2017 Imaging for Physicists Coursebook

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Fast (Turbo) Spin Echo
• Multiple SEs but individually phase encoded
• Scan time reduced by ETL (‘Turbo factor’)
• Effective TE
• Image quality trade-off
If ETL or ESP too large blurring
• Characteristic bright fat
J-coupling breakdown caused by use of echo trains
Scan time = (TR  NAV  NPE)/ETL
Aka:
FSE
TSE
RARE