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Avoiding Systematic Errors of Fiber-optic Temperature Probes: MR Thermometry for Safety Assessment of Small Planar Metallic Structures

Compact 3T MRI for imaging patients with implanted devices: Maximum gradient slew rate considerations

Author:Matt Bernstein  Heidi Edmonson  Yihe Hua  Robert Watson  John Huston III  Joel Felmlee  Thomas Foo  Yunhong Shu  

Institution:GE Global Research  Mayo Clinic  Mayo Clinic  

Session Type:Digital Poster  

Session Date:Wednesday, 15 May 2019  

Session Time:15:45  

Session Name:RF & Gradient Safety Methods  

Program Number:4197  

Presentation Time:15:45   

Room Number:Exhibition Hall  

Computer Number:Computer 172  

Compact 3T MRI for imaging patients with implanted devices: RF and SAR consideration

Author:Yunhong Shu  Nolan Meyer  Lydia Bardwell  Matthew Tarasek  Yihe Hua  Robert Watson  Krzysztof Gorny  Heidi Edmonson  Joel Felmlee  Thomas Foo  Matt Bernstein  

Institution:GE Global Research  Mayo Clinic  Mayo Clinic  

Session Type:Digital Poster  

Session Date:Wednesday, 15 May 2019  

Session Time:15:45  

Session Name:RF & Gradient Safety Methods  

Program Number:4189  

Presentation Time:15:45   

Room Number:Exhibition Hall  

Computer Number:Computer 164  

Comparison of Device Vibration Induced by Trapezoidal and Sinusoidal Gradient Waveforms

Author:Christine Wawrzyn  William Handler  Colin McCurdy  Blaine Chronik  

Institution:Western University  

Session Type:Digital Poster  

Session Date:Wednesday, 15 May 2019  

Session Time:15:45  

Session Name:RF & Gradient Safety Methods  

Program Number:4194  

Presentation Time:15:45   

Room Number:Exhibition Hall  

Computer Number:Computer 169  

Comparison of Simulated and Robotically Mapped RF Fields in 64 and 128 MHz Medical Implant Test Systems

Author:Krzysztof Wawrzyn  Jack Hendriks  Dereck Gignac  William Handler  Blaine Chronik  

Institution:Western University  

Session Type:Digital Poster  

Session Date:Wednesday, 15 May 2019  

Session Time:15:45  

Session Name:RF & Gradient Safety Methods  

Program Number:4183  

Presentation Time:15:45   

Room Number:Exhibition Hall  

Computer Number:Computer 158  

Concurrent scalp and intracranial electroencephalography recording in a human 1.5T MRI scanner: RF-induced heating assessment

Control of Gradient Output for Limiting AIMD Gradient Induced Device Heating

Author:Michael Childers  Shiloh Sison  

Institution:Abbott  

Session Type:Digital Poster  

Session Date:Wednesday, 15 May 2019  

Session Time:15:45  

Session Name:RF & Gradient Safety Methods  

Program Number:4198  

Presentation Time:15:45   

Room Number:Exhibition Hall  

Computer Number:Computer 173  

Determination of local SAR through MR Thermometry at 7T

Gradient dB/dt Heating Measurements of Copper, Steel, and Titanium Annuli: Assessment of Measurement Repeatability, and Identification of a Potential Reference Standard

Author:Joel Crane  Christine Wawrzyn  William Handler  Blaine Chronik  

Institution:University of Western Ontario  

Session Type:Digital Poster  

Session Date:Wednesday, 15 May 2019  

Session Time:15:45  

Session Name:RF & Gradient Safety Methods  

Program Number:4200  

Presentation Time:15:45   

Room Number:Exhibition Hall  

Computer Number:Computer 175  

Influence of the Electrode Diameter on Radio Frequency-induced Heating in MRI

Author:Johannes Erhardt  Thomas Lottner  Jessica Martinez  Ali Özen  Martin Schuettler  Thomas Stieglitz  Daniel Ennis  Michael Bock  

Institution:CorTec  Stanford University  University Medical Center Freiburg  University of California Los Angles  University of Freiburg  

Session Type:Digital Poster  

Session Date:Wednesday, 15 May 2019  

Session Time:15:45  

Session Name:RF & Gradient Safety Methods  

Program Number:4191  

Presentation Time:15:45   

Room Number:Exhibition Hall  

Computer Number:Computer 166  

Initial comparison of RF-induced heating in the ASTM phantom and a cadaver leg: a pilot study

Author:Amgad Louka  Krzysztof Wawrzyn  Alan Getgood  Timothy Burkhart  William Handler  Blaine Chronik  

Institution:Fowler Kennedy Sports Medicine Clinic, Western University  Lawson Health Research Institute  Western University  

Session Type:Digital Poster  

Session Date:Wednesday, 15 May 2019  

Session Time:15:45  

Session Name:RF & Gradient Safety Methods  

Program Number:4177  

Presentation Time:15:45   

Room Number:Exhibition Hall  

Computer Number:Computer 152  

Mitigating heating risk for long active metallic-backbone or metallic-braided cardiovascular devices using miniaturized Baluns (MBaluns): Design parameters, heating tests, and swine validation

Neurostimulation Safety Investigations using Reference, Posable Anatomical Models

Author:Antonino Cassara'  Bryn Lloyd  Silvia Farcito  Esra Neufeld  Gisela Hagberg  Niels Kuster  

Institution:Foundation for Information Technology in Society  Max Plank Institute  Swiss Federal Institute of Technology (ETHZ)  

