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bSSFP artifacts at rectum

prostate interface

The image cannot be displayed. Your computermay not have enoughmemory to open the image, or the imagemay have been corrupted. Restart your computer, and then open the file again. If the red x still appears, youmay have to delete the image and then insert it again.

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bSSFP artifact

• Balanced Steady State Free Precession

also known as:

– bTFE, bFFE (Philips)

– trueFISP (Siemens)

– FIESTA (GE)

• Steady state depends on T

1

and T

2

• Spins from many excitations create a steady

state of precessing spins

• B0 distortions (susceptibility) result in spins

that are off-resonance and don’t see the RF

pulses. Thus they don’t produce a signal