MRI in Radiation Therapy

Peer-to-peer exchange of protocols, articles and tips

MRI in Radiation Therapy
 
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The Application Tips are a platform to contribute and to continuously expand your knowledge. Share your experience with other MAGNETOM users and perfect your ability to exploit the full potential of your MAGNETOM system.


In order to optimize Radiotherapy Planning for MRI, care must be taken to reduce geometric distortions as much as possible. The RT Dot Engine is designed with optimized protocols for Radiotherapy planning and is one tool to help mitigate distortions. For users who have created their own sequences or customized certain ones, other tools may help to reduce geometric distortions. For those users, there may be several specific parameters that need to be checked for each different sequence type. The Siemens Generic View AddIn allows you to create a bespoke template for your individual needs enabling you to quickly move the AddIn from one sequence to the next to efficiently check your chosen parameters. Three examples are given for RESOLVE, TSE, and SPACE. E.g. where a T2 sequence has been optimized but a T1 is needed. The AddIn can be moved to the new sequence and the parameters checked prior to scanning.


Application Tips

Optimizing MRI sequences and images for MRI-based stereotactic radiosurgery treatment planning

Ali Fatemi, Ph.D. et al., University of Mississippi Medical Center, Jackson, MS, USA

 

Machine-specific MRI quality control procedures for stereotactic radiosurgery treatment planning

Ali Fatemi, Ph.D. et al., University of Mississippi Medical Center, Jackson, MS, USA

 

Whole-body MRI at 1.5T – step-by-step

Will McGuire, Anwar Padhanin et al., Paul Strickland Scanner Centre, Mount Vernon Hospital, Northwood, Middlesex, UK

 

How-I-Do-It: Comprehensive RT-Specific QA for MRI Simulation

Eric Paulson, Ph.D., DABR, Medical College of Wisconsin, Radiation Oncology, Milwaukee, WI, USA

 

MRI Geometric Distoriton QA. Using the ACR MRI Accrediation Phantom

This document is a brief instruction on how the ACR (American College of Radiology) accreditation phantom can be used to evaluate geometric distortions in MRI for quality assurance (QA) purposes.

 

Evaluation of the CIVCO Indexed Patient Position System (IPPS) MRI-Overlay for Positioning and Immobilization of Radiotherapy Patients

Thomas Koch, Ph.D., et al., Klinik und Praxis für Strahlentherapie und Radioonkologie, Sozialstiftung Bamberg, Germany

 

MAGNETOM Combi Suite Radiation Therapy. Combining MRI Intelligence and Therapeutic Expertise

Annemarie Hausotte, Ph.D., Siemens Healthineers, Erlangen, Germany

 

MAGNETOM Skyra as an MR Sim

Gary Liney, Liverpool Cancer Therapy Centre, Sydney, Australia


Insights

In this section, you will learn more about the functionality and advantages of MRI and its special use in Radiation Therapy (RT).

Why MRI in RT? – The clinical motivation

Recently there is a growing interest in the use of magnetic resonance imaging in radiation therapy. This is due to the many attractive features for radiation therapy that MRI has to offer.

What is MRI and how does it work? – Part 1

In this session you will learn about the basic principles of an MRI signal and the different ways it is acquired.

What is MRI and how does it work? – Part 2

In this advanced module about MRI and how it works, you can have a closer look at how the different contrasts can be obtained, and how the MR image is generated from the Free Induction Decay signals.

Challenges in MRI in RT

In this module you will learn more about the challenges and their solutions in MRI for radiation therapy and get a better understanding of the differences between MRI for diagnostic imaging and RT planning.

Solving the challenges of MR in RT: Signal, noise, distortion – 1.5T vs 3T

In this session, we focus on how the magnet and gradient design of an MRI system influences high resolution and low distortion combined with a large field of view as the key requirements for MR imaging in Radiation Therapy.

Solving the challenges of MR in RT: Gradients, RF system and coils

We will have a closer look at the gradient and Radio Frequency coils and how they can help to solve the specific challenges of using MRI in Radiation Therapy.

Solving the challenges of MR in RT: Sequences, incl. DWI, Perfusion, Spectroscopy

This session explains how the MR sequences and their special variants can help overcome the challenges faced when using MR imaging in Radiation Therapy.

Solving the challenges of MR in RT: QA for MR | MR Safety | MR Installation

Get to know more about how to ensure a consistent and high image quality, how a MR system is installed correctly and what kind of safety precautions need to be taken to ensure a safe use of the system.

MRI Acronyms

Cross-Vendor Comparison.

30 years of MRI at Siemens

A success story.

1The products/features shown on this webpage are not commercially available in all countries. Due to regulatory reasons their future availability cannot be guaranteed. Please contact your local Siemens organization for further details.

2syngo.via VB10 and the syngo.via VB10 based software options are currently under development, and not for sale in the U.S., China and other countries. Due to regulatory reasons its future availability cannot be guaranteed. Please contact your local Siemens organization for further details.

3syngo.via VB10 and the syngo.via based software options are currently under development; not for sale in the U.S. and other countries. Future availability cannot be guaranteed.

The herein illustrated statements made by Siemens’ customers and physicians are based on their own and discrete opinion and do not reflect Siemens' opinion. Siemens dissociates from the content and Siemens does not intend to promote the content of the statement as true, state of the art or as Siemens opinion. The Siemens' customers and physicians have not made these statements due to any financial support or contribution by Siemens or due to any other contractual obligation. The distribution of these statements by Siemens shall only illustrate the variety of different opinions and approaches regarding MR technology.