2017_Imaging for Physicits_Florence

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Fast Spin Echo (Turbo Spin Echo)
• Multiple SEs but individually phase encoded
• Scan time reduced by ETL (‘Turbo factor’)
• Effective TE
• Image quality trade-off:
Blurring with excessive ETL & ESP
Characteristic bright fat
Scan time = (TR× NAV × NPE)/ETL
FSE
TSE
RARE