Articles tagged with Magnetic Resonance Imaging
Physicists at Johannes Gutenberg University Mainz have measured the proton's magnetic moment to ten decimal places, setting a new record and confirming the Standard Model of particle physics. The results show a strong similarity between protons and antiprotons, supporting the CPT symmetry.
A new study used MRI imaging technology to plot diverse changes in body organ fat storage pools during 18 months of Mediterranean/low-carb and low-fat diets, with and without moderate physical exercise. The results showed that even with modest weight loss, the Med/LC diet was significantly superior to a low-fat diet in reducing some fa...
Researchers use terahertz scanning and advanced signal processing to analyze paintings from the 17th century, uncovering previously unknown details such as restorations and varnish layers. The technique has potential applications beyond art conservation, including detecting skin cancer and measuring paint thickness.
A recent study using MRI has uncovered a common pattern of structural abnormalities in the brains of people with depression and social anxiety. The research found that both conditions share similar clinical symptoms, suggesting they may have similar brain mechanisms. Cortical thickening in certain regions was observed in patients with ...
Researchers at Massachusetts General Hospital have developed a potential alternative to gadolinium-based contrast agents for magnetic resonance imaging (MRI). The new manganese-based agent Mn-PyC3A produced comparable image enhancement to the standard of care with rapid clearance and less likelihood of toxicity. The study used a baboon...
Self-reporting theranostic nanoparticles can provide real-time disease monitoring and tracking. The emerging field of responsive theranostic nanoparticles has the potential to advance imaging platforms and improve disease diagnosis.
Bone marrow edema was most frequent in posterior lower ilium and anterior upper sacrum in young athletes. A better understanding of this condition may improve evaluation of magnetic resonance imaging in individuals with early axial spondyloarthritis.
A study found that positive sacroiliac MRI scans can be common in healthy individuals and frequent runners, suggesting the need for additional diagnostic measures. The research emphasizes the importance of considering these results in context to avoid misdiagnosis of axial spondyloarthritis.
A study found that magnetic resonance imaging (MRI) scans of healthy military recruits showed sacroiliac joint damage similar to axial spondyloarthritis after six weeks of intensive physical training. The high prevalence of lesions at baseline and the increase in lesions after training were striking results.
A study of women with a 20% or greater lifetime risk of breast cancer found that only 23% underwent MRI screenings, even when the service was available at no cost. Researchers aim to understand why these women are declining screening, which could inform targeted interventions.
Researchers have found that young hockey players who suffered concussions may still exhibit white matter changes in the brain months after being cleared to return to play. Advanced MRI techniques revealed prolonged abnormalities in terms of brain structure and function, suggesting potential long-term consequences.
A new study finds that continuously recording aEEG data provides more accurate predictions of outcomes for infants undergoing cooling therapy. Infants with persistent abnormal patterns are at increased risk of adverse outcomes, highlighting the importance of continuous monitoring.
A recent study published in Neurology found that young hockey players who experienced concussions may still have brain changes three months later. The study showed widespread damage to the white matter of the brain and a 10% reduction in metabolic molecules, highlighting the need for further research into concussion recovery.
A recent study from Georgia Institute of Technology suggests that daydreaming during meetings or at work might not be as bad as thought. Participants with more efficient brains scored higher on intellectual and creative ability tests.
Researchers developed a novel imaging technique to assess patients with lumbar spine degeneration, providing precise assessments of water content changes in the intervertebral disk. This technology aims to recognize and predict disease earlier, enabling better treatment choices.
A study published in Scientific Reports found that city dwellers living close to a forest showed healthier amygdala structures, suggesting better stress coping mechanisms. However, the association with urban green or wasteland was not confirmed.
A new study at Yale University identified changes in the brain associated with multiple sclerosis (MS) using MRI scans in children. The researchers found that approximately 42% of children with abnormal MRI findings developed clinical MS symptoms within two years, highlighting the importance of closer follow-up for this high-risk group.
A longitudinal neuroimaging study found that fetal MRI can detect brain damage caused by Zika exposure in utero more effectively than standard ultrasound. The study revealed three pregnancies with abnormal fetal MRIs showing extensive areas of brain damage, which were not detected by ultrasound.
High-risk newborns with congenital heart disease (CHD) exhibit reduced functional connectivity between key brain regions even before undergoing corrective open heart surgery. Global network organization remains intact, but small world networks show remarkable ability to withstand early-life brain injury.
A new study by Intermountain Medical Center Heart Institute found that MRIs can be safely performed on patients with cardiac implantable electronic devices. The study evaluated 212 MRI studies in 178 patients and did not find any problems requiring remediation.
