Articles tagged with Magnetic Resonance Imaging
A new MRI method measures iron content to monitor recovery from stroke-related damage and track neurodegeneration in the substantia nigra. Higher iron levels are associated with worse long-term outcomes and potential therapies may slow or stop degeneration.
Researchers found an early atrophy of amygdala and hippocampus in Alzheimer's patients at age 40, differing from normal aging process. Studying biomarkers revealed certain structures shrink before dementia appears.
Researchers at Delft University of Technology have created a quantum circuit that enables the detection of weak radio signals, which could revolutionize fields like radio astronomy and medicine. The breakthrough opens up possibilities for experiments that explore the interplay between quantum mechanics and gravity.
Boston University researchers created an open, ringlike structure that perfectly cancels out sounds while maintaining airflow, silencing nearly all noise from a loudspeaker. The acoustic metamaterial can be customized to fit various environments, including drones, fans, and MRI machines.
A study found that brain regions involved in emotional processing and controlling the body's unconscious workings do not communicate as well in patients with Takotsubo syndrome, a condition known as 'broken heart' syndrome. This decrease in communication may contribute to the development of TTS, which is triggered by emotional stressors.
A study using high-resolution MRI scans found that protein content in glioma tumors is associated with treatment response and patient survival. The research suggests that assessing tumor protein levels could help choose the best possible treatment strategy for patients.
Researchers at MIT have developed a way to measure oxygen levels of pancreatic islet cells over long periods, enabling them to predict which implants will be most effective in treating diabetes. This breakthrough could lead to better designs for artificial pancreas systems.
A recent study published in the Journal of Biomechanics used advanced MRI techniques to track wrist bone movement in 18 individuals, revealing gender-based differences. The researchers found that while individual left and right wrists are similar, there are distinct differences between male and female wrists.
A study from Duke Health researchers reveals that MRI cardiac stress testing can predict mortality and diagnose coronary artery disease more effectively than existing methods. The non-invasive technology has potential as an alternative to stress echocardiograms, catheterizations, and nuclear exams.
A novel experiment at PPPL has demonstrated the validity of magnetorotational instability (MRI) theory, which explains how stars and planets form from accretion disks. The study found that weakly tethered rotating balls gained angular momentum and shifted outward, consistent with MRI predictions.
Researchers found that combining iodine-123 metaiodobenzylguanidine (123I-MIBG) SPECT imaging with cardiac magnetic resonance imaging (MRI) helps identify specific subsets of heart tissue more prone to arrhythmias. This approach enables physicians to achieve improved VT suppression and shorter procedure times.
A systematic prospective study investigated the safety of MRI scans for individuals with tattoos. Researchers found that the risk of side effects is very small and that most participants did not experience any adverse reactions. The study's results provide valuable information on safety guidelines for research and clinical environments.
Researchers have developed an innovative 'elastic' contrast media that enhances MRI diagnostics without increasing contrast medium use. The new method utilizes a self-regulating protein structure that absorbs xenon to improve image quality, allowing for better detection of disease markers in low concentrations.
Holistic thinkers exhibited similar brain activity when watching a dramatic film, whereas analytical thinkers showed distinct responses. The study suggests that holistic thinkers perceive the world in a more integrated way, processing moral issues and factual connections similarly with each other.
Researchers have successfully combined magnetic resonance imaging (MRI) with proton beam cancer treatments, enabling targeted and healthy tissue-sparing therapy. The integration of real-time MR imaging with proton therapy aims to improve the precision and effectiveness of particle beam cancer treatments.
A new study found that repetitive subconcussive head impacts in youth football can alter the corpus callosum, a critical band of nerve fibers connecting the two halves of the brain. This change may lead to greater risk of cognitive and motor problems in these young athletes.
Researchers create compact system for fluorescence imaging at the tip of a fibre, enabling high-resolution images of brain cells and neuronal processes in deep brain areas. This breakthrough technology offers a minimally invasive approach to study sensory perception, memory formation, and severe neuronal diseases like Alzheimer's.
Researchers used AI to analyze imaging data from patients who underwent contrast-enhanced MRI exams and found that low-dose images yielded significant information, suggesting a potential method to reduce gadolinium dose. The study's findings demonstrate the algorithm's ability to approximate full-dose images without contrast agent use.
A study published in JAMA Pediatrics reveals that most Zika-exposed fetuses have normal brain development, contrary to initial fears. However, severe congenital brain abnormalities were detected in a small percentage of cases, highlighting the need for continued monitoring and research.
