Articles tagged with Magnetic Resonance Imaging
Researchers from PTB and international partners have created superconducting sensors to detect the magnetic moments of helium-3 atoms with extreme sensitivity. This has allowed them to investigate the unique quantum liquid of helium-3 in detail, enabling the detection and investigation of excitations that behave like Majorana fermions.
A new study found that metal-on-metal hip implants can cause inflammation of the joint lining (synovitis) in asymptomatic patients, with MRI scans identifying this inflammation. The study suggests that symptoms alone are insufficient to determine an implant's health and recommends using imaging, such as MRI, to predict potential damage.
A large-scale study found that minimally invasive MRI autopsies accurately determined the cause of death for 92% of fetuses and babies younger than one year. However, accuracy decreased for children aged 1-16 years, with only half of cases agreeing on cause of death. The study suggests that MRI may not detect infections in this age group.
Researchers have developed a new dye that surpasses current contrast agents in terms of image quality and duration, opening up possibilities for live-cell filming and reduced costs. The breakthrough could lead to expanded use of imaging technology in developing countries, where access to medical equipment is limited.
Researchers at NYU have created a novel way to enhance MRI by reducing interference from large macromolecules that can obscure images. This method has the potential to improve MRI for cartilage as well as brain tissue, allowing for more accurate diagnoses.
A new study found that MRI atrophy in the thalamus is a strong predictor of multiple sclerosis (MS) development and progression. Thalamic atrophy was associated with increased risk of conversion to clinically definite MS, outperforming traditional methods for evaluating patients at risk.
Recent studies have shown that image-guided brachytherapy can deliver high doses of radiotherapy to tumours while sparing surrounding organs, leading to effective treatment with fewer side-effects. The studies also found a clear dose response relationship between radiation dose and vaginal morbidity.
A new study shows that dual energy CT is an effective way to evaluate emergency department patients with possible ACL tears. The imaging technique accurately identified ACL tears in 94% of cases, making it a promising alternative to MRI.
Researchers used MRI to measure endothelial sheer stress (ESS) in atherosclerotic plaques, identifying high-risk plaques prone to disruption. The study found that low ESS was associated with unstable plaques, highlighting the importance of hemodynamics in atherosclerosis progression.
A new study found that neuroimaging data can predict the likelihood of reoffending following prison release. Inmates with lower anterior cingulate cortex activity were twice as likely to reoffend compared to those with higher activity.
Research suggests that migraines are related to brain abnormalities present at birth and others that develop over time. Cortical thickness and surface area abnormalities were found in regions related to pain processing, with minimal overlap between the two types of abnormalities.
A Canadian study found that more than half of lower-back MRIs ordered at two hospitals were either inappropriate or of questionable value for patients. Family doctors were more likely to order these tests compared to specialists, highlighting the need for better education on when to use MRI scans.
Researchers have found that atrophy of the thalamus is a key predictor of clinically definite multiple sclerosis (MS) in patients. Thalamic atrophy can help identify patients at risk for developing MS, allowing clinicians to diagnose earlier and monitor disease progression.
A new study found that MRI is highly sensitive and specific for identifying tissue damage in metal-on-metal hip replacement patients. Early detection allows for timely revision surgery, decreasing the risk of further tissue damage and pain.
Researchers at Case Western Reserve University developed a new MRI method that can differentiate white matter from gray matter in the brain in about 12 seconds. The technology uses unique fingerprinting to identify tissues and diseases, promising faster and cheaper scans with more accurate diagnoses.
Heavy drinkers show greater and faster acetate uptake and metabolism in the brain compared to light drinkers. Acetate can serve as an alternative energy source, potentially alleviating withdrawal symptoms during detoxification.
Researchers at UTHealth found CCSVI occurs at a low rate in people with multiple sclerosis and non-MS volunteers. The study suggests CCSVI is unlikely to be the cause of MS or contribute to disease worsening.
A new study led by Johns Hopkins Medicine researchers has developed a simple bedside test that can determine whether severe dizziness is caused by a stroke or something benign. The portable device uses eye movement tests to diagnose strokes with 100% accuracy, promising to prevent misdiagnosis and save lives.
Researchers have developed a new focal laser ablation treatment that uses precisely targeted heat to burn away cancerous cells in the prostate. The approach has shown promising safety results and can be performed without significant side effects.
A $3 million NIH grant will fund a two-year study investigating the short and long-term consequences of soccer heading on the brain. The researchers, led by Dr. Michael Lipton, will assess the relationship between heading frequency and structural and cognitive measures using advanced MRI technology and cognitive tests.
Researchers create nanoscale MRI using tiny defects in diamonds, enabling detailed visualization of molecules. The technology could revolutionize diagnoses by examining damage on DNA strands or identifying cancer cells with unprecedented resolution.