A study by UT Southwestern Medical Center found that clinicians' prior image-ordering habits and equipment ownership are strong indicators of unnecessary MRI orders. This highlights the need for physicians to offer financially responsible care, particularly in cases of uncomplicated back pain and headaches.
Researchers at ETH Zurich developed a new technique using magnetic resonance imaging to study granular systems, enabling real-time imaging and measurement of particle velocities. This breakthrough has potential applications in fields such as carbon capture and could lead to higher efficiency and energy savings.
A recent study published in the American Journal of Roentgenology found that MRI had a 98% sensitivity rate in detecting postpartum breast cancers, leading to changes in surgical management for 28% of patients. The study also highlighted the importance of preoperative planning in managing these aggressive cancers.
The project will develop new contrast agents based on rare earth fluorides, enhancing MRI image analysis for early disease detection. Researchers aim to increase patients' chances for full recovery by improving diagnostics.
Researchers at Caltech have developed a prototype miniature medical device that can diagnose and treat diseases by tracking its location in the body. The ATOMS devices, which borrow from MRI principles, contain integrated sensors and wireless transmission technology to mimic atomic resonance properties.
A new app has been developed that can noninvasively provide detailed information about heart health using a smartphone camera. The app measures pressure waveforms of blood flow through the cardiovascular system and has been shown to be as accurate as echocardiography in estimating left ventricular ejection fraction.
The study found that utilization rates for musculoskeletal extremity imaging modalities increased significantly between 1994 and 2013, with MRI experiencing an initial period of rapid growth. The four most common modalities - radiography, ultrasound, MRI, and CT - saw increases in volume and per-beneficiary utilization.
Researchers use MRI elastogram to measure kidney scarring and predict future kidney function within one year. The test detects high variability in scarring throughout the entire organ and is comparable to traditional needle biopsies.
Researchers at Aalto University and the University of Helsinki have developed a method to improve metacognition using magnetic stimulation. The study showed that transcranial magnetic stimulation targeting the prefrontal cortex can enhance test subjects' ability to evaluate their performance in a tactile working memory task.
A recent study of over 5 years of pediatric patients treated for sports concussion found that magnetic resonance imaging (MRI) revealed structural changes to the brain related to persistent symptoms. However, the study indicated that MRI in children with persistent symptoms after concussion rarely identified brain injury.
Researchers at CNIC and FJD have demonstrated a bimodal postinfarction inflammatory reaction in human patients using advanced MRI technology. The study reveals two distinct edematous reactions occurring at different times after an infarction, with implications for clinical trials and future studies.
A study published in The Journal of Bone & Joint Surgery found that early surgery to repair supraspinatus tears leads to substantial improvement in clinical and radiographic outcomes at 10 years. The results suggest that preventing later rotator cuff muscle degeneration is key to long-term success.
Researchers at Case Western Reserve University have developed a new multicolor MRI method that enables simultaneous detection of two different contrast agents, allowing for immediate comparisons of diseased and healthy tissue. This breakthrough has the potential to transform molecular imaging and aid disease diagnosis.
Research reveals distinct molecular patterns in premature infants' cerebellum, indicating a cellular response to interrupted development. The findings may offer insights into long-term complications of pre-term birth and potential interventions to improve outcomes.
A new study published in Radiology found structural abnormalities in the brains of individuals with one of the most common genetic causes of autism. The abnormalities corresponded to cognitive and behavioral impairments, highlighting a potential future role for imaging in identifying those who need urgent intervention.
Researchers recommend reevaluating the need for contrast agents in MRI scans to minimize brain accumulation and potential health risks. Emerging evidence suggests that small amounts of gadolinium deposit in certain brain areas after repeated use, but the scientific community agrees that the current benefits outweigh these risks.
Researchers developed a new non-toxic contrast agent for magnetic resonance imaging (MRI) and magnetic resonance angiography (MRA), surpassing gadolinium's limitations. The agent, PEG-IONCs, demonstrated high biocompatibility in rabbits, beagle dogs, and macaque monkeys, showing promise as a next-generation diagnostic tool.
Researchers developed a novel framework using 3D MRI to characterize the shape, volume, morphometry, and texture of placentas during pregnancy. The framework accurately predicted pregnancies complicated by FGR with 86% accuracy, and estimated birth weight reasonably well.
MRI provides a comprehensive evaluation method for living liver donors, replacing invasive and time-consuming conventional methods. The use of updated MRI-based techniques improves image quality, enabling non-invasive assessment of hepatic steatosis and vascular anatomy.
Researchers found that genetic variations from Neanderthals shape modern human brain structures, particularly those involved in tool use and visualization. This may lead to trade-offs with social brain function, potentially contributing to deficits seen in these disorders.
