Siemens Healthineers Academy

BLADE Diffusion - USA

This pdf introduces you to the BLADE Diffusion technique. It is a member of the BLADE family based on the Turbo Gradient Spin Echo (TGSE) sequence.

SIEMENS Healthineers BLADE Diffusion Job Aid Template Effective Date: 10 Aug 2021| HILS 2223 Effective Date 09 Aug, 2022| HOOD05162003294634 Unrestricted © Siemens Healthineers, 2022 BLADE Diffusion SIEMENS Healthineers Table of Contents Overview 3 BLADE - Diffusion Activation 4 Available Siemens Protocols 5 blade_b0_1000_tra_160_p2_4mm 03:50 SMS and TSE 6 Application Strategy 7 blade_b0_1000_tra_160_p2s2_4mm 03:12 Comparison Vida XQ: brain 9 Tips & Tricks 10 blade_b0_1000_cor_192_p2_3mm 05:27 2 Effective Date: 09 Aug, 2022| HOOD05162003294634 Unrestricted © Siemens Healthineers, 2022 BLADE Diffusion SIEMENS Healthineers Overview BLADE Diffusion is a member of the BLADE family based on SIEMENS >> head >> library >> diffusion >> blade diff tra 160_p2s2 4mm ? General @ 3:12 min Auto @ 1.4x1.4x4.0 mm3 1.00 the Turbo Gradient Spin Echo (TGSE) sequence. Protocol Parameters Routine Contrast Resolution Geometry System Physio Diff Inline Sequence Voice Commands Execution Diffusion Mode 4-Scan Trace Diff. Weighted Images Image Management Diff. Directions Trace Weighted Images By adding the BLADE Diffusion license, BLADE leverages the Auto Load Diffusion Scheme Monopolar Copy References Tensor advantage of the TGSE sequence design. TGSE readout can Diff. Weightings 2 + FA Maps b-value Averages ADC Maps be used to accelerate data sampling and reduce SAR within o 1000 + Exponential ADC Maps the diffusion mode. b-value >= 0 + s/mm2 ADC Noise Threshold 40 + Diffusion weighting allows EPI factors > 1 so that a BLADE- Invert Gray Scale Calculated b-value based non-EPI diffusion sequence becomes available. By performing diffusion imaging with a non-EPI sequence, geometric distortions can be eliminated in areas with large susceptibility changes such as the sinuses and the inner auditory canal. 3 Effective Date: 09 Aug, 2022| HOOD05162003294634 Unrestricted © Siemens Healthineers, 2022 BLADE Diffusion SIEMENS Healthineers Activation You can activate the BLADE diffusion mode under the Diff parameter card by selecting the required mode in the Diffusion Mode dropdown list. Ö 3 sec 1 Auto @ 2 Note: @ 1.6x1.6x5.0 mm3 Routine Contrast Resolution Geometry System Physio Diff Normally 1 average is used for low b value; Diffusion Mode 3D Diagonal Diff. Weighted Images V 1 or 2 can be used for high b-value. Diff. Directions Trace Weighted Images Routine Contrast Resolution Geometry Diffusion Mode 3D Diagonal Diff. Directions Diffusion Scheme Monopolar Diff. Weightings 1 b-value Averages 1 Use BLADE coverage to compensate SNR. 4 Effective Date: 09 Aug, 2022| HOOD05162003294634 Unrestricted © Siemens Healthineers, 2022 BLADE Diffusion SIEMENS Healthineers Available Siemens Protocols The protocols for BLADE Diffusion are located Under BLADE Diffusion you can find the following protocols: under myExam Cockpit > Siemens > head > library 1 Whole brain coverage, e.g., as alternative for ep2d_diff. > diffusion. 2 Whole brain coverage and SMS. Local Database 3 Covering IAC for Cholesteatoma imaging. SIEMENS USER >> head >> library >> diffusion [] head Brain Assist BLADE - Diffusion_ clinical libraries advanced applications libraries E PD+12 blade_diff_tra_160_p2_4mm 03:50 GOBrain E 3D 1 library E diffusion blade_diff_tra_160_p2s2_4mm 03:12 2 E localizer El perfusion E T1 E BOLD blade_diff_cor_192_p2_3mm 05:27 3 E T2 E PD+12 HASTE - Diffusion 3 3D E diffusion t2_haste_diff_cor_p2 04:28 E perfusion EBOLD 5 Effective Date: 09 Aug, 2022| HOOD05162003294634 Unrestricted © Siemens Healthineers, 2022 BLADE Diffusion SIEMENS Healthineers SMS and TSE SMS (Simultaneous Multi Slice)and TSE Routine Contrast Resolution Geometry System Physio Diff Inline Sequence (Turbo Spin Echo) reference scan are Common Acceleration Filter supported by the BLADE_Diff sequence. Acceleration mode SMS Under Resolution > Acceleration select the required acceleration mode in the Reference Scans TSE/Sep ... Acceleration Mode dropdown list. Acceleration Factor PE 2 + Reference Lines PE 64 = SMS Factor 2 + Ramp Sampling Y By adapting the Acceleration Factor PE (Phase Encoding) you can reduce FOV Shift Factor measurement time. 6 Effective Date: 09 Aug, 2022| HOOD05162003294634 