Fast DIXON

Fast DIXON Job Aid Fast Dixon (TSE DIXON) Fast DIXON is used to reduce acquisition time and thereby reduce motion artifacts e.g. for Breast examinations. This dual-echo DIXON technique acquires in-phase and opposed-phase echoes consecutively within one echo train. This implies that the acquisition time is reduced whilst maintaining other imaging parameters. This sequence diagram depicts a Single Echo Train for a Fast DIXON sequence with a Turbo Factor of 3. Ech : Echo opp RF/ADC Exc. Refoc. Readout .......... gradient Atopp-in DIXON and Fast DIXON: Contrast > Common Parameter Card The parameters for DIXON have been moved to a separate window and are now located on the Contrast > Common Parameter Card. Clicking the button to the right of the Dixon checkbox (1) launches a window with access to the additional selections detailed below. The following selections are additional: • Original Echoes: Turns on or off in-phase and opposed phase images • Water: Turns on or off Dixon images reconstructed with water signal only • Fat: Turns on or off Dixon images reconstructed with fat signal only 5 sec 4 Auto @ None @4.7x4.7x5.0 mm3 + 1.00 Routine Contrast Resolution Geometry System Physio Inline Sequence Common Dynamic 550.0 ms Fat-Water Contrast Fast Dixon 30,00 m Fat Saturation Strong Dixon Original Echoes In Phase Opposed Phase Close Published by Siemens Healthcare GmbH © Siemens Healthcare GmbH, 2020 SIEMENS Master Template Effective Date: 05 MAR 2020 | HOOD05162003074494 Job Aid Effective Date: 10 SEP 2020 | HOOD05162003091643 Healthineers Job Aid | Fast DIXON Effective Date: 10 SEP 2020 | HOOD05162003091643 Fast T2 TSE, Dixon is a dual echo Dixon technique that enables consecutive acquisitions of in and opposed phase echoes in one echo train with a reduction in measurement time and motion sensitivity. This can be activated through the Fat-Water Contrast. @ 5 sec Auto @ None @ 4.7x4.7x5.0 mm2 1.00 Routine Contrast Resolution Geometry System Physio Inline Sequence Common Dynamic TR 550,0 ¢ ms Fat-Water Contrast Fast Dixon 30,00 ms Fat Saturation Strong Dixon ? x Original Echoes Water Fat In Phase Opposed Phase Close Fast DIXON for 3T Systems Fast DIXON as implemented on 3T Systems has the ability to select Asymmetric echo acquisition to enable larger matrix sizes or smaller field of views. Asymmetric echo is located on the Sequence > Part 1 Parameter Card. When Asymmetric Echo is activated on 3T systems, it increases the distance between the inphase and opposed phase echoes. SIEMENS >> pelvis female >> library >> T2 >> t2_tse_dixon_tra ? > General @ 3:00 min ¡ Auto @ 2 @ 0.9x0.9x6.0 mm3 1.00 Protocol Parameters Routine Contrast Resolution Geometry System Physio Inline Sequence Voice Commands Part 1 Part 2 Assistant Execution Image Management Sequence Name tse Bandwidth 1015 Hz/Px Auto Load Echo Spacing 10.06 ¢ m Copy References Asymmetric Echo Strong RF Pulse Type Normal Define Turbo Factor Turbo Factor 23 Gradient Mode Performance Echo Trains per Slice Flow Compensation None OK Cancel Published by Siemens Healthcare GmbH © Siemens Healthcare GmbH, 2020 SIEMENS Master Template Effective Date: 05 MAR 2020 | HOOD05162003074494 Job Aid Effective Date: 10 SEP 2020 | HOOD05162003091643 Healthineers Page 2 of 3 Job Aid | Fast DIXON Effective Date: 10 SEP 2020 | HOOD05162003091643 Please note that the learning material is for training purposes only! For the proper use of the software or hardware, please always use the Operator Manual or Instructions for Use (hereinafter co llectively ‘Operator Manual’) issued by Siemens Healthineers. This material is to be used as training material only and shall by no means substitute the Operator Manual. Any material used in this training will not be updated on a regular basis and does not necessarily reflect the latest version of the software and hardware available at the time of the training. The Operator's Manual shall be used as your main reference, in particular for relevant safety information like warnings and cautions. Note: Some functions shown in this material are optional and might not be part of your system. Certain products, product related claims or functionalities (hereinafter collectively ‘Functionality’) may not (yet) be commercially available in your country. 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Copyright © Siemens Healthcare GmbH 2020 Siemens Healthineers Headquarters Siemens Healthcare GmbH Henkestr. 127 91052 Erlangen, Germany Phone: +49 9131 84-0 siemens-healthineers.com Published by Siemens Healthcare GmbH © Siemens Healthcare GmbH, 2020 SIEMENS Master Template Effective Date: 05 MAR 2020 | HOOD05162003074494 Job Aid Effective Date: 10 SEP 2020 | HOOD05162003091643 Healthineers Page 3 of 3