Management of the table and coils

SIEMENS Healthineers Management of the table and coils Version 2020.03 Template Effective Date: 27 MAY 2019 | HOOD05162003010284 Effective Date: 10 SEP 2020 | HOOD05162003090666 © Siemens Healthineers, 2020 Management of the table and coils – SIEMENS Healthineers Table of Contents ISO – LOC – FIX (Isocenter, Local area, Fixed area) 3 Brain Dot Engine >LOC Y + HAL HAL AFI AAhead_scout Doe Pineapple Dos- Pineapple 23456 Doe, Pineapple 23456 11 IMA 1 FRM 3/5 12 1MX 1 FRM 213 13 IN1A 1 FRM 2/3 t1_se_sag Distortion correction 8 3 & Table Positioning Strategy t2_tse_tra_51 03:37 5 04:50 Automatic selection of coils t2_tse_dark-fluid_tra 11 6 ep2d_diff_3scan_trace_p2 01:47 AFL RAH RAH 7 t1_se_tra 02:25 inject contrast agent t1_se_tra 02:25 10 t1_se_co 02:27 TP O TP O TP O SP R2.9 SP P24.4 SP F 20.0 FoV 259 259 FoV 259+259 FoV 259*259 RIRESAIMP/NORMDIS 3D Ahead_scout_MPR_sag Sag>Con(-1>>Tra(1) 864 ... IMPRIRESAMPINORM/DIS3D CorTra[-14)>Sag(1) ... IMPRIRESAMPINORWDIS3D Cor(z)-Sag(-1) AAhead_scout MPR_cor 023 437 AAhead_scout MPR_tra W 731 417 17:31 FOT Go Cancel Table Positioning Strategy Select Table Positioning Strategy Iso Center Local Range Fixed Define Local Range Center Position by dragging the triangle in the planning segment(s) to the body part of interest. O Alternatively select one of the previously used positions or enter a particular position Local Range Position H 0 - mm O SAR Stimu injecto Normal Normal 2 Effective Date: 10 SEP 2020 | HOOD05162003090666 © Siemens Healthineers, 2020 ISO – LOC – FIX (Isocenter, Local area, Fixed area) – SIEMENS Healthineers Isocenter The static B0 magnetic field is only homogeneous in theory and decreases the further it moves from a specific point of the MRI: the isocenter (center of the magnet). This loss of spatial linearity, predominantly at the machine edges, is the cause of the distortion in these field lines: it Isocenter is therefore very important to acquire the images as close as possible to the isocenter, in order to maximize image patient table quality. magnet bore 00000 3 Effective Date: 10 SEP 2020 | HOOD05162003090666 © Siemens Healthineers, 2020 ISO – LOC – FIX (Isocenter, Local area, Fixed area) – SIEMENS Healthineers The different positioning modes Laser centering determines the zero position of the table. There are three positioning modes that are defined at the “Program” level: In normal scenarios the configuration in the Dot Cockpit is sufficient and the user should not worry at all about the table positioning modes when executing a MR examination. • ISO: The table moves systematically so as to place the center of volume of the sections to be acquired at the isocenter. LOC: A “solid gray triangle” marks the table zero on the left-hand side of the image in the ARH • positioning segment, halfway up. The table does not move, except in the event of the manual modification of the zero, or significant displacement of the center of volume of the sections to be acquired. • FIX: The table remains fixed at the position defined as zero. 4 Effective Date: 10 SEP 2020 | HOOD05162003090666 © Siemens Healthineers, 2020 ISO – LOC – FIX (Isocenter, Local area, Fixed area) – SIEMENS Healthineers Changing the positioning mode If the table positioning mode must be changed, e.g. SIEMENS ... Healthineers' .... Doe, Pineapple x * 1/1/1970 M 23456 because an examination of a different region should be Brain Dot Engine HAL HAL AFL LOC Doe, Pineapple Doe Pineapple included, this can done as described in the following. AAhead_scout 23456 Does Pineapple 11 IMA 1 FRM 3/5 12 IMA 1 FRM 2/3 13 IMA 1 FRIM 213 3 & Table Positioning Strategy te_use_tra_312 t2_tse_dark-fluid_tra A 04:50 To do so, you must enter Interaction: Add a Table ep2d_diff_3scan_trace_p2 01:47 AFL RAH AH 7 t1_se_tra 02:25 Positioning Strategy, either during the examination, by 8 inject contrast agent t1_se_tra 02:25 F 10 t1_se_co 02:27 TP O TP O right-clicking on the list of sequences to perform in the SP R2.9 SP F20.0 FoV 259 259 FoV 259 259 FoV 259 259 WIRESAMP/NORM/DIS3D Sag>Cor(-1)>Tra(1) Cor>Tra(-14)>Sag(1) Tra>Cor(12)>Sag(-1) AAhead_scout_MPR_Sag 864 ... IMPRIRESAMPINORI/DIS3D AAhead_scout_MPR_cor W 823 ... IMPRIRESAMP/NORMDIS3D AAhead_scout_MPR_tra W 731 436 437 measurement queue; or at the start, in the Program. 