A new study published in Radiology uses a combination of MRI techniques to identify brain regions associated with cognitive impairment in active professional fighters. The researchers found that lower gray matter volume and white matter tract integrity at baseline measurements were linked to increased risk of cognitive decline over time.
Researchers have created a new gadolinium-based probe for noninvasive monitoring of lung fibrogenesis, which can lead to scarring. The probe targets allysine, an amino acid indicative of active collagen cross-linking, and displays high target selectivity in both test tube and real mouse models.
Researchers developed a metal-free contrast agent containing organic molecules called nitroxides, which can accumulate at tumor sites for extended periods without causing harm. The new agent has improved MRI relaxivity and stability, making it suitable for long-term imaging of tumors in cancer patients.
A study found significant abnormalities in Parkinson's disease patients' visual systems, including optic radiations alterations and white matter concentration reductions. These changes may serve as biomarkers for early detection and monitoring of the disease.
Researchers at Medical University of South Carolina found a significant correlation between microstructural white matter changes and aphasia recovery after speech therapy. The study supports the dual-stream language model and highlights the importance of structural plasticity in semantic skills, leading to improved treatment outcomes.
A team led by Gang Han has designed a human protein-based, tumor-targeting Magnetic Resonance Imaging (MRI) contrast that can be easily cleared by the body. This discovery holds promise for clinical applications, including enhanced MRI contrast for early-stage tumor detection.
Research reveals dose-dependent gadolinium deposits in normal brain tissue of patients who underwent MRI with contrast agents, suggesting a widespread issue. The study's findings contradict previous assumptions about the blood-brain barrier's impermeability to gadolinium.
A multicenter study found that MRI screening added 3.8 additional cancers per 1,000 women compared to mammography alone, while ultrasonography added 2.4 additional cancers. Women treated with breast conservation surgery and radiotherapy remain at increased risk for second breast cancers.
A new method of measuring sports-related muscle injury uses localised bioimpedance measurement (L-BIA) to quantify damage and provide accurate return-to-play time. The study found L-BIA enables clinicians to differentiate between two types of partial muscle tears that cannot be distinguished using MRI.
Cancer diagnosis at early stages remains challenging, but dual modal imaging using MRI and optical imaging has been developed. Europium doped gadolinium oxide nanorods were synthesized to produce bright contrasts in both imaging modalities.
A summer reading program showed significant improvement in children from lower-income families, with anatomical changes in the brain detected. Higher socioeconomic backgrounds were initially expected to show more improvement, but the study found that family income level was the most predictive factor.
Researchers used MRIs to analyze infant brain connectivity and synchronize brain regions. The study found that differences in these connections at six months could predict autism diagnoses at two years old, with the machine learning classifier correctly identifying 81% of babies who developed autism.
A new metasurface-based technology has been tested on humans, providing higher signals from local brain regions and potentially reducing image acquisition time or acquiring higher resolution images. The use of metasurfaces could improve MRI comfort for patients and disease diagnosis.
Researchers found that using MRI to detect lesions and guide biopsies increased standardized quality-adjusted life years for patients, and was cost-effective in 94.05% of simulations. This approach could change how doctors identify and sample cancer lesions, reducing unnecessary treatments and costs.
A team from the Technical University of Munich has developed a pH sensor that renders pH values visible through magnetic resonance imaging (MRI) - in a non-invasive, radiation-free manner. This method could provide insights into tumor metabolism and help evaluate the efficacy of tumor treatments.
Research on 48 fetuses exposed to Zika found that three had abnormal fetal MRIs, including heterotopia, parietal encephalocele, and thin corpus callosum. The vast majority of fetuses had normal MRI results, but long-term neurological outcomes remain uncertain.
Researchers have developed a novel NMR technique that can extract full metabolic profiles from living organisms, providing insights into disease diagnosis and biological processes. The technique has potential for non-invasive disease detection and understanding brain chemistry.
The American Roentgen Ray Society (ARRS) honors Norman J. Beauchamp Jr. and Robert A. Novelline for their contributions to medical imaging research and clinical practice. These gold medalists are recognized for their work in developing advanced MRI imaging techniques and advancing trauma diagnosis.
Researchers have developed a means of non-invasively tracking nanodiamonds with magnetic resonance imaging (MRI), opening up new applications in disease diagnosis and therapy. The technique uses the Overhauser effect to boost the weak magnetic resonance signal of diamond, allowing for high-contrast imaging over indefinite periods.
A team of neuroscientists has developed a technique that predicts brain age based on MRI scans, finding a link between the discrepancy and increased risk of mental and physical health decline. The study shows that those with 'older brains' are more likely to die before 80, suggesting potential for early intervention.