
Dual Polarity GRAPPA and FLEET reference scan
The job aid provides an overview of Dual Polarity GRAPPA and the FLEET reference scan.
Target group: All users
Recommended to be viewed on the following devices: All (incl. tablet, smartphone)
SIEMENS Healthineers Dual Polarity GRAPPA and FLEET reference scan Template Effective Date: 10 Aug 2021 | HILS 2223 Effective Date: 09 Feb 2024 | QR700005237 Unrestricted I Published by Siemens Healthineers AG I © Siemens Healthineers, 2024 Dual Polarity GRAPPA and FLEET reference scan SIEMENS Healthineers Table of contents Dual Polarity GRAPPA (DPG) – how it works 3 Dual Polarity GRAPPA (DPG) – how to apply it 4 DPG and FLEET reference scan 5 Image examples 6 Saving the Results 15 PACS Ready Mode 16 How to ensure suitable performance 17 2 Effective Date: 09 Feb 2024 | QR700005237 Unrestricted I Published by Siemens Healthineers AG I © Siemens Healthineers, 2024 Dual Polarity GRAPPA (DPG) SIEMENS Healthineers How it works With DPG Without DPG • The reference data is measured twice – once with 2011-07 24-00 positive and once with negative readout polarity. 102. M. 30Y 7/24/2022 17/24/2022 2 14:21 AM 2.16:22AM • Two reference data sets are combined to create a ghost- b0 free reference image. TE A4 D TE 94 D GRAPPA kernels are trained separately for odd and even 801-37 • 2440 1.12 Zoons 1.12 measured lines by using a ghost-free reference. HE14 2021 01 26-8051 • The trained GRAPPA kernels are respectively applied to 7/24/2022 7/24/2027 the odd and even measured lines of the imaging data. This results in a ghost-free image. 246:38AM ADC Zicm 1is Diffusion EPI, PAT = 2 Reference: Hooge et al. (2016) Dual-Polarity GRAPPA for Simultaneous Reconstruction 3 and Ghost Correction of Echo Planar Imaging Data in Magnetic Resonance in Medicine Effective Date: 09 Feb 2024 | QR700005237 Effective Date: 09 Feb 2024 | QR700005237 76:32-44 Unrestricted I Published by Siemens Healthineers AG I © Siemens Healthineers, 2024 Dual Polarity GRAPPA (DPG) SIEMENS Healthineers How to apply it • Originally designed for Parallel Acquisition Ö 3 sec Auto @ None @ 3.9x3.9x5.0 mm3 ៛ 1.00 Technique (PAT). However, it works on non- Routine Contrast Resolution Geometry System Physio Diff Inline Sequence accelerated data as well and is referred to as Ghost Part 1 Part 2 Assistant Reduction in the User Interface. Introduction • Compatible with Deep Resolve. • You can select it in the Sequence card > Part 2. Phase Correction Internal Ghost Reduction Please note: It is not always enabled. Therefore, you may need to select it. This feature is not available in combination with ZOOMit. 4 Effective Date: 09 Feb 2024 | QR700005237 Unrestricted I Published by Siemens Healthineers AG I © Siemens Healthineers, 2024 DPG and FLEET reference scan SIEMENS Healthineers If you use DPG, additional reference scans are needed. 8 3 sec Auto @ 2 @ 3.9x3.9x5.0 mm3 ៛ 0.71 • As a result, there is increased sensitivity to motion. Routine Contrast Resolution Geometry System Physio Diff Inline Sequence Common Acceleration Filter Acceleration mode GRAPPA Deep Resolve Off • To deal with these issues use the FLEET reference scan. Phase Partial Fourier 6/8 • It is less sensitive to motion during the reference scan Reference Scans EPI/Sep ... It measures all data for one slice before moving to Acceleration Factor PE GRE/Separate • EPI/Separate the next. Reference Lines PE Fast GRE/Separate It is faster for PAT > 2 FLEET/Separate • Please note: Use only EPI or the FLEET reference scans with DPG. The FLEET reference scan is not compatible with SPAIR fat sat or ZOOMit. 