Researchers used diffusion tensor imaging to assess white matter health and found that individuals who went on to experience cognitive decline had significantly more signs of damage. The study predicted cognitive decline with 89% accuracy, rising to 95% when focusing on specific brain areas.
Researchers used MRI brain scans to predict Alzheimer's disease, achieving 89% accuracy in identifying patients at risk. The study found that diffusion tensor imaging (DTI) identified quantifiable differences in the brains of those who developed the disease.
A study found significant changes in grey matter structure and deep brain structures after a season of high school football, which may lead to long-term cognitive decline and neurological disorders. The researchers used MRI scans to examine brain microstructure and correlation with head impacts.
The new robotic system uses a thin probe inserted into the brain through a small hole drilled in the skull to deliver high-intensity ultrasound energy lethal to tumors while minimizing damage to surrounding brain tissue. Real-time MRI-based thermal imaging provides feedback on dose delivery, ensuring precise control and safety.
A team of researchers used real-time MRI to study how beatboxers produce percussion sounds, finding that they can create unique sounds not seen in any language. The study used video signal processing to demystify the mechanics of artistic style and characterized different beatboxing styles.
Researchers at Michigan Tech have developed a new approach to high-frequency MRI machines by using radio frequency probes inspired by microstrip patch antennas. These designs increase MRI resolution and provide uniform magnetic fields, leading to better images.
Purdue University researchers used an MRI to study the effects of vagus nerve stimulation on stomach complications, showing it can correct symptoms and speed up gastric emptying. The technique has potential for more precise treatment than existing methods, and further research is planned.
MIT engineers have created a new technique to detect electromagnetic signals in the brain using minimally invasive MRI sensors, enabling spatially accurate pinpointing of electrical activity. The sensors can also detect light produced by luminescent proteins, expanding their potential applications in neuroscience and beyond.
A new study using carotid artery MRI shows that measurements of wall thickness can improve cardiovascular disease risk assessment. The technique offers a more accurate predictor of cardiovascular events than ultrasound-based intima-media thickness (IMT) tests, especially for stroke risk.
A new study combines imaging and neuropsychological testing to more accurately assess cognitive status, distinguishing individuals with mild cognitive impairment from those with normal cognition. The combined data model achieved an overall accuracy of over 90%, surpassing individual models alone.
Researchers found that fans of rival teams see the same game in a visual sense, but interpret and evaluate sensory information differently. The study suggests that group bias may be linked to the brain's reward system and reflects an interaction between multiple brain regions.
A study published in Radiology found that minimally invasive autopsy with CT and MRI performs as well as conventional autopsy in detecting cause of death, yielding more diagnoses. The procedure provides a permanent record of the entire body that can be revisited and reanalyzed by pathologists, radiologists, clinicians, and next-of-kin.
Researchers developed a new MRI technique that analyzes overlooked data to reveal brain cell density and connectivity. This may aid in diagnosing brain conditions such as Alzheimer's disease, multiple sclerosis, traumatic brain injury, and autism.
Purdue University researchers have simulated how over 20 different breast tissue ratios respond to heat given off by MRIs at higher field strengths. The simulations showed that a fivefold increase in SAR could still stay within FDA limits for most breast tissue ratios, enabling the use of 7 tesla technology for safer cancer detection.
A study found that premature baby boys' brains are affected more severely than girls', with significant sex differences in gray matter and white matter. The research used MRI scans to analyze the brains of 33 infants, showing that even at one year old, there are major sex differences.
Researchers aim to develop and evaluate non-contrast based imaging methods to diagnose peripheral arterial disease without relying on gadolinium-based contrast agents. The proposed techniques have high applicability to other medical procedures, including venography and vessel wall imaging.
Researchers detected myelin loosening in concussed athletes two weeks after injury, even though they felt fine. This can slow signal transmission between brain cells and may lead to long-term damage.
Research found two brain areas associated with action control have varying volumes and connectivity in individuals with high versus low action control. Individuals with poor action control had a larger amygdala, while the dorsal anterior cingulate cortex (dorsal ACC) showed reduced functional connection to the amygdala.
Rice University scientists create iron-based TI contrast agent that outperforms gadolinium chelates, improving T1 MRI contrast performance by two-fold. The study demonstrates a method to load iron into nanoparticles, offering a safer and more effective alternative for radiologists.
Researchers created an MRI coil that produces images with three times higher resolution than standard coils, enabling easy whole-body imaging of mice. The new coil design uses inexpensive materials and manufacturing technology, reducing noise and improving image quality.
