Cover Imaging for Physicists

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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
If ETL or ESP too large blurring
FSE-XL
•Characteristic bright fat
J-coupling breakdown caused by echo train
DIET remedies this to give spin-echo contrast
Scan time = (TR× NAV × NPE)/ETL
FSE
TSE
RARE