Unrestricted © Siemens Healthineers, 2022 BLADE Diffusion SIEMENS Healthineers Application Strategy a) How to increase image quality Adjust the Echo Planar Imaging (EPI) factor Adjust the echo time (TE) factor • Large EPI factor: SAR↓; TA ↓; artifact, signal void Short TE: SNR ↑; Sharpness ↓ centric reordering will • where B0 inhomogeneity is severe ↑ be used • Normally 3 ~ 5 is used Long TE: SNR ↓; Sharpness ↑linear reordering will • 4:47 min Auto2 2 @ 1.6x1.6x5.0 mm3 ֏ 0.48 be used Routine Contrast Resolution Geometry System Physio Diff Inline Sequence Part 1 Assistant 4:47 min Auto 02 @ 1.6x1.6x5.0 mm3 + 0.48 Part2 Sequence Name tgBAE3 Bandwidth 840 + Hz/PX Routine Contrast Resolution Geometry System Physio Diff Inline Sequence Echo Spacing 7.42 ms Slice Group FoV Read 300 + mm Slices 13 + FoV Phase 100.0 ¢ % Slice Thickness 5.0¢ mm RF Pulse Type Fast Distance Factor 50 % TR 4000.0 ms Turbo Factor 11 + Position Isocenter TE 52.00 - ms Gradient Mode Fast Orientation Transversal Averages Reordering Centric EPI Factor 3 7 Effective Date: 09 Aug, 2022| HOOD05162003294634 Unrestricted © Siemens Healthineers, 2022 BLADE Diffusion SIEMENS Healthineers Application Strategy b) How to reduce scan time SIEMENS > head >> library >> diffusion >> blade_diff_tra_160_p2s2_4mm ? X General 3:12 min Auto Q 4 @ 1.4x1.4x4.0 mm3 1.00 Protocol Parameters Routine Contrast Resolution Geometry System Physio Diff Inline Sequence Voice Commands Activate Fast BLADE Execution Part 1 Part 2 Assistant Image Management • HASTE RF pulses will be used in the data Introduction v Auto Load acquisition, as fast_tse Copy References • Recommend to be switched on, seem to be able to gain some SNR ↓ • By activating Fast BLADE you can achieve shorter Acoustic noise reduction Off echo spacing Hyperecho Fast BLADE Motion Correction Off OK Cancel 8 Effective Date: 09 Aug, 2022| HOOD05162003294634 Unrestricted © Siemens Healthineers, 2022 BLADE Diffusion SIEMENS Healthineers Comparison Vida XQ: Brain a) With BLADE Diffusion the distortion Resolve, Matrix 160, HN20 Blade, Matrix 160, HN20 Blade, Matrix 192, Head32 b) artifacts are reduced. 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Weighted Images for short TE. Diff. Directions Trace Weighted Images 5 Diffusion Scheme Monopolar Tensor Diff. Weightings 2 FA Maps b-value Averages ADC Maps Diffusion scheme O 1000 = Exponential ADC Maps 5 Monopolar is recommended, for short TE. Invert Gray Scale Calculated b-value 11 Effective Date: 09 Aug, 2022| HOOD05162003294634 Unrestricted © Siemens Healthineers, 2022 BLADE Diffusion SIEMENS Healthineers Tips & Tricks 4:47 min Auto 2 @ 1.6x1.6x5.0 mm3 0.48 6 TR- repetition time Routine Contrast Resolution Geometry System Physio Diff Inline Sequence 4000 ~ 5000 is recommended. Slice Group FoV Read 300 + mm Slices 13 + FoV Phase 100.0 % 6 Slice Thickness 5.0 - mm Distance Factor 50 + % TR 4000.0 - ms Position Isocenter TE 52.00 - ms Orientation Transversal Averages ... 7 Phase Encoding Dir. A>> P Concatenations Phase Oversampling 100.0 ¢ % AutoAlign ... 7 Phase oversampling Coil Elements SP5 100% is recommended for coronal imaging to mitigate the TR 170.0 4000.0 20000.0 ms folding artifact. 2200.0 12 Effective Date: 09 Aug, 2022| HOOD05162003294634 Unrestricted © Siemens Healthineers, 2022 BLADE Diffusion SIEMENS Healthineers Tips & Tricks ¿ 4:47 min Auto2 2 @ 1.6x1.6x5.0 mm3 0.48 Routine Contrast Resolution Geometry System Physio Diff Inline Sequence Common Acceleration Filte 8 Acceleration factor Acceleration mode GRAPPA Deep Resolve Off p2 or p3 is recommended. 8 Reference Scans |TSE/Sep ... Acceleration Factor PE Reference Lines PE 32 + 9 Ramp Sampling 9 Ramp sampling Will be automatically switched on when EPI factor > 1. 13 Effective Date: 09 Aug, 2022| HOOD05162003294634 Unrestricted © Siemens Healthineers, 2022 SIEMENS Healthineers 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 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. 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 Healthcare GmbH 2022 Siemens Healthineers Headquarters Siemens Healthcare GmbH Henkestr. 127 91052 Erlangen, Germany Telephone: +49 9131 84-0 siemens-healthineers.com Effective Date: 09 Aug, 2022| HOOD05162003294634 Unrestricted © Siemens Healthineers, 2022

  • blade
  • diffusion
  • diff
  • SMS
  • TSE
  • TGSE
  • BLADE
  • Turbo
  • Gradient
  • Spin
  • Echo