MR Brain Spectroscopy Manual Shim - Numaris X

MR Brain Spectroscopy Manual Shim – Numaris X Job Aid MR Spectroscopy Manual Shim – Numaris X Job Aid The shim quality is important for MR Spectroscopy examinations. The goal is to decrease the Full Width at Half Maximum (FWHM) and increase T2*. • If automatic adjustments produce a satisfactory FWHM as specified in the ranges listed below, no further interaction needed. • If the automatic adjustment is not satisfactory, then interactive shim can be used to improve examination results. MR Brain Spectroscopy – Ideal Shim (FWHM) values 1. SVS – FWHM Range a. 1.5T = <13 Hz b. 3T = <20 Hz 2. CSI – FWHM Range a. 1.5T = <20 Hz b. 3T = <25 Hz MR Brain Spectroscopy – Manual Adjustment 1. Register a Patient for a MR Brain Spectroscopy examination. a. Plan the measurement > Select GO 2. Review Confirm Frequency Adjustment Results a. FWHM Satisfactory (e.g., No Manual Adjustment required) i. Select Continue ii. Select GO – measurement runs b. FWHM too High i. Select Cancel Confirm Frequency Adjustment FWHM [Hz] 9.5 Mag 63,672,308 63,677,416 Coil Combined ADC - Frequency (sys) 63674867 [Hz] Frequency (temp) 63674867 [Hz] Apply 63,674,867 63,500,000 63,700,000 Continue Cancel Unrestricted | Published by Siemens Healthineers AG, 2024 SIEMENS Master Template Effective Date: 3/5/2020 | HOOD05162003074494 Job Aid Effective Date: 04/30/2024 | QR700007843 Healthineers 3. Open Spectroscopy Sequence (SVS/CSI) a. Select System > Adjustments > Manual Adjustments ¿ 8:07 min Auto @ 13.3x10.7x15.0 mm3 ? 1.25 Routine Contrast Resolution Geometry System Inline Sequence Coils Miscellaneous Adjustments Adjust Volume Tx/Rx Adjustment Strategy Standard Adjustment Tolerance Auto (Maxi ... BO Shim Brain Adjust with Body Coil Confirm Frequency Always Assume Silicone Adj. Water Suppr. CoilShim Off Manual Adjustments 4. Select Inter. Shim Tab – adjust FWHM by selecting individual gradients. a. Adjust FWHM for [A11/B11/A10 Gradients] only i. A11 (X Gradient) ii. B11 (Y Gradient) iii. A10 (Z Gradient) iv. Notes – Do not adjust any other gradients. • Perform adjustment one gradient at a time if needed to lower FWHM b. Select Measure – starts shim adjustment. i. Infinite measurement performed with the current set shim parameters. ii. Monitor results for FWHM and T2* • Aim for Lowest FWHM possible c. Select A11 (X Gradient) i. Click A11 “Up Arrow” 2 Clicks at a Time • Monitor FWHM and T2* – wait for changes to populate New FWHM ii. Shim Results Worsens • Select Load Best (e.g., uses best shim results of current measurement) • Click A11 “Down Arrow” 2 Clicks at a Time iii. Shim Results Improve • Continue to adjust 2 Clicks at a Time • Select Load Best (e.g., uses best shim results of current measurement) Unrestricted | Published by Siemens Healthineers AG, 2024 SIEMENS Master Template Effective Date: 3/5/2020 | HOOD05162003074494 Job Aid Effective Date: 04/30/2024 | QR700007843 Healthineers Page 2 of 6 d. FWHM and T2* Still Unsatisfactory after A11 Adjustment i. Repeat Steps above for [B11 (Y Gradient) & A10 (Z Gradient)] e. Satisfied with Shim Results – Lowest Value (FWHM) Reached i. Select Stop – satisfied with FWHM and T2* Results ii. Select Load Best (e.g., uses best shim results of current measurement) iii. Select Apply – shim results are applied to Spectroscopy measurement