Don't move a muscle! Patients certainly have to take this request to heart if they have to lie in a magnetic resonance tomography (MRT) device – otherwise movement artefacts result on the images produced by the MRT.
These are distorting elements in the image which show the movement of the body, but not the body itself. Movement is a disturbing factor which leads to blurring and "ghosting" in the MRT image. Patients, however, have to have not only a lot of patience but also endurance, as a magnetic resonance imaging (MRI) test can take up to 30 minutes. But even if the patient does not move once during the whole time, movement artefacts cannot be ruled out.
Some parts of the body are always moving – for example the lungs expand when you breathe in and the chest goes up and down. The movement of the heart muscle also leads to distortions in the image – as it changes shape during the pumping cycle. With the aid of an ultra-broadband radar device, these vital movements during measurement can be taken into consideration and the MRI measurements can be corrected.
The joint use of both technologies is being tested with the aid of a prototype developed at the Physikalisch Technische Bundesanstalt (PTB, Germany's national metrology institute), which arose in co-operation with Ilmenau University of Technology. This project is funded by the Deutsche Forschungsgemeinschaft (DFG, the German Research Foundation) in the frame of a priority programme running for six years.The interdisciplinary research project ultraMEDIS within the DFG priority programme 1202 "Ultra wide-band radio technologies for communication, localisation and sensor technology" is aimed at using ultra-wideband (UWB) radar techniques for the detection of tumours, as well as for navigation technology in magnetic resonance (MR) imaging.
The high temporal and spatial resolution of radar sensors, their compatibility to existing narrow-band systems, the low integral power of the probing signals and their ability to penetrate objects are thereby exploited. Especially the latter one is the very property which makes UWB radar so attractive for medical applications.
The Project is carried out in cooperation with the Technical University of Ilmenau and with medical partners from University of Jena, whose special attention lies on tumor detection.
Imke Frischmuth | alfa
XXL computed tomography: a new dimension in X-ray analysis
17.05.2018 | Fraunhofer-Gesellschaft
Why we need erasable MRI scans
26.04.2018 | California Institute of Technology
So-called quantum many-body scars allow quantum systems to stay out of equilibrium much longer, explaining experiment | Study published in Nature Physics
Recently, researchers from Harvard and MIT succeeded in trapping a record 53 atoms and individually controlling their quantum state, realizing what is called a...
The historic first detection of gravitational waves from colliding black holes far outside our galaxy opened a new window to understanding the universe. A...
A team led by Austrian experimental physicist Rainer Blatt has succeeded in characterizing the quantum entanglement of two spatially separated atoms by observing their light emission. This fundamental demonstration could lead to the development of highly sensitive optical gradiometers for the precise measurement of the gravitational field or the earth's magnetic field.
The age of quantum technology has long been heralded. Decades of research into the quantum world have led to the development of methods that make it possible...
Cardiovascular tissue engineering aims to treat heart disease with prostheses that grow and regenerate. Now, researchers from the University of Zurich, the Technical University Eindhoven and the Charité Berlin have successfully implanted regenerative heart valves, designed with the aid of computer simulations, into sheep for the first time.
Producing living tissue or organs based on human cells is one of the main research fields in regenerative medicine. Tissue engineering, which involves growing...
A team of scientists of the Max Planck Institute for the Structure and Dynamics of Matter (MPSD) at the Center for Free-Electron Laser Science in Hamburg investigated optically-induced superconductivity in the alkali-doped fulleride K3C60under high external pressures. This study allowed, on one hand, to uniquely assess the nature of the transient state as a superconducting phase. In addition, it unveiled the possibility to induce superconductivity in K3C60 at temperatures far above the -170 degrees Celsius hypothesized previously, and rather all the way to room temperature. The paper by Cantaluppi et al has been published in Nature Physics.
Unlike ordinary metals, superconductors have the unique capability of transporting electrical currents without any loss. Nowadays, their technological...
02.05.2018 | Event News
13.04.2018 | Event News
12.04.2018 | Event News
18.05.2018 | Power and Electrical Engineering
18.05.2018 | Information Technology
18.05.2018 | Information Technology