A method that transmits new and more advanced ultrasound signals is being tested in Trondheim. The chances of discovering and diagnosing tumors in the prostate and breast will improve significantly.
- The first clinical testing has been done, and the results so far are promising, says Rune Hansen. He is a researcher at Norwegian University of Science and Technology (NTNU) and at SINTEF Health Research.
A veil of noise
The ultrasound images that are processed using current methods are often strongly hampered by a kind of noise that originates from sound signals that move back and forth between reflectors that are dissimilar in strength. This is called ‘multiple echo’ or ‘reverberations’ in technical terms. This is particularly a problem when the signal is being sent through the ‘body wall’ in order to image internal organs in the body.
The sound signals will ricochet back and forth between layers of fat, muscles and connective tissue in the body wall, and this results in misty ultrasound images.
The new method that is being processed is far more detailed, and it will be possible to separate details in parts of the body such as the liver, prostate and breast. This makes it easier to discover changes in body tissue, and he chance of discovering cancer tumors at an early stage will increase significantly.
In addition to giving a more detailed images of body tissue, the new ultrasound method is also much better at discovering and reading contrast agents. Such liquid is given intravenously and this makes perfusion imaging possible in organs that are suspected being cancerous.
- Tumors generate their own veins in order to obtain sufficient oxygen and nutrients so they are able to grow. This method has the potential to discover these changes in micro circulation much earlier than at present, says RuneHansen.
Three forms of cancer where the new method will make it possible to discover cancers at an earlier stage are prostate, breast and thyroid gland cancers. Another area of application is diagnoses of cardiovascular diseases like heart diseases and plaque/stenoses/anurism in large arteries.
Transmission in two signals
The newly developed method has been given the name ‘SURF imaging’ – Second order UltRasound Field imaging.
When one applyes the traditional method, an imaging pulse is inserted, and the subsequent ‘echo’ that is heard is the basis of the ultrasound image. The important new factor is that the imaging pulse is accompanied by another signal.
Rune Hansen is a part of a team under Professor Bjørn Angelsen, who is one of the pioneers in ultrasound research in Trondheim. Professor Angelsen assumes that the method will be ready for normal use on the first patients in about a year’s time.
By Tore Oksholen/Gemini
Nina Tveter | alfa
Non-invasive view into the heart
24.06.2019 | Goethe-Universität Frankfurt am Main
New imaging modality targets cholesterol in arterial plaque
14.06.2019 | SPIE--International Society for Optics and Photonics
From June 25th to 27th 2019, the Fraunhofer Institute for Digital Media Technology IDMT in Ilmenau (Germany) will be presenting a new solution for acoustic quality inspection allowing contact-free, non-destructive testing of manufactured parts and components. The method which has reached Technology Readiness Level 6 already, is currently being successfully tested in practical use together with a number of industrial partners.
Reducing machine downtime, manufacturing defects, and excessive scrap
The quality of additively manufactured components depends not only on the manufacturing process, but also on the inline process control. The process control ensures a reliable coating process because it detects deviations from the target geometry immediately. At LASER World of PHOTONICS 2019, the Fraunhofer Institute for Laser Technology ILT will be demonstrating how well bi-directional sensor technology can already be used for Laser Material Deposition (LMD) in combination with commercial optics at booth A2.431.
Fraunhofer ILT has been developing optical sensor technology specifically for production measurement technology for around 10 years. In particular, its »bd-1«...
The well-known representation of chemical elements is just one example of how objects can be arranged and classified
The periodic table of elements that most chemistry books depict is only one special case. This tabular overview of the chemical elements, which goes back to...
Light can be used not only to measure materials’ properties, but also to change them. Especially interesting are those cases in which the function of a material can be modified, such as its ability to conduct electricity or to store information in its magnetic state. A team led by Andrea Cavalleri from the Max Planck Institute for the Structure and Dynamics of Matter in Hamburg used terahertz frequency light pulses to transform a non-ferroelectric material into a ferroelectric one.
Ferroelectricity is a state in which the constituent lattice “looks” in one specific direction, forming a macroscopic electrical polarisation. The ability to...
Researchers at TU Graz calculate the most accurate gravity field determination of the Earth using 1.16 billion satellite measurements. This yields valuable knowledge for climate research.
The Earth’s gravity fluctuates from place to place. Geodesists use this phenomenon to observe geodynamic and climatological processes. Using...
29.04.2019 | Event News
17.04.2019 | Event News
15.04.2019 | Event News
24.06.2019 | Agricultural and Forestry Science
24.06.2019 | Life Sciences
24.06.2019 | Medical Engineering