17:31 Go Cancel Table Positioning Strategy Select Table Positioning Strategy This interaction Table Positioning Strategy, supported by a Iso Center Local Range Fixed Define Local Range Center Position by dragging the triangle in the planning segment(s) to the body part of interest. guidance, makes it possible: • Either to remain in LOC mode but to move the gray Alternatively select one of the previously used positions or enter a triangle, which now becomes yellow, by clicking particular position Local Range Position 0 - mm O SAR Stimu directly on it and moving it. Inroom Exam Physio Inline Dot Injector Settings Settings Display Display Cockpit Control Normal Normal Mode Mode Waiting for slice positioning. • Or to switch to ISO mode • Or to switch to FIX mode. 5 Effective Date: 10 SEP 2020 | HOOD05162003090666 © Siemens Healthineers, 2020 ISO – LOC – FIX (Isocenter, Local area, Fixed area) – SIEMENS Healthineers Which positioning mode should be used in practice? • Using the LOC mode makes it possible to stop the table from being moved repeatedly (thus avoiding certain adjustments) while still offering the possibility of changing the zero (thanks to the Interaction: Table Positioning Strategy, or to switch to ISO mode automatically if the center of the sections is moved significantly from the initial zero. • Using the ISO mode is appropriate when exploring large fields of view, in order to reduce the effect of distortions at the edge of the field (spine, abdomen, long bones, etc.). All adjustments (shim) must be repeated each time the table is moved. • Using the FIX mode is reserved for interventions. 6 Effective Date: 10 SEP 2020 | HOOD05162003090666 © Siemens Healthineers, 2020 ISO – LOC – FIX (Isocenter, Local area, Fixed area) – SIEMENS Healthineers Which positioning mode should be used in practice? • In the Head–Foot direction In FIX mode, in the event of an overly eccentric group of sections moving too far from the isocenter, the system automatically indicates an alert by changing the color of the field of view to orange, accompanied by a warning icon. However, acquisition remains possible. In LOC mode, such a situation may also arise. In this case, ISO mode will be automatically activated. • In the Right–Left and Anterior–Posterior directions, this warning may appear. However, acquisition remains possible. 7 Effective Date: 10 SEP 2020 | HOOD05162003090666 © Siemens Healthineers, 2020 Distortion correction – SIEMENS Healthineers General Distortion correction makes it possible to eliminate the Without distortion With distortion geometric distortions present at the edge of the field. correction correction 8 Effective Date: 10 SEP 2020 | HOOD05162003090666 © Siemens Healthineers, 2020 Distortion correction – SIEMENS Healthineers The different distortion corrections HAL Doe, Pineapple Hospital 23456 1/1/1970, M, 50Y MAGNETOM Aera MR XA30 CURRENT HFS 4/15/2020 +LPH All sequences (with the exception of spectroscopy) are in distortion t1_se_sag latest correction mode (2D or 3D), although it is possible to request the STUDY ID 1bafd7bb-044b-4c 10:05:37 AM uncorrected images from the Resolution tab, then Filter, by clicking 14 IMA 1 FRM 13/25 on “ ” … . AFL ND: no distortion correction. 1cm • • DIS2D: 2D distortion correction activated. 2D • DIS2D*: 2D distortion correction activated in the case of an SL 5.0 SPC 6.5 acquisition carried out too far from the center of the magnet. TR 550.0 E TP O TE 8.9 SP R2.9 • DIS3D: 3D distortion correction TA 03:02 BW 151.0 FoV 230*230 MAGN JORM/DIS2D 256*320 Sag>Cor(-1)>Tra(1) A1 Zoom 3.40 HE1-4;NE1,2 W 1260 *se2d1 / 90 C 627 9 Effective Date: 10 SEP 2020 | HOOD05162003090666 © Siemens Healthineers, 2020 Distortion correction – SIEMENS Healthineers Incompatibilities between images Distorted images cannot be displayed at the same time as non- Dot @ 4:56 min Auto 9 20x20x20 mm3 ~ 1.00 distorted images in the positioning segments. Spectroscopy