Researchers at ICFO developed a technique to scan individual cells using artificial atoms, which can detect weak magnetic fields generated by biological molecules. This breakthrough enables non-invasive diagnosis and better understanding of intracellular processes.
A study published in Neurosurgery found that subcortical damage during awake craniotomy for brain tumor surgery can lead to worsening neurological deficits. The researchers analyzed data from 241 patients and found that 36 developed new neurological abnormalities while the surgeon was operating in the subcortex.
Scientists at Johns Hopkins Medicine have created a way to monitor the survival of transplanted cells using nanoscale pH sensors and MRI machines. This innovation has the potential to revolutionize cell replacement therapies for conditions like liver failure and type 1 diabetes by providing reliable means of detecting dead cells.
A new biometric approach using kneecap scans could identify individuals with accuracy of up to 93%. This method avoids health risks and privacy issues associated with other biometrics.
Researchers at OHSU Doernbecher Children's Hospital report that low blood flow to the premature brain does not cause irreversible loss of brain cells, but rather disrupts their ability to mature. This discovery opens up new avenues for potential therapies to promote regeneration and repair of the premature brain.
Researchers at the University of Pennsylvania developed a non-invasive MRI-based algorithm to screen patients for Alzheimer's disease or frontotemporal lobar degeneration. The method, published in Neurology, accurately differentiated cases 75 percent of the time and showed comparable accuracy to lumbar puncture tests.
Researchers developed a new MRI method to predict the ratio of tau and beta-amyloid proteins in cerebrospinal fluid, achieving 75% accuracy in identifying correct diagnoses. The method could be used as a screening tool and help monitor biomarkers over time in clinical trials.
Researchers at Johns Hopkins Medicine have developed a new way of analyzing standard MRI scans to accurately measure blood-brain barrier damage in stroke victims. This could lead to better treatment outcomes and reduced risk of complications from clot-dissolving drugs, known as tPA.
Researchers at Duke University Medical Center found that combining diagnostic tests more accurately predicts Alzheimer's in patients with mild cognitive impairment. The combination of MRI, FDG-PET, and cerebrospinal fluid analysis reduced misdiagnoses by 28.4% compared to individual tests.
A combination of diagnostic tests, including MRI, PET and cerebrospinal fluid biomarkers, can improve the prediction of conversion from mild cognitive impairment to Alzheimer's disease. The study found that combining these tests reduced false classifications and increased accuracy compared to clinical testing alone.
A new imaging-guided targeted biopsy method using MRI and ultrasound fusion has been shown to detect prostate cancer more accurately than traditional blind biopsies. The technique led to a high rate of cancer detection and identification of aggressive tumors, improving patient outcomes.
Researchers have found that mountain climbers who develop a severe form of high-altitude cerebral edema (HACE) are at risk for microbleeds in the brain years after their initial incident. The condition can cause swelling of brain tissue due to fluid leakage from capillaries, leading to symptoms like headaches and loss of coordination.
Researchers have developed omni-tomography, a technology that integrates multiple imaging modalities to improve early disease screening, cancer staging, and therapeutic assessment. This approach enables precise reconstruction of small areas in the body using prior knowledge and common properties.
A new MRI technique has provided the first clinical evidence for the theory that Parkinson's neurodegeneration begins deep in the brain and advances upward. The study found significant loss of volume in the substantia nigra early on, followed by loss of basal forebrain volume later in the disease.
Researchers used MRI to image patients with mild traumatic brain injury and found that some brains compensate for damage by changing water flow patterns. This compensation is associated with fewer post-concussion symptoms and higher functioning, suggesting a potential new approach to treating traumatic brain injury.
A new study reveals that fetal alcohol exposure alters brain structure and metabolism in children, with MRI techniques showing statistically significant thinning of the corpus callosum. Diffusion weighted imaging also detected increased diffusion, indicative of neurological disorders or brain damage.
A new study found that frequent cognitive activity in late life is associated with higher diffusion anisotropy values in the brain, indicating better microstructural integrity. The research suggests that keeping the brain occupied can have positive outcomes and may help maintain brain health in older adults.
Researchers have identified a key biochemical marker for cognitive impairment in MS brains and developed an experimental compound to manipulate it, improving learning and memory in mice. The finding has the potential to speed development of new drugs for treating cognitive impairment in MS patients and those with Alzheimer's disease.
Bochum clinicians successfully performed MRI scans on 326 children without sedation, achieving a 97% diagnostic relevance rate. The BLADE technique was used to minimize blurring and maximize image quality, allowing for successful examinations in 41% of three-year-olds, 91% of four-year-olds, and 98% of patients over five years old.