Session Type:Digital Poster  

Session Date:Wednesday, 15 May 2019  

Session Time:15:45  

Session Name:RF & Gradient Safety Methods  

Program Number:4199  

Presentation Time:15:45   

Room Number:Exhibition Hall  

Computer Number:Computer 174  

On the RF Excitation of Overlapping Stents: Electro-optical E-field Measurements

Author:Simon Reiss  Thomas Lottner  Ali Özen  Michael Bock  Andreas Bitzer  

Institution:Medical Center University of Freiburg, Faculty of Medicine, University of Freiburg  University of Applied Sciences HTW Chur  

Session Type:Digital Poster  

Session Date:Wednesday, 15 May 2019  

Session Time:15:45  

Session Name:RF & Gradient Safety Methods  

Program Number:4192  

Presentation Time:15:45   

Room Number:Exhibition Hall  

Computer Number:Computer 167  

Parallel RF Transmission for Safe 3 T MRI of Deep Brain Stimulation Devices: Effect of Mis-positioned Suppression Mode

Author:Benson Yang  Pei-Shan Wei  Simon Graham  

Institution:Sunnybrook Research Institute  University of Toronto  

Session Type:Digital Poster  

Session Date:Wednesday, 15 May 2019  

Session Time:15:45  

Session Name:RF & Gradient Safety Methods  

Program Number:4181  

Presentation Time:15:45   

Room Number:Exhibition Hall  

Computer Number:Computer 156  

Planning Current Nulling for Worst Case SAR reduction in a Cardiac Guidewire Scenario at 1.5T

Author:J. Nuno Teixeira  Felipe Godinez  Shaihan Malik  Joseph V. Hajnal  

Institution:King's College London  King's College London  

Session Type:Digital Poster  

Session Date:Wednesday, 15 May 2019  

Session Time:15:45  

Session Name:RF & Gradient Safety Methods  

Program Number:4179  

Presentation Time:15:45   

Room Number:Exhibition Hall  

Computer Number:Computer 154  

Radiofrequency Heating of MR-conditional Needles during Interventional Magnetic Resonance Imaging at 1.5 and 3 Tesla Field Strengths

Author:Iman Khodarahmi  Luke Bonham  Clifford Weiss  Jan Fritz  

Institution:Johns Hopkins University School of Medicine  New York University School of Medicine  New York University School of Medicine  

Session Type:Digital Poster  

Session Date:Wednesday, 15 May 2019  

Session Time:15:45  

Session Name:RF & Gradient Safety Methods  

Program Number:4188  

Presentation Time:15:45   

Room Number:Exhibition Hall  

Computer Number:Computer 163  

Repeatability of measured RF transfer functions of IPG and lead based AIMD systems

Author:Carolyn Kwok  Mizan Rahman  Ross Venook  Louai Aldayeh  

Institution:Boston Scientific  

Session Type:Digital Poster  

Session Date:Wednesday, 15 May 2019  

Session Time:15:45  

Session Name:RF & Gradient Safety Methods  

Program Number:4186  

Presentation Time:15:45   

Room Number:Exhibition Hall  

Computer Number:Computer 161  

Retrospective evaluation of the maximum MR image artifact size according to ASTM F2119 with respect to sequences and slice orientations relevant for MR compatibility testing

Safety Assessments in the Cascaded Media Using an Electro-optic Sensor-based Transfer Function Measurement Setup

Safety of active catheters in MRI: Termination impedance versus RF-induced heating

Author:Ali Özen  Thomas Lottner  Michael Bock  

Institution:Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg  German Cancer Research Center (DKFZ)  

Session Type:Digital Poster  

Session Date:Wednesday, 15 May 2019  

Session Time:15:45  

Session Name:RF & Gradient Safety Methods  

Program Number:4176  

Presentation Time:15:45   

Room Number:Exhibition Hall  

Computer Number:Computer 151  

Spoiler, Crusher, and Diffusion Gradient Pulses Yield Higher PNS Thresholds than Long Pulse Trains in Head-only Gradient Coils

Author:Colin McCurdy  William Handler  Blaine Chronik  

Institution:The University of Western Ontario  

Session Type:Digital Poster  

Session Date:Wednesday, 15 May 2019  

Session Time:15:45  

Session Name:RF & Gradient Safety Methods  

Program Number:4195  

Presentation Time:15:45   

Room Number:Exhibition Hall  

Computer Number:Computer 170  

Superadditive RF Heating in Gaps between Two Metallic Implants

Author:Manuel Murbach  Esra Neufeld  Ilaria Liorni  Niels Kuster  

Institution:IT'IS Foundation  Swiss Federal Institute of Technology (ETH)  

Session Type:Digital Poster  

Session Date:Wednesday, 15 May 2019  

Session Time:15:45  

Session Name:RF & Gradient Safety Methods  

Program Number:4187  

Presentation Time:15:45   

Room Number:Exhibition Hall  

Computer Number:Computer 162  

The effect of spatial averaging on dB/dt exposure values for implanted medical devices

Author:Christopher Brown  Blaine Chronik  

Institution:University of Western Ontario  

Session Type:Digital Poster  

Session Date:Wednesday, 15 May 2019  

Session Time:15:45  

Session Name:RF & Gradient Safety Methods  

Program Number:4196  

Presentation Time:15:45   

Room Number:Exhibition Hall  

Computer Number:Computer 171  

Verification and validation of a dB/dt exposure system using a robotic positioning system and induction field probe.

Author:Christine Wawrzyn  Ali Attaran  Jack Hendriks  Ryan Chaddock  Dereck Gignac  William Handler  Blaine Chronik  

Institution:Western University  

Session Type:Digital Poster  

Session Date:Wednesday, 15 May 2019  

Session Time:15:45  

Session Name:RF & Gradient Safety Methods  

Program Number:4193  

Presentation Time:15:45   

Room Number:Exhibition Hall  

Computer Number:Computer 168