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MR Safety
October 18–20, 2012
Vienna/AT
In order to register, please click here:
Registration information:
Please click here for further details on the registration fees and regulations.
Course organiser:
Siegfried Trattnig, Vienna/AT
Local organiser:
Siegfried Trattnig, Vienna/AT
Course venue:
MR Centre of Excellence for High-field MR
Lazarettgasse 14
1090 Vienna
Austria
Faculty:
P. Bauer, O. Clement, H. Engels, S. Keevil, C. Löwe, A. Melzer,
M. Mühlenweg, G. Schaefers, F. Schick, S. Trattnig
Course duration:
Thursday morning – Saturday noon
This course is limited to 30 participants!
Hotel recommendations:
Please click here for a list of recommended hotels in Vienna.
Preliminary programme (updated October 8, 2012):
Please click here to download the preliminary programme as PDF.
The aim of this course:
The aim of the course is to offer deep insights into the complex physical laws of MR interactions and their dangers with respect to the static magnetic field, the HF field and the gradient fields as well as detailed knowledge of actual laws and norms. In addition the course will provide the training of practical abilities such as to save humans from the control area, behaviour in case of fire and magnetic emergency. We will also focus on competence and the expertise in clinical strategies how to handle implant safety issues in the MR environment, enhance patient safety and improve the MR workflow in daily routine by avoiding unnecessary loss of scanner time. The course will provide a combination of lectures and practical training sessions in smaller groups.
Participation requirements:
The target group can be subdivided into the following three categories:
Hospital: radiologist, radiological technologist, physician, anaesthesiology staff, nurse, technical or medical researcher, maintenance staff and patient supervisor
Scientific institute: operator / bio-technician, researcher, maintenance staff
MRI manufacturer: application specialists, researcher, developer, system tester, production staff member
Learning Objectives
Statutory framework, standards, responsibilities, EU directive
• MRI in the context of European health and safety legislation
• Existing national and international EMF exposure guidelines and standards
• EC standard 60601-2-33
• The Physical Agents (EMF) Directive: state of play and possible future developments
Introduction to construction and function of an MRI scanner
• Update on MR scanner components
• Update on MR basics
A systematic overview on MR interactions with magnetic and electrically conductive materials
• Characteristics of the static magnetic field inside and around a clinical MR system
• Forces and torques acting on magnetic materials in static magnetic fields
• Characteristics of the radiofrequency electromagnetic transmitter field and of the gradient fields
• Induction of electrical currents by time varying electrical and magnetic RF fields in conductive structures and tissue
• Conditions for undesired heating effects
Risks in MRI I: static B0 field, dangers due to superconductors
• Value of the static magnetic field around the magnet
• Exposure limits for static magnetic fields
• Potential risks for human exposure to static magnetic fields
• Dependency of physiologic effects on relevant parameters of the static magnetic field
• Potential risks of superconducting magnets
Risks in MRI II: MR gradients and RF
• Exposure limits for low frequency gradient fields
• Potential risks for humans with gradient fields
• Exposure limits for high frequency HF fields
• Potential risks of high frequency HF fields
• Dependency of SAR from the static magnetic field
Contrast agents, pregnancy
• Chemical characteristics of Gd chelates
• Risks of Nephrogenic Systemic Fibrosis
• Evaluation of renal function
• Allergic reactions with Gd chelates
Implant problems and optimisation. Researching implants
Impact of implants on clinical MRI, its pitfalls and financial
consequences by example of the Department of Radio diagnostic
of the General Hospital of Vienna
• Strategies of improvement
• Workflow
• Effective research of MRI-conditions of implants
• Understanding the details of MRI-conditions of implants
• Special implants and future development
• MRI conditional pacemaker
• Fixed Parameter mode
• Exchange of personal experience and strategies by the class
MR safety issue in Interventional MR
• Principles of Interventional MRI
• Potential risks for clinicians and patients
• Technical requirements for safe Interventional MRI
• Limitations of Visualisation and Tracking of interventional Devices
• How to avoid reaching exposure limits during interventions
Cardiovascular implants and cardiac pacemakers in MRI
• To discuss risks and subsequent limitations of MR imaging after stent and stentgraft implantation
• To discuss the risks of conventional, ‘old’ cardiac pacemakers
• To present the advantages and limitation of new, MRconditional pacemakers
• To discuss the possibilities of MR examinations after cardiac pacemaker implantation
• To present the newest guidelines of MR safety after stent and pacemaker implantation
Safety basics and quality management
• Pre-MR – Screening Procedures
• Patient MRI Safety Screening Form
• Safety Questions and Information
• Correct patient positioning while measurement
• Safety documents
MR worker training, documentation duties
Documentation provided by the MR manufacturer
• Exposure limits for MR workers
• Potential risks for MR workers
• Training requirements for the MR worker
• Responsibilities of the MR worker
Practical session: Systematic inspection with entering the MR area
• Definition of zones within the MR environment, in particular zone III and IV
• Supervision of entrance to the magnet room and the ways how to control it
• Labelling of equipment with respect to MR safety (MR safe, unsafe)
• To get familiar with the location of emergency equipment
Practical session: Demonstration of MR effects
• Spatial distribution of the static magnetic field of wholebody MR systems
• Forces and torques on different materials. Eddy current effects on moving conductive plates
• Generation of image artefacts by (slightly) magnetic materials
• Generation of image artefacts by conductive ring structures
• Heating in copper rings with different ohmic resistance
Practical session: Emergency situations
• Training of typical medical emergency situations in a live MRI setting
• Recalling and practicing of means of basic life support techniques including Resuscitation
• Emergency evacuation of persons directly out of the MRI scanner
Practical session: Researching implants and apply MR labelling in practice
• To understand the parameter complexity of MR labelling of devices/items
• To differentiate between different MR interactions
• To know the necessities for interpretation of MR labelling
• To apply MR labelling in practice
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