A new study published in the journal Radiology found that women soccer players exhibit more extensive changes to brain tissue after repetitive 'heading' of the soccer ball. Women showed lower fractional anisotropy values across a larger volume of brain tissue compared to men.
A new MRI technique monitors brain iron levels to identify MS patients at higher risk of developing physical disability. Iron depletion or increase in certain brain structures is associated with longer disease duration and higher disability degree.
Researchers found that brain anatomy is highly individualized, reflecting a combination of genetic and non-genetic influences. Over 90% accurate identification was achieved using MRI scans of nearly 200 healthy individuals.
A recent study found that increased fetal exposure to folic acid due to grain fortification is associated with altered postnatal brain development and psychiatric risk in youth. Cortical thickness on MRI scans revealed significant changes, highlighting the need for further research into micronutrient effects on brain development.
A team of researchers has developed a new method to measure and reconstruct interstitial fluid flow velocities in the brain. The technique reveals high variability in flow rates and magnitudes, contradicting the classical idea of a uniform flow rate. This discovery could potentially help predict tumor growth and improve cancer treatments.
Researchers found that elderly people who feel younger than their age show fewer signs of brain aging and have increased gray matter volume in key brain regions. This suggests that caring for brain health may be important for those who feel older than their age.
Researchers found that ultra-high-strength MRI releases high levels of mercury from amalgam fillings, but lower strength MRI does not cause significant leakage. The study suggests further research is needed to evaluate the relationship between high-field MRI and mercury release.
A study using high-resolution MRI found that domesticated rabbits have reduced amygdala size and enlarged medial prefrontal cortex compared to wild rabbits. This led to a diminished flight response and slower reaction time, as the brain's white matter structure was also compromised.
The Hong Kong University (HKU) team designed the world's first intra-operative MRI-guided robot for bilateral stereotactic neurosurgery. This innovation enables accurate and safe brain surgery, targeting tiny nucleus structures with minimal damage to surrounding tissue.
Researchers developed an algorithm that accelerates the registration of 3D medical images by learning from previous registrations, reducing processing time to minutes or seconds. The 'VoxelMorph' algorithm uses convolutional neural networks and achieves comparable accuracy to state-of-the-art systems.
A University of Washington study found that specialized tutoring can change brain connections and improve reading performance. After eight weeks, neural circuitry strengthened in struggling readers, leading to improved reading skills.
The adult ventricular septum plays a crucial role in both the right and left ventricles' performance. Advanced imaging techniques reveal its mechanical patterns, which may help predict adverse cardiovascular events.
Researchers developed a new method to convert complex medical images into physical models with unprecedented detail. This technique uses dithered bitmaps to simplify grayscale images, allowing for faster and more accurate printing.
Researchers developed an imaging technique that reveals tiny brain motions induced by blood pulsation and CSF flow, enabling better visualization of brain motion. This method promises a long-awaited diagnostic tool for obstructive brain disorders, such as Chiari malformation I.
Scientists have discovered a way to exploit defects in nanoscale diamonds to enhance the sensitivity of magnetic resonance imaging (MRI) and nuclear magnetic resonance (NMR) systems. The technique could lead to low-cost alternatives to multimillion-dollar medical imaging and drug-discovery devices.
Machine learning has detected small vessel disease, a common cause of stroke and dementia, in CT scans more accurately than current methods. The software can identify and measure the severity of SVD, enabling clinicians to administer better treatments and predict patients' likelihood of developing dementia.
Researchers found that cortical surface area, a measure of brain size, is associated with greater cognitive ability in taller individuals. However, the study also suggests that environmental factors, such as childhood malnutrition, may play a larger role in shaping cognitive development.
Research by Children's Hospital Los Angeles reveals that gadolinium deposition in the brain is associated with brain tumors and radiation treatment, rather than the amount of contrast agent administered. The study's findings challenge previous assumptions about the dose-dependent nature of gadolinium deposition.
A new MRI component in the shape of a glove delivers clear images of bones, tendons, and ligaments moving together for the first time. The technology has potential for diagnosing repetitive strain injuries and creating a more versatile atlas of hand anatomy.
Researchers have developed a new, non-invasive technique using magnetic resonance methods to detect internal defects and state of charge in rechargeable Lithium-ion batteries. This breakthrough could lead to faster diagnosis, reduced costs, and improved safety in the battery industry.
Researchers have developed next-generation contrast agents that can be turned off using ultrasound, allowing for clearer MRI scans. The new technology relies on nanoscale structures called gas vesicles, which bounce back sound waves and react differently to magnetic fields.