Physicists at the University of Regensburg have found a way to manipulate the quantum state of individual electrons using a microscope with atomic resolution. The results of the study have now been published in the journal ...
General Physics
Dec 6, 2023
1
120
As demand rises for increased data storage and faster-performing computers, researchers are creating a new generation of materials to meet consumers' expectations.
Condensed Matter
Nov 21, 2023
0
109
Quantum physicists at Delft University of Technology have shown that it's possible to control and manipulate spin waves on a chip using superconductors for the first time. These tiny waves in magnets may offer an alternative ...
Superconductivity
Oct 26, 2023
0
877
A study on canine brain networks reveals that during mammalian brain evolution, the role of the cingulate cortex, a bilateral structure located deep in the cerebral cortex, was partly taken over by the lateral frontal lobes, ...
Evolution
May 26, 2023
0
267
An after-hours trip to Aarhus University Hospital Skejby's radiology department has shed light on a mysterious and ancient fish, one that remains one of the world's rarest—the Coelacanth. Researchers from the University ...
Biotechnology
Aug 24, 2022
0
73
Walking past a corner bakery, you may find yourself drawn in by the fresh smell of sweets wafting from the front door. You're not alone: The knowledge that humans make decisions based on their nose has led major brands like ...
Evolution
Aug 26, 2021
0
989
Scanners applied in research use not just one antenna that emits and receives the signal, but several of them, which can cause severe burns to inner tissues and organs. Thus, researchers are forced to power scanners with ...
General Physics
Jan 25, 2021
0
11
A team of researchers from Delft University of Technology (TU Delft), Leiden University, Tohoku University and the Max Planck Institute for the Structure and Dynamics of Matter has developed a new type of MRI scanner that ...
General Physics
Nov 13, 2020
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4448
An international research team has uncoupled the mystery of how Tuvan throat singers produce distinctive sounds in which you can hear two different pitches at once—a low rumble and a high whistle-like tone.
Other
Mar 10, 2020
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280
A team led by Professor Sylvain Martel at the Polytechnique Montréal Nanorobotics Laboratory has developed a novel approach to tackling one of the biggest challenges of endovascular surgery: how to reach the most difficult-to-access ...
Bio & Medicine
Dec 3, 2019
0
320
Magnetic Resonance Imaging (MRI), or nuclear magnetic resonance imaging (NMRI), is primarily a medical imaging technique most commonly used in radiology to visualize the internal structure and function of the body. MRI provides much greater contrast between the different soft tissues of the body than computed tomography (CT) does, making it especially useful in neurological (brain), musculoskeletal, cardiovascular, and oncological (cancer) imaging. Unlike CT, it uses no ionizing radiation, but uses a powerful magnetic field to align the nuclear magnetization of (usually) hydrogen atoms in water in the body. Radio frequency (RF) fields are used to systematically alter the alignment of this magnetization, causing the hydrogen nuclei to produce a rotating magnetic field detectable by the scanner. This signal can be manipulated by additional magnetic fields to build up enough information to construct an image of the body.:36
Magnetic Resonance Imaging is a relatively new technology. The first MR image was published in 1973 and the first cross-sectional image of a living mouse was published in January 1974. The first studies performed on humans were published in 1977. By comparison, the first human X-ray image was taken in 1895.
Magnetic Resonance Imaging was developed from knowledge gained in the study of nuclear magnetic resonance. In its early years the technique was referred to as nuclear magnetic resonance imaging (NMRI). However, as the word nuclear was associated in the public mind with ionizing radiation exposure it is generally now referred to simply as MRI. Scientists still use the term NMRI when discussing non-medical devices operating on the same principles. The term Magnetic Resonance Tomography (MRT) is also sometimes used.
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