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B0 mapping
• Air/tissue interfaces problematic
• Dynamic & HO shimming
• May be measured/corrected:
• Image at two different TEs
• Reconstruct phase difference
• Bhagwandien measured -5 to
+6ppm i.e. nearly twice WFS
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.
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.
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.
Maximum 34 Hz (0.3 ppm)
Maximum
203 Hz (1.6
ppm @ 3T)
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.
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 appars, yumay have to delete the image nd then insrt it again.
Magnitude
Difference
Phase (TE1) Phase (TE2)