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 | August 26, 2011

Thinking Inside the Box

Hard to believe 18 years have passed since I dropped into the engineering lab of Diasonics Ultrasound, a visit brought to mind today by the unveiling half way around the world of another advance in diagnostic ultrasound. That visit and today’s announcement in Vienna, Austria, at the World Federation for Ultrasound in Medicine and Biology demonstrate what ultrasound has become and, for the foreseeable future, will continue to be.

In that Milpitas, Calif., lab in 1993, I saw strewn across a workbench the prototype of the ultrasound industry’s first vascular road-mapping product.  Until then, vascular sonography had processed just the frequency of sound waves. This technology, dubbed UltrasoundAngio,  processed the amplitude of sound waves to create static images of blood perfusion.

The team at Diasonics had done what others in the industry would soon hustle to replicate. They had found a way to process otherwise unused data to create images unlike any ever made with ultrasound.  Over the next two decades, this would become a familiar reprise.

Later development of tissue harmonics would increase signal-to-noise so much that the details of pathologies previously unseen would become crystal clear. Those images came from processing higher frequencies – the harmonics – produced when ultrasound pulses go through body tissue…signals that previously had not been captured.

Shearwave elastography with its palpating virtual finger of sound added a new wrinkle to the face of ultrasound, compressing tissues for an instant so that conventional ultrasonic imaging could gauge tissue elasticity. Because malignant tissues are stiffer than healthy ones, shearwave elastography raises the prospect of helping to assess the breast, prostate, liver and other organs for cancer. This potential, and the possibility that elasticity may indicate other disease states as well, are still being studied, as ultrasound technology continues to advance, repeating this pattern of thinking not outside the box, but in.

Supersonic Imagine, the French pioneer of shearwave elastography, today unveiled technology that combines color flow imaging and pulsed wave Doppler, producing what the company says are color flow clips with 10 times the frame rate of conventional color Doppler. This new product, dubbed UltraFast Doppler, also quantifies the Doppler data.

Peter Burns, a professor of medical biophysics at the University of Toronto, says the advance is clinically significant in two ways. First, it has the speed to reveal pathology in arterial imaging that would otherwise be obscured by aliasing artifacts. Second, it speeds workflow by combining the pulsed Dopper and color flow acquisitions.

So it is that this latest wrinkle adds to the character of diagnostic ultrasound, which has progressed beyond the easy pickings of its youth. With maturity has come iterative development and improvement that find value in what has been overlooked and what has yet to be combined.

Related Content

Technology | Ultrasound Imaging | August 18, 2017
August 18, 2017 — SuperSonic Imagine recently introduced the newest version of its premium...
Pentax Medical Launches New Slim Linear Ultrasound Endoscope
Technology | Endoscopes | August 17, 2017
Pentax Medical Co. announced the U.S. launch of the Slim Linear Ultrasound Endoscope (EG-3270UK), the company's newest...
Houston Methodist Hospital Enters Multi-Year Technology and Research Agreement With Siemens Healthineers
News | Imaging | August 17, 2017
Houston Methodist Hospital and Siemens Healthineers have entered into a multi-year agreement to bring cutting-edge...
Clarius Wireless Ultrasound Scanners Now Available With Advanced Features
News | Ultrasound Imaging | August 09, 2017
Clarius Mobile Health has released advanced features and options for its wireless handheld ultrasound scanner for...
Oregon Tech Partners with Mindray for High-Tech Ultrasound Education
News | Ultrasound Imaging | August 04, 2017
To better prepare its ultrasound students to compete and thrive in the evolving healthcare environment, Oregon...
Carestream Shows Touch Prime Systems at Society for Vascular Ultrasound Conference
News | Ultrasound Imaging | August 03, 2017
Carestream will showcase its Carestream Touch Prime and Touch Prime XE Ultrasound Systems at the Society for Vascular...
Contrast Media from Bayer, trends in contrast media and developments in contrast media
Feature | Contrast Media | July 28, 2017 | By Dave Fornell
Here are several updates in medical imaging ...
3-D Vascular Ultrasound Quantifies Plaque Burden to Estimate Cardiovascular Risk
News | Cardiovascular Ultrasound | July 20, 2017
In a large, first-of-its-kind population, researchers found an experimental technique known as three-dimensional...
Floyd Medical Center Acquires Quartet of Toshiba Cardiac Ultrasound Systems
News | Cardiovascular Ultrasound | July 19, 2017
Floyd Medical Center in Rome, Ga., recently installed three new Aplio 500 Platinum CV ultrasound systems from Toshiba...
Overlay Init