Manual Adjustments X Frequency NO Amplitude [V] Int |P T2" [ms] FWHM [Hz] Tendency Transmitter 450.0 13,312 30.7 O 3D Shim 450.0 13,030 31.3 Inter. Shim 450.0 12,179 31.6 450.0 12,596 30.4 + 0 Water Supp- 450.0 13,428 30.6 O Show 0 450.0 12,279 22 30.1 oil Combined ADC Uncomb. On Amplitude [V] Max] 565 Receiver Gain High Measure t [ms] Physio Triggering Off Stop mag Max 0 Min 512 Increment Temporary System A00 [Hz] 63674910 A11 [HT/m] 73.74 Apply B11 [HT/m] -1033.83 A10 [UT/m] -774.20 Max] 12,679 FWHM [Hz] 30.6 A20 [HT/m2] Load Tune-Up A21 [HT/m2] mag f [Hz] B21 [UT/m2] Load System 63,674.410 63,675,408 A22 [uT/m3] Load Best B22 [uT/m3] Global Reset Best Reset Unrestricted | Published by Siemens Healthineers AG, 2024 Master SIEMENS Template Effective Date: 3/5/2020 | HOOD05162003074494 Job Aid Effective Date: 04/30/2024 | QR700007843 Healthineers Page 3 of 6 5. Select Frequency Tab a. Click GO – Frequency Adjustment Runs i. Click GO Again until Delta Column Shows 0 (+/- 2) b. Select Apply i. Select Close – manual adjustments are completed Manual Adjustments Frequency No Amplitude[V] Frequency old[Hz] Delta Frequency new[Hz] FWHM[Hz] Converged Transmitter 0 500.0 63,674.910 12 63.674,922 25.2 3D Shim 500.0 63,674,922 63.674,921 26.9 Inter. Shim 500.0 63.674,921 63,674,922 26.7 Water Supp. Show Coil Combined ADC - Frequency (sys) 63674922 Frequency (temp) 63674922 Apply Amplitude [V] 500.0 Go Sequence Resolution STEAM 10 Hz Abort Receiver Gain High Physio Triggering Off Save Uncombined On mag |Max| 182,825 FWHM [Hz] 26.7 63,672,362 63,677,470 Reset Unrestricted | Published by Siemens Healthineers AG, 2024 Master SIEMENS Template Effective Date: 3/5/2020 | HOOD05162003074494 Job Aid Effective Date: 04/30/2024 | QR700007843 Healthineers Page 4 of 6 6. Select GO > Confirm Frequency Adjustment window opens. a. Hint: Confirm FWHM is satisfactory in the Ranges listed above b. Select Continue – Spectroscopy measurement runs Confirm Frequency Adjustment ? X System frequency manipulation might result in a slice shift in the following measurement (slices might not be measured at the intended position). Max| 182,825 FWHM [HZ] 26.7 Mag f [Hz] 63,672,362 63,677.470 Coil Combined ADC Frequency (sys) 63674922 [Hz] Frequency (temp) 63674922 + [Hz] Apply Continue Cancel Unrestricted | Published by Siemens Healthineers AG, 2024 Master SIEMENS Template Effective Date: 3/5/2020 | HOOD05162003074494 Job Aid Effective Date: 04/30/2024 | QR700007843 Healthineers Page 5 of 6 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'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. 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. Copyright © Siemens Healthineers AG 2024 Siemens Healthineers Headquarters Local Contact Information Legal Manufacturer Siemens Healthineers AG Siemens Medical Solutions USA, Inc. Imaging & Therapy Systems Siemensstraße 3 40 Liberty Blvd. Magnetic Resonance 91301 Forcheim, Germany Malvern, PA 19355-9998 USA Henkestr. 127 Phone: +49 9191 18-0 Telephone: +1-888-826-9702 DE-91052 Erlangen siemens-healthineers.com Customer Care Telephone: Germany +1-800-888-7436 Telephone: +49 9191 18-0 Unrestricted | Published by Siemens Healthineers AG, 2024 Master SIEMENS Template Effective Date: 3/5/2020 | HOOD05162003074494 Job Aid Effective Date: 04/30/2024 | QR700007843 Healthineers Page 6 of 6