5 Effective Date: 09 Feb 2024 | QR700005237 Unrestricted I Published by Siemens Healthineers AG I © Siemens Healthineers, 2024 Image Examples SIEMENS Healthineers Dual Polarity GRAPPA • Diffusion EPI, PAT = 2 With DPG Without DPG • b2000 AHL AHL • Deep Resolve Boost Siemens Heathineer's Siemens Heathineers • Deep Resolve Sharp Siemens_MAC Siemens_MAC "11/1/1978. F. 43Y *11/1/1978, F. 43Y 10/6/2022 HFS 10/6/2022 +LPH HFS ep2d_dtt_4scan-trace_p2_b2000_DRB_DRS_FLEET_TRACEW cp2d_diff_4scan-trace_p2_b2000_DRB_DRS_FLEET_RR_TRACEW +LPH Istest.B.Value_02 latest @-Value 02 40 [] 4D [] # XA61A XA61A STUDY D 27c87433-b0e2-45 STUDY D 27c87433-b0e2-40 4:59:04 PM 59:04 PM 27 IMA 2 FRM 6/28 29 MA 2 FRM 6/28 RAF RAF 1cm 1cm SL SPC 4.0 SL 52 F SPC 4.0 F R TR 3500 0 R TP O TR 3600.0 TP O TE 74.0 SPF59.1 TE 74.0 SP F59.1 TA 01:07 FoV 230-230 TA 59 FoV 230 230 BWV 1532.0 384p*3841 BW 1532.0 3840*384 1 p2 MAGNOIFF/TRACEW.NORMORS.DRB/DIS20 Tra>Con(-7)-Sag(1) p2 MAGNOFF/TRACEW.NORMORS.DRB.DIS20 Tra-Cor(-7).Sog(1) A3/PFPFS Zoom 1.42 A3.PFPIFS Zoom 1.42 HC1-7 W 189 64 HC1-7 189 ep_b20001190 ep_b20001 /90 64 GR off 6 Effective Date: 09 Feb 2024 | QR700005237 Effective Date: 09 Feb 2024 | QR700005237 Unrestricted I Published by Siemens Healthineers AG I © Siemens Healthineers, 2024 Image Examples SIEMENS Healthineers Dual Polarity GRAPPA With DPG Without DPG 10/6/2022 10/6/2022 • Diffusion EPI, PAT = 2 • B0 and ADC A RAGIA STUDYY IO • Deep Resolve Boost 29 MATARW 2209 b0 • Deep Resolve Sharp IF JE740 TE 74.0 SP H241 PASP Trae C 1921 1 42 AJFFFFS ne_80190 Blecere Hont veg Tevere Wic 10/6/2022 10/6/2022 CHAMA STUDY D 27037433-80-3 ADC RAS RAP IF F E740 Fev 200-220 Tax1 142 7 Effective Date: 09 Feb 2024 | QR700005237 Effective Date: 09 Feb 2024 | QR700005237 Unrestricted I Published by Siemens Healthineers AG I © Siemens Healthineers, 2024 SIEMENS Healthineers Please note this 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 collectively “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 Manual shall be used as your main reference, in particular for relevant safety information like warnings and cautions. Please 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. Due to regulatory requirements, the future availability of said Functionalities in any specific country is not guaranteed. Please contact your local Siemens Healthineers sales representative for the most current information. The reproduction, transmission or distribution of this training or its contents is not permitted without express written authority. Offenders will be liable for damages. All names and data of patients, parameters and configuration dependent designations are fictional and examples only. All rights, including rights created by patent grant or registration of a utility model or design, are reserved. © Siemens Healthineers AG 2024 Siemens Healthineers AG Siemensstr. 3 91301 Forchheim, Germany Telephone: +49 9191 18-0 siemens-healthineers.com 8 Effective Date: 09 Feb 2024 | QR700005237 Unrestricted I Published by Siemens Healthineers AG I © Siemens Healthineers, 2024
- dual polarity
- grappa
- dual polarity grappa
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- fleet reference scan
- ref scan