Images of prisoners' brains show important differences between those who are diagnosed as psychopaths and those who aren't, according to a new study led by University of Wisconsin-Madison researchers.
Nov 22, 2011
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Tattoos are increasingly popular. Every eighth person in Germany has already felt the sting of a tattoo needle. Yet, examining tattooed people via magnetic resonance imaging (MRI) could possibly be risky. The first prospective ...
Jan 31, 2019
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Lowering the cost of magnetic-resonance imaging (MRI) could revolutionize how doctors diagnose and screen for many diseases. In a study published in the journal Science Advances, a researcher at Massachusetts General Hospital ...
Jul 17, 2020
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Oxford University researchers have discovered that learned knowledge is stored in different brain circuits depending on how we acquire it.
Oct 25, 2019
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Interpersonal trust is a crucial component of healthy relationships. When we interact with strangers, we quickly gage whether we can trust them. And those important social skills may be shaped by our earliest relationship ...
Mar 10, 2022
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New research, published in PLOS Biology, shows that tears from women contain chemicals that block aggression in men. The study led by Shani Agron at the Weizmann Institute of Science, Israel, finds that sniffing tears leads ...
Dec 21, 2023
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A new artificial intelligence system called a semantic decoder can translate a person's brain activity—while listening to a story or silently imagining telling a story—into a continuous stream of text. The system developed ...
May 1, 2023
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For the first time, scientists at Carnegie Mellon University's Center for Cognitive Brain Imaging (CCBI) have used a new combination of neural imaging methods to discover exactly how the human brain adapts to injury. The ...
Jan 16, 2013
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(PhysOrg.com) -- A new study published in the Archives of General Psychiatry describes how the use of functional Magnetic Resonance Imagery, or fMRI, is able to detect and diagnose pedophilia with greater accuracy than current ...
Changes in a person's "normal" mental state after taking drugs, while meditating, during hypnosis or due to specific medical conditions have been a topic of study for several years now. Some of these mental changes, which ...
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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