Greg Freiherr, Industry Consultant
Greg Freiherr, Industry Consultant

Greg Freiherr has reported on developments in radiology since 1983. He runs the consulting service, The Freiherr Group.

Blog | Greg Freiherr, Industry Consultant | Magnetic Resonance Imaging (MRI)| March 23, 2016

Advanced Visualization and the Future of MR


GE’s recently unveiled cardiac product ViosWorks demonstrates the symbiotic relationship between advanced visualization and MR. (Image courtesy GE Healthcare)

There is something about magnetic resonance (MR). The elegance of its mathematics. How it leverages the electromagnetic spectrum and the concepts of quantum mechanics. Certain … and uncertain. MR is the cat inside Schrödinger's box.

The nature of MR pairs it perfectly with advanced visualization, the acquisition of radio signals sent by atoms, transformed into images of tissue inside the body.

It is little wonder that the future of this modality — more than any other — is being defined by progress in software and the advanced visualization that naturally follows.

GE Healthcare is leveraging a “GPU smart cloud platform” as the means for post-processing MR cardiac. The company’s ViosWorks promises a comprehensive and practical means for providing cardiac anatomy and function. While the company claims the scan might be completed in as little as eight minutes, with the patient breathing freely, scans in reality may take up to 20 minutes. They will not, however, require a technologist expert in the performance of the scan or highly and especially trained clinicians, according to GE. The company, in fact, is framing exams with ViosWorks as simplified and requiring no particular supervision.

Toshiba’s dedicated MR sequence for pulmonary imaging is another example of the unique relationship between MR and advanced visualization. This sequence, called ultrashort echo time (UTE), visualizes what is all but invisible using conventional MR. Pulmonary images obtained using UTE were remarkably similar to those obtained of the lung using CT, as indicated by images from the two modalities placed side-by-side at the last RSNA.

The growth potential of these applications — MR lung in place of CT; MR cardiac in place of cardiac cath — is obvious in this age of heightened concern about exposing patients to ionizing radiation.

New techniques and protocols for MR abdominal scanning, as well as for the prostate, promise to increase procedure volume above and beyond historical trends. Ditto for time-saving protocols, such as Siemens’ GoBrain and Simultaneous Multi-Slice (SMS), which the company claims will dramatically reduce the time needed for MR brain scans. (GoBrain provides validated “push-button” brain exams that can be done in five minutes; SMS acquires human slices simultaneously rather than sequentially, as is done conventionally.)

Variants of Philips’ mDIXON provide images with multiple contrasts, each coming from a single scan; Philips’ ScanWise Implant, that reduce or eliminate artifacts, while optimizing scan time through the use of an MR-guided user interface and automatic scan parameter selection. (ScanWise is designed specifically for patients with knee, hip and spine implants, as well as pacemakers.)

MR has already carved a niche in breast imaging, thanks to software advances. MR breast visualization packages support processing in four dimensions. Dynamic 3-D presentation and data analysis tools automate lesion analysis and chest wall removal, while transferring data to BI-RADS reports. Hologic’s MultiView software captures the washing in and out of a contrast medium into regions of interest in the breast as it colorizes diffusion apparent diffusion coefficient (ADC) maps to help identify highly diffused areas.

Less well known but commercially available are software packages that localize cancer tumors for use in MR-based simulations of radiotherapy. A product available from GE, AdvantageSim MD, includes iso center marking and beam planning tools, as well as the means for contouring at-risk organs and plotting, and respiratory induced motion.

While it may not be surprising that MR provides fertile ground for such a range of visualizations, the matchless wonder of this modality is grounds for at least momentary reflection on what has been achieved. It offers just a sampling of what is yet to come.

Editor’s note: This is the fourth blog in a series of four by industry consultant Greg Freiherr on MR Balances Speed and Clinical Reach. To read MR is About to Get Faster, Cheaper and More Valuable: It's About Time, click here; to read The Unsettling Evolution of Advanced Visualization, click here, and to read “How Increased Productivity Might Pave the Way to Personalized Medicine,” click here.

Revision note: The post-processing for ViosWorks, a partnership with Arterys, will be done on a GPU smart cloud platform, not on the GE Health Cloud, as was initially stated in this blog. As of April 6, the time of this revision, ViosWorks is not commercially available.

Related Content

FDA Clears Advancements for Viewray MRIdian Radiation Therapy System
Technology | Image Guided Radiation Therapy (IGRT) | February 21, 2019
February 21, 2019 — ViewRay Inc. received 510(k) clearance from the U.S.
MRI and Computer Modeling Reveals How Wrist Bones Move

Using fast MRI, UC Davis researchers scanned left and right wrists of men and women and used the data to build computer models of the movement of wrist bones. The data could help understand wrist injuries such as carpal tunnel syndrome. Image courtesy of Brent Foster and Abhijit Chaudhari, UC Davis.

News | Magnetic Resonance Imaging (MRI) | February 19, 2019
In a just-published Journal of Biomechanics article, the researchers proved a longtime assumption about individuals'...
Siemens Healthineers Demonstrates Artificial Intelligence, Healthcare Digitalization at HIMSS19
News | Artificial Intelligence | February 13, 2019
February 13, 2019 — At the 2019 Healthcare Information and Management Systems Society (HIMSS) global conference and e
Fujifilm Launches Latest Synapse 3D Version at HIMSS 2019

The new Intravoxel Incoherent Motion (IVIM) MR application in Synapse 3D

Technology | Advanced Visualization | February 08, 2019
Fujifilm Medical Systems U.S.A. will debut the latest version of its Synapse 3D solution at the Healthcare Information...
Study Assesses Risk of MRI Exams for Patients With Tattoos
News | Magnetic Resonance Imaging (MRI) | February 01, 2019
A new European study concluded that magnetic resonance imaging (MRI) exams pose little risk for people with tattoos,...
FDA Clears Perspectum's MRCP+ Digital Biliary Tree Viewer
Technology | Magnetic Resonance Imaging (MRI) | January 24, 2019
Perspectum Diagnostics received 510(k) clearance from the U.S. Food and Drug Administration (FDA) for its MRCP+...
Machine Learning Uncovers New Insights Into Human Brain Through fMRI
News | Neuro Imaging | January 11, 2019
An interdisciplinary research team led by scientists from the National University of Singapore (NUS) has successfully...
Hypertension With Progressive Cerebral Small Vessel Disease Increases Cognitive Impairment Risk
News | Magnetic Resonance Imaging (MRI) | January 08, 2019
Patients with high blood pressure and progression of periventricular white matter hyperintensities showed signs of...