The University of Oklahoma has received nearly $2 million in National Science Foundation grants to enhance its research capabilities in meteorology, high energy physics, and bioengineering. The grants will enable OU faculty and students to conduct cutting-edge research with state-of-the-art equipment.
A nine-year follow-up study found that women with migraines did not exhibit declining cognitive abilities, unlike previous research suggesting a link between migraine and impaired cognition. Brain changes associated with bright spots on MRI scans were present in both men and women with migraines.
A new MRI model reveals why images are sensitive to nerve fiber direction and allows for detailed information about fiber size and direction. This discovery will help clinicians recognize lesions and tailor scans to patients with specific needs.
A new study presented at TCT 2012 confirms that intracoronary and intravenous use of abciximab during angioplasty yield similar results for heart damage and reperfusion injury in STEMI patients. The AIDA STEMI MRI sub-study examined various measures of heart damage using cardiac magnetic resonance imaging.
A European team has completed the first micro-structure atlas of the human brain, utilizing advanced MRI technology. The atlas provides unprecedented detail and accuracy, revealing new information about brain structure that helps understand how cellular architecture relates to thought processes.
Researchers at Oregon Health & Science University have demonstrated that banked human neural stem cells can survive and make functional myelin in mice with severe symptoms of myelin loss. The study provides proof of principle for treating a wide variety of disorders that affect myelin, including cerebral palsy and multiple sclerosis.
A new MRI technique has shown promise in identifying early-stage coronary disease, which can be treated with lifestyle changes and medications. The study used time-resolved multi-frame acquisition to measure coronary artery wall thickness with a high success rate and precise measurements.
A novel MRI technique using diffusion-weighted imaging (DWI) successfully characterizes 46% of non-malignant breast lesions as benign, reducing false-positive findings and preventable biopsies. DWI differentiates high-risk lesions requiring additional workup from other non-malignant subtypes.
Researchers have developed a noninvasive method to measure interstitial fluid pressure in tumors, which may help identify aggressive tumors. The technique uses dynamic contrast-enhanced MRI to evaluate the velocity of fluid flow from tumors and has been shown to correlate with tumor aggressiveness.
A set of evidence-based clinical practice guidelines has been established to guide the diagnosis and treatment of low-back pain in the US. The guidelines recommend careful observation, over-the-counter pain medication, and targeted physical activity for most patients, while reserving imaging and surgery for specific cases with red flags.
Researchers developed positively charged nanoparticles that efficiently transduce into islet cells, enabling accurate monitoring via MRI. The study suggests these nanoparticles could be useful for evaluating graft survival and monitoring therapeutic interventions in islet transplantation.
A new study in The Journal of Urology presents promising results on the use of MRI to assess eligibility for active surveillance in men with clinically low risk prostate cancer. The findings suggest that clear tumor visualization on MRI is predictive of disease status upgrades on confirmatory biopsy, highlighting the potential of MRI t...
A study using cardiac magnetic resonance imaging in Iceland found that unrecognized heart attacks (UMI) were associated with an increased risk of death. The prevalence of UMI was higher than previously suspected, especially among individuals with diabetes.
A study by BUSM researchers reveals that approximately 90 percent of knees with no signs of osteoarthritis using X-ray showed clear signs of osteoarthritis using MRI. The findings suggest that MRI is not a useful diagnostic test for knee pain in this age group.
Standard head movements during MRI scanner exposure temporarily lower concentration and visuospatial awareness, particularly in tasks requiring high working memory. This may have implications for surgeons and other healthcare staff.
A team of researchers at UC San Diego developed a multi-dimensional set of brain measurements that can accurately assess a child's age. The study, published in Current Biology, shows that the 'developmental clock' within the brain captures age differences well regardless of individual variability.
Researchers at Vanderbilt University have created a new 3D view of the body's response to infection, enabling the identification of proteins involved in the inflammatory response. The technology combines magnetic resonance imaging (MRI) and imaging mass spectrometry to visualize the immune system's response to bacterial infections.
Researchers at Aalto University developed a device that merges MEG and MRI technology to produce unprecedented accuracy in locating brain electrical activity non-invasively. This innovation improves the diagnosis of cancer patients and enhances brain mapping for epilepsy cases.
Researchers used piglets in mazes to study human cognitive development, finding that environmental insults can affect brain structure and function. The piglet model allows for the testing of learning and memory tasks, providing insights into how stressors impact brain development.
A new study published in Radiology found that sodium accumulation in the brain correlates directly with disability in multiple sclerosis patients. The research used 3 Tesla sodium MRI to detect abnormal sodium concentrations in specific brain regions and throughout the whole brain.