2017 Imaging for Physicists Coursebook

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

Aka: FSE TSE RARE

Scan time = (TR  N AV

 N PE

)/ETL