Parameters Spectroscopy steps can only be planned on non-distortion corrected images. An automatic process is initiated during the acquisition of a Please do the following steps for examination planning: drag all series needed for planning into GSP spectroscopy sequence, with the automatic generation of images preselect the region of spectroscopy examination by placing a ROI on one series press "Convert images" to generate non-distortion corrected images for planning the converted images will be automatically loaded into the GSP that have no distortion correction. plan your spectroscopy examination For multiple spectroscopy measurements with the same position and voxel size, please use "Copy Parameter" with "Measurement Parameters" or "Everything" after conversion of the images. Please note: This process does not work with images corrected with 3D distortion correction. Convert images 10 Effective Date: 10 SEP 2020 | HOOD05162003090666 © Siemens Healthineers, 2020 Automatic selection of coils – SIEMENS Healthineers Why it is used Activating the automatic coil selection mode activates the coil elements located near the area to be acquired. 11 Effective Date: 10 SEP 2020 | HOOD05162003090666 © Siemens Healthineers, 2020 Automatic selection of coils – SIEMENS Healthineers Selection modes Dot @ 3:07 min 4 Auto 0.7x0.7x5.0 mm3 1.00 Routine Contrast Resolution Geometry System Physio Inline Sequence Three automatic coil selection modes can be chosen in the System Coils Miscellaneous Adjustments Adjust Volume Tx/Rx Coil Selection Auto Coil Select ... Coil Combination Adaptive Combine ... tab, then Miscellaneous, Coil selection: Auto Coil Select: Coil elements are selected automatically. • Auto Coil Select: The coil elements are selected automatically MSMA S - C - T • ACS All but spine: The system will select all the coils next to Sagittal R > > L ACS All but spine: Coil elements of all coils except spine are selected automatically. the section package, excluding the Spine coil. Coronal A >> P ACS Restricted: Transversal Coil elements of only the preconfigured coil are selected automatically. • ACS Restricted: By clicking on the “ ... , ” you can select the coils F >> H Manual: you want to use during the acquisition, as well as the option Coil selection is determined by the protocol option chosen on the System / Miscellaneous parameter tab. below. • Manual: The selected coils are determined by the protocol options you have selected. Coil Selection X Please note: By clicking on “ … ” you can activate 3 levels of selection sensitivity: Coil Coverage Standard Minimize • Minimize: the field of view must be located in at least 30% of Standard Generous the coil element in order to activate it. • Standard: the field of view must be located in at least 15% of the coil element in order to activate it. • Generous: the field of view must be located in at least 5% of the coil element in order to activate it. Close 12 Effective Date: 10 SEP 2020 | HOOD05162003090666 © Siemens Healthineers, 2020 Automatic selection of coils – SIEMENS Healthineers In practice The automatic coil selection mode must be prioritized in order to always adapt the activated coil elements relative to the position of the field of view. The ACS all but spine and ACS restricted modes allow the usage for Auto Coil Select for all different examinations also for cases in which the manual mode was used before: e.g. • to use an ortho coil placed on the spine coil (Hand/Wrist, Knee, Foot/Ankle ), or • to deactivate the anterior part of the Head +/- Neck coil when carrying out a cervical spine examination • To deactivate the Body Matrix when carrying out a lumbar spine + pelvis examination. 13 Effective Date: 10 SEP 2020 | HOOD05162003090666 © Siemens Healthineers, 2020 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'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 Healthcare GmbH 2020 Siemens Healthineers Headquarters Siemens Healthcare GmbH Henkestr. 127 91052 Erlangen, Germany Telephone: +49 9131 84-0 siemens.com/healthineers 14 Effective Date: 10 SEP 2020 | HOOD05162003090666 © Siemens Healthineers, 2020