Results 21 to 30 of about 2,651,897 (274)

Trigeminal nerve and pathologies in magnetic resonance imaging : a pictorial review [PDF]

open access: yes, 2018
A variety of conditions may affect the trigeminal nerve. Magnetic resonance imaging is the modality of choice when trigeminal nerve pathology is suspected, and this modality plays an essential role in detecting causes. This review illustrates some of the
Akgoz, Ayca   +5 more
core   +2 more sources

Intrinsic signal changes accompanying sensory stimulation: functional brain mapping with magnetic resonance imaging.

open access: yesProceedings of the National Academy of Sciences of the United States of America, 1992
We report that visual stimulation produces an easily detectable (5-20%) transient increase in the intensity of water proton magnetic resonance signals in human primary visual cortex in gradient echo images at 4-T magnetic-field strength.
S. Ogawa   +6 more
semanticscholar   +1 more source

Methodology of magnetic resonance imaging [PDF]

open access: yesQuarterly Reviews of Biophysics, 1987
AbstractA survey of magnetic resonance imaging techniques is presented. Emphasis is put on the basic types of measurement procedures rather than, discussing all variants proposed so far. The general experimental procedure consists of two phases, the preconditioning period and the image formation period.
openaire   +4 more sources

Embroidered Coils for Magnetic Resonance Sensors [PDF]

open access: yes, 2013
Magnetic resonance imaging is a widely used technique for medical and materials imaging. Even though the objects being imaged are often irregularly shaped, suitable coils permitting the measurement of the radio-frequency signal in these systems are ...
Blumich   +11 more
core   +2 more sources

The use of contrast-enhanced magnetic resonance imaging to identify reversible myocardial dysfunction.

open access: yesNew England Journal of Medicine, 2000
BACKGROUND Recent studies indicate that magnetic resonance imaging (MRI) after the administration of contrast material can be used to distinguish between reversible and irreversible myocardial ischemic injury regardless of the extent of wall motion or ...
R. Kim   +8 more
semanticscholar   +1 more source

Altered dynamic functional connectivity of auditory cortex and medial geniculate nucleus in first-episode, drug-naïve schizophrenia patients with and without auditory verbal hallucinations

open access: yesFrontiers in Psychiatry, 2022
Background and objectiveAs a key feature of schizophrenia, auditory verbal hallucination (AVH) is causing concern. Altered dynamic functional connectivity (dFC) patterns involving in auditory related regions were rarely reported in schizophrenia patients
Kangkang Xue   +8 more
doaj   +1 more source

Speckle filtering techniques for different quality level of healthy kidney ultrasound images [PDF]

open access: yes, 2019
The increasing reliance of modern medicine on diagnostic techniques such as computerized tomography, histopathology, magnetic resonance imaging, radiology and ultrasound imaging shows the importance of medical images [1].
Nazari, Ain   +2 more
core   +1 more source

Cardiovascular magnetic resonance imaging

open access: yesMedicine, 2010
MRI (magnetic resonance imaging) uses the magnetic properties of the hydrogen nucleus, radio waves and powerful magnets to provide high-quality still and cine images of the cardiovascular system, with and without the use of exogenous contrast (gadolinium).
Karamitsos, T, Neubauer, S
openaire   +4 more sources

Neuroprotective Effect of Low-Intensity Transcranial Ultrasound Stimulation in Moderate Traumatic Brain Injury Rats

open access: yesFrontiers in Neuroscience, 2020
Traumatic brain injury (TBI) is a kind of severe brain injury characterized with a high incidence rate and a high disability rate. Low-intensity transcranial ultrasound stimulation (LITUS) is a promising neuroprotective method for improving the ...
Tao Zheng   +9 more
doaj   +1 more source

Accelerated Brain Aging in Patients With Obsessive-Compulsive Disorder

open access: yesFrontiers in Psychiatry, 2022
Obsessive-compulsive disorder (OCD) may be accompanied by an accelerated structural decline of the brain with age compared to healthy controls (HCs); however, this has yet to be proven. To answer this question, we built a brain age prediction model using
Liang Liu   +8 more
doaj   +1 more source

Home - About - Disclaimer - Privacy