In a first-ever study, orgasmic meditation, a unique spiritual practice that uses stimulation of a woman's clitoris as its focus, has been found to produce a distinctive pattern of brain function, according to a study published ...
Nov 11, 2021
0
138
(HealthDay)—Patients with migraine without prior clinical care have reduced gray matter volume (GMV) in the right dorsal medial prefrontal cortex (dMPFC) compared to those with prior care, according to a study published ...
Nov 10, 2021
0
5
Using cutting-edge genetic engineering, UZH researchers have developed a model to study hereditary kidney disease with the help of tropical frogs. The method allows them to collect large amounts of data on anomalies, which ...
Nov 05, 2021
0
2
(HealthDay)—Point-of-care (POC) intestinal ultrasound (IUS) affects clinical decision-making in inflammatory bowel disease (IBD) and could reduce the need for endoscopy or magnetic resonance imaging (MRI), according to ...
Oct 29, 2021
0
2
(HealthDay)—Three factors are associated with an increased risk for onset of clinical symptoms of multiple sclerosis (MS) among individuals with radiologically isolated syndrome (RIS), according to a study published online ...
Oct 18, 2021
0
4
Stressful experiences are usually remembered more easily than neutral experiences. Researchers at Ruhr-Universität Bochum (RUB) have analyzed the reasons why this is the case. They put people in stressful situations during ...
Oct 15, 2021
0
0
A research team at Georgia State University has identified how the brain changes when artists are in a state of "flow" and found that simply imagining improvised performances elicits the same flow-like brain states as when ...
Oct 15, 2021
0
337
It remains a central challenge in psychiatry to reliably judge whether a patient will respond to treatment. In a new study published in the journal Biological Psychiatry, researchers from Karolinska Institutet in Sweden and ...
Oct 14, 2021
0
17
Neuroscientists at Technische Universität Dresden discovered a novel, non-invasive imaging-based method to investigate the visual sensory thalamus, an important structure of the human brain and point of origin of visual ...
Oct 08, 2021
0
3
Individuals who are diagnosed with high blood pressure at ages 35-44 had smaller brain size and were more likely to develop dementia compared to people who had normal blood pressure, according to new research published today ...
Oct 04, 2021
0
22
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.
This text uses material from Wikipedia, licensed under CC BY-SA
