Advanced - Day 2

A decrease in SNR but no loss in resolution occurs with

• Phase Resolution < 100%

• Asymmetric Echo

• Increasing FOV

• iPAT

When the SAR limits exceeded dialog box appears during a T1 sequence, you could

• Increase the flip angle

• Reduce the TR

• Decrease the flip angle

• Increase the number of slices

When the SAR limits exceeded dialog box appears during a T1 sequence, you should NOT

• Use a lower RF pulse type

• Reduce the flip angle

• Use hyperecho

• Reduce the number of slices

The TE in a BLADE can be affected by:

• Saturation Bands

• RF pulse type, Bandwidth

• Phase oversampling

• TR,

  Bandwidth

Which one of the following techniques increases SAR?

• HASTE

• iPAT

• SPACE

• Hyperecho

The room temperature must be below ________ or no imaging is possible:

• 19⁰

• 25⁰

• 30⁰

• 32⁰

__________ is defined as the RF power absorbed per unit of mass of an object when exposed to a radio frequency electromagnetic field:

• Heating

• GSWD

• SAR

• IEC

Compressed sensing GRASP VIBE does NOT use….

• A Golden Angle Radial acquisition

• Auto breath holds

• A Golden angle of 111.25 degrees

• A “stack of stars” acquisition

When running an SMS sequence, it is recommended to:

• Use one concat

• Use fewer slices

• Use Fast RF pulse

• Use a high channel coil

When implementing parallel imaging, which of the following is INCORRECT?

• Coils should be aligned in the phase encoding direction

• Number of coil elements must be equal to or greater than the PAT factor

• Number of coil elements must be equal to or less than the PAT factor

• Coils should be aligned in the slice encoding direction