Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Ultrasound upgrade produces images that work like 3-D movies

26.04.2007
Parents-to-be might soon don 3-D glasses in the ultrasound lab to see their developing fetuses in the womb "in living 3-D, just like at the IMAX movies," according to researchers at Duke University's Pratt School of Engineering.

The same Duke team that first developed real-time, three-dimensional ultrasound imaging says it has now modified the commercial version of the scanner to produce an even more realistic perception of depth. Paired images seem to pop out of the screen when viewed with the special glasses.

The researchers created an updated version of the image-viewing software found on clinical ultrasound scanners, making it possible to achieve a stereo display with no additional hardware.

"To our knowledge, this is the first time it's been made possible to display real-time stereo image pairs on a clinical scanner," said Stephen Smith, a professor of biomedical engineering at Duke. "We believe all 3-D scanners could be modified in this way with only minor software changes."

The new imaging capability can improve the early diagnosis of certain kinds of birth defects of the face and skull and improve surgeons' depth perception during ultrasound-guided medical procedures, including tumor biopsies and robot-assisted surgeries done through tiny "keyhole" incisions.

The Duke team, which also includes Joanna Noble, an undergraduate student, and Matthew Fronheiser, a graduate student in Smith's laboratory, reported the findings in an issue of the journal Ultrasonic Imaging dated July 2006, but published in April 2007. The research was supported by the National Institutes of Health.

Human depth perception is largely the result of stereo vision -- the slightly different perspectives of the same scene that are observed by the left and right eyes, Smith said. The brain processes the information to produce a sense of depth, a phenomenon that can't be achieved when viewing a single, flat image.

Stereoscopic images solve that problem by taking two "snapshots" of the same object from slightly different angles, mimicking the normal difference between left and right eye views.

Special glasses or goggles can then be used to fuse the two images into one, gaining a 3-D effect. This principle lies behind 3-D movies and the familiar Fisher Price View-Master toy. With practice, some people can "defocus" their eyes and fuse the paired images without the aid of any special viewing device. (Find out how at http://en.wikipedia.org/wiki/Stereoscopy.)

To demonstrate the new capability, the researchers first generated stereo ultrasound images of a small metal cage. They then advanced to ultrasound images in living animals of a heart valve and blood vessels and needle biopsies of the animals' brains and esophagi.

The researchers have since recorded ultrasound images of a model human fetus that is traditionally used in the testing of fetal ultrasound imaging devices. (Watch the video, including paired images of both the cage and model fetus, at http://youtube.com/watch?v=4VSRlH01mzg. See if you can fuse them without goggles.)

"Thousands of 3-D ultrasound systems in clinics could be upgraded with such new software, and stereoscopic goggles could be issued to them as well," Smith said. "Keepsake DVDs of the fetal exam could also be viewed at home in 3-D stereo."

The goggles would soon become obsolete, he added. New monitors capable of fusing stereo 3-D images without them are now in development.

Kendall Morgan | EurekAlert!
Further information:
http://www.duke.edu
http://en.wikipedia.org/wiki/Stereoscopy
http://youtube.com/watch?v=4VSRlH01mzg

More articles from Information Technology:

nachricht NIST's antenna evaluation method could help boost 5G network capacity and cut costs
11.12.2018 | National Institute of Standards and Technology (NIST)

nachricht ETRI exchanged quantum information on daylight in a free-space quantum key distribution
10.12.2018 | National Research Council of Science & Technology

All articles from Information Technology >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Topological material switched off and on for the first time

Key advance for future topological transistors

Over the last decade, there has been much excitement about the discovery, recognised by the Nobel Prize in Physics only two years ago, that there are two types...

Im Focus: Researchers develop method to transfer entire 2D circuits to any smooth surface

What if a sensor sensing a thing could be part of the thing itself? Rice University engineers believe they have a two-dimensional solution to do just that.

Rice engineers led by materials scientists Pulickel Ajayan and Jun Lou have developed a method to make atom-flat sensors that seamlessly integrate with devices...

Im Focus: Three components on one chip

Scientists at the University of Stuttgart and the Karlsruhe Institute of Technology (KIT) succeed in important further development on the way to quantum Computers.

Quantum computers one day should be able to solve certain computing problems much faster than a classical computer. One of the most promising approaches is...

Im Focus: Substitute for rare earth metal oxides

New Project SNAPSTER: Novel luminescent materials by encapsulating phosphorescent metal clusters with organic liquid crystals

Nowadays energy conversion in lighting and optoelectronic devices requires the use of rare earth oxides.

Im Focus: A bit of a stretch... material that thickens as it's pulled

Scientists have discovered the first synthetic material that becomes thicker - at the molecular level - as it is stretched.

Researchers led by Dr Devesh Mistry from the University of Leeds discovered a new non-porous material that has unique and inherent "auxetic" stretching...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

New Plastics Economy Investor Forum - Meeting Point for Innovations

10.12.2018 | Event News

EGU 2019 meeting: Media registration now open

06.12.2018 | Event News

Expert Panel on the Future of HPC in Engineering

03.12.2018 | Event News

 
Latest News

Electronic evidence of non-Fermi liquid behaviors in an iron-based superconductor

11.12.2018 | Physics and Astronomy

Topological material switched off and on for the first time

11.12.2018 | Materials Sciences

NIST's antenna evaluation method could help boost 5G network capacity and cut costs

11.12.2018 | Information Technology

VideoLinks
Science & Research
Overview of more VideoLinks >>>