the MR signal.
The polarity of a gradient is determined by the direction of…
The polarity of a gradient is determined by the direction of the current flowing through the coil.
Surface coils provide higher SNR than volume coils.
Surface coils provide higher SNR than volume coils.
How does increasing magnetic field strength affect image qua…
How does increasing magnetic field strength affect image quality in MRI?
Match the pairs:
Match the pairs:
The MRI equipment room must remain cold with low humidity to…
The MRI equipment room must remain cold with low humidity to ensure that the equipment functions properly.
The FDA allowances for SAR are 4 W/kg for the whole body and…
The FDA allowances for SAR are 4 W/kg for the whole body and 3.2 W/kg for the head.
Liquid helium is kept at a temperature of 4 kelvin (K), whic…
Liquid helium is kept at a temperature of 4 kelvin (K), which is equal to:
Going from a linear to a quadrature coil will increase the S…
Going from a linear to a quadrature coil will increase the SNR by: