Articles tagged with Magnetic Resonance Imaging
A new non-invasive microscopy technique uses quantitative phase microscopy and Raman spectroscopy to detect the activation state of macrophage cells and distinguish between different cell types. This approach enables high sensitivity at the single-cell level, revealing cellular heterogeneity and outlier behaviors.
A new glassy carbon electrode has been developed to replace metal-based electrodes in deep brain stimulation procedures. The novel material is safer, more durable and can read both chemical and electrical signals from the brain.
Researchers used powerful imaging technology to discover a common indicator of brain inflammation in early-stage MS patients and its link to gray matter damage. The study found LME was present in nearly two-thirds of the patients, with significant correlations to lesions in gray matter regions.
A new study finds that gadolinium-enhanced MRI is a useful tool in diagnosing polymyalgia rheumatica (PMR), with 76% sensitivity and 85% specificity. The test can also predict recurrence, with patients who developed recurrences having less enhancement of their rotator cuff tendon and more synovial hypertrophy findings.
Researchers found that using ultrasound to guide treatment strategy does not improve treatment decisions in patients with early rheumatoid arthritis. The study used MRI imaging to assess inflammatory activity and structural damage progression, but found no significant difference between the two groups.
Researchers developed an AI-powered method to identify biomarkers in MRI data that can help diagnose CM-associated pain in dogs. The study found that certain features in the third ventricle and sphenoid bone are associated with pain, while others are linked to syringomyelia.
Researchers developed a new imaging technique to track maternal blood flow to the placenta, identifying women at risk for complications such as preeclampsia and intrauterine growth restriction. The study found that women with reduced placental blood flow later developed one or more complications.
Researchers have developed an intelligent metamaterial that boosts the energy emitted by a patient's body, increasing signal-to-noise ratio and improving MRI imaging. The technology reduces scan time and cost, making high-quality imaging more accessible to patients worldwide.
A multidisciplinary team of MGH researchers has created the highest resolution MRI scan of the human brain, with a resolution of 1,000 times more detailed than standard clinical scans. This dataset has broad applications in understanding brain anatomy and diseases.
Researchers at Georgia State University have developed a protein-based contrast agent that can detect early-stage liver diseases, including liver fibrosis, with high accuracy and sensitivity. The new method uses a lower dosage of contrast metal gadolinium, reducing the risk of metal toxicity and enabling earlier diagnosis and treatment.
A Mayo Clinic study reveals that commercial facial recognition software can accurately identify people from brain MRI scans, even with image face removal. The study found an 83% success rate in identifying participants using publicly available facial recognition software.
Researchers found moderate levels of covariation between human and chimpanzee brain and braincase features, but distinct positions of brain sulci relative to cranial sutures in humans. The study suggests that changes in braincase morphology may be related to increased encephalization and bipedalism.
Researchers discovered traumatic microbleeds are a form of blood vessel injury following brain trauma, and predict poor outcomes. The study found that patients with severe head injuries were more likely to have microbleeds and greater disability.
A multi-million dollar study is enrolling pregnant women to track newborns' brain development and behavior after opioid exposure. Researchers will analyze brain images taken at various ages to identify early biomarkers of neurological dysfunction.
Research found that 45-year-old slow walkers have 'accelerated aging' on a 19-measure scale, with poorer lung function, teeth, and immune systems compared to faster walkers. Early life neurocognitive testing also predicted walking speed at age 45.
A new interdisciplinary study points to overexposure to pesticides as a likely cause for neurological symptoms among Canadian diplomats residing in Havana, Cuba in 2016. The research used advanced brain imaging tools and found changes in the brain that occurred during time in Havana.
Researchers at NIH and Siemens developed a low-magnetic-field MRI system that improves image quality of lungs and other internal structures, making medical imaging more affordable and accessible. The new system also reduces the risk of heating and allows for safer procedures for patients with pacemakers or defibrillators.
Researchers created the world's most realistic model of the human hand's musculoskeletal system using MRI and visual effects techniques. This breakthrough has implications for computer graphics, prosthetics, medical education, robotics, and virtual reality.
A study of adolescent and adult athletes found evidence of damage to the brain's protective barrier, without a reported concussion. The researchers detected leaks in the blood-brain barrier using advanced MRI protocol and biomarkers, suggesting that mild impact can still cause significant trauma.
Researchers found that children's brains are becoming more myelinated, which could affect estimates of cortical thickness. This discovery challenges previous hypotheses on brain development and has implications for understanding neurodegenerative diseases like Multiple Sclerosis.
Automated machine learning techniques improve efficiency and accuracy in analyzing heart function on cardiac MRI scans. The study, conducted in the UK, found that AI can analyze a scan in approximately four seconds with similar precision to experts.
A University of Calgary-led study found that MRI scans can significantly improve the diagnosis of minor strokes and transient ischemic attacks (TIAs). In 30% of cases, the MRI scan led to a change in diagnosis. The study's findings suggest that MRI scans are essential for patients with non-traditional symptoms, reducing unnecessary med...
Researchers at CU School of Medicine have developed a new imaging method called 'fast MRI' that can effectively identify traumatic brain injuries in children without exposing them to ionizing radiation or anesthesia. The study found that fast MRI was completed successfully in nearly all cases, with accuracy similar to CT scans.
A new MRI analysis technique using diffusion tensor imaging (DTI) helped predict thinking problems and dementia related to small vessel disease. Participants with the most brain damage were more likely to develop these conditions, and the scan accurately predicted three-fourths of dementia cases.
A Queensland University of Technology study found that jelly baby lollies, fish-shaped sauce containers, vitamin D capsules, and coffee beans are viable alternatives to commercial MRI markers. These items were tested on a thigh scan and showed clear visibility, making them effective for pinpointing anatomical areas or pathologies.
A study using sensor-enabled mouthguard technology and dynamic contrast-enhanced MRI found that repetitive impacts cause damage to small blood vessels in the brain, leading to 'leaky' blood vessels visible on MRI scans. The research aims to improve player safety in sports with robust return-to-play guidelines.
Researchers at Hebrew University have developed an MRI technique that can detect molecular changes in the brain, allowing for early disease diagnosis and treatment. This non-invasive method provides biological readouts of brain tissue, enabling doctors to compare scans over time and differentiate between healthy and diseased tissue.
The American Society of Nuclear Cardiology published expert consensus recommendations for multimodality imaging in cardiac amyloidosis, aiming to improve diagnosis and management. The guidelines unify standardized imaging methods, diagnostic criteria, and appropriate utilization across various imaging modalities.
The study analyzed 135 million imaging examinations among 16-21 million patients in the US and Canada, finding increased medical imaging rates among adults but declining nuclear medicine use. Imaging rates continued to rise among children except for CT, which declined since 2006.
A new study found that medical imaging rates have continued to increase in the US and Ontario, Canada, despite a campaign to reduce their use. The study analyzed over 135 million imaging exams and found that CT and MRI use have grown in most age groups, with a notable decline in children.
A recent study analyzed over 135 million imaging exams across the US and Ontario, finding that medical imaging rates have continued to increase despite campaigns to reduce their use. The study found a reacceleration in imaging use for CT and MRI scans in adults, with ongoing growth in both countries.
Researchers at University of Warwick have developed a new 3D MRI computing technique that can detect scar muscles in the heart without using gadolinium, which can damage kidneys. This technique reduces stress for patients undergoing MRI scans and provides more precise diagnoses, enabling earlier treatment for heart diseases.
Researchers found neurological markers in the brain that can detect people at-risk for developing psychotic disorders. The study used MRI scans to identify dysfunction in the striatum region, which is associated with increased levels of dopamine and faulty learning feedback.
A new blood test developed by UCSF has shown high accuracy in detecting concussions absent on CT scans, with the potential to prevent unnecessary radiation exposure and improve patient care. The test measures brain protein levels, which are significantly elevated in patients with traumatic brain injuries.
A recent study found that vaping impairs vascular function, reducing blood flow and increasing arterial stiffness in healthy adults. The study used MRI scans to measure the effects of e-cigarette inhalation on the body's vascular system.
A small number of pregnant women are exposed to gadolinium-based contrast agents (GBCAs) before recognition of pregnancy, according to a recent study. The researchers suggest implementing pregnancy screening measures and safety protocols to reduce inadvertent exposures.
A study published in The Lancet found that covert strokes are more common than overt strokes in people over 65 who have surgery, with one in 14 patients experiencing a silent stroke. This increases the risk of cognitive decline and other complications, affecting up to three million people globally.
A recent NIH study found that chronic active lesions in the brain, marked by dark rimmed spots, are a hallmark of more aggressive and disabling forms of multiple sclerosis. The study suggests that these lesions may play a role in progressive MS and offers hope for developing new treatments.
This review analyzes the diagnostic value of ultrasound in evaluating 7 major arthritic conditions. Ultrasound is found to be effective in delineating characteristic features for each condition, making it a convenient and accurate imaging modality.
A Belgian team developed a two-in-one contrast agent for medical imaging, combining MRI and photoacoustic imaging techniques. The bimodal probe enhances sensitivity while minimizing risks for patients.
Japanese scientists have developed a new method to construct 3D models from 2D images, overcoming several limitations in current methods. The approach uses non-rigid registration and blending of rigid transforms to create accurate 3D reconstructions of human embryos with high success.
The brains of individuals with exceptional general knowledge exhibit efficient structural networking, allowing for better information integration and recall. This is evident in a recent study where participants with more efficient fibre networks scored higher on the Bochum Knowledge Test.
A new imaging technique uses magnetic properties of the heart muscle to quantify changes in blood flow, identifying areas impacted by coronary atherosclerosis. This method eliminates the need for contrast agents or pharmacological stress tests, offering a faster and potentially safer diagnostic option for CAD patients.
A portable, noninvasive fluid monitoring device has been developed using nuclear magnetic resonance technology, providing accurate measurements of leg fluid buildup in patients with end-stage kidney disease. The device's portability and ease-of-use could enable clinicians to track fluid buildup at the bedside, improving patient care.
A new study has found a significant increase in the use of computed tomography (CT) scans during pregnancy in the United States over the last two decades, exposing mothers and fetuses to ionizing radiation. The study suggests that alternative methods without radiation should be considered whenever possible.
Wearing magnetic eyelashes during MRI can create substantial artifact, obscuring entire phantom. The eyelashes detached from the phantom after scanning, attracted to each other due to friction and adhesion.
Researchers studied cortical thickness in 43 infants over two years, finding it increases rapidly until 14 months. Each developmental region of thickness was functionally important, with some continuing to thicken beyond 2 years.
Researchers found that measuring the distance between the tibial tubercle and trochlear groove using MRI can accurately predict knee instability. A TT-TG distance of 13 mm is identified as a guideline for identifying patients at risk, with further study planned to explore contributing factors.
A recent study suggests that arthroscopy is a more accurate method than magnetic resonance imaging (MRI) for staging chondral injuries in the knee. The study found that arthroscopy was correct in 47% of cases, while MRI had a specificity and sensitivity of 73% and 42%, respectively.
A new international consensus document provides guidelines for the conduct of magnetic resonance imaging studies after a myocardial infarction. The main outcome measure recommended is absolute infarct size, with scanning timing between 3 and 7 days post-infarction.
A comprehensive study of MS patients found that gadolinium deposition occurs early in the disease, but does not have a clinical impact. However, male patients showed more deposition than female patients, which may be related to dosage based on weight.
Researchers at QNS have developed a technique to visualize the magnetic field of single atoms with unprecedented resolution. This breakthrough enables the mapping of spin distribution in complex structures such as molecules and magnetic materials.
A new mini MRI scanner uses 'magic angle' effect to visualize knee structures, helping diagnose ligament and tendon damage. The technology could reduce NHS waiting times for MRI scans and improve treatment outcomes.
A study by Goethe University Frankfurt has demonstrated the safety and efficacy of non-invasive magnetic resonance imaging (MRI) in guiding therapy decisions for patients with stable chest pain and coronary heart disease. MRI measurements were found to be as safe as cardiac catheterization, with reduced need for invasive procedures.
A 40-minute MRI scan has been shown to guide treatment decisions for patients with angina, resulting in fewer hospital stays and procedures. The MR-INFORM trial found similar patient outcomes between those who received the standard invasive angiography and those whose treatment was dictated by their MRI scan.
A recent study published in the Journal of Hepatology found that a low-carb Mediterranean diet reduced liver fat by 30% and visceral fat by 25%, compared to low-fat diets. The study suggests that reducing hepatic fat is a more effective predictor of long-term health risks than visceral fat.
Researchers at UCLA Health Sciences have developed a more effective method for detecting prostate cancer by combining biopsy strategies. The new approach, which includes MRI-guided biopsy, increased the rate of cancer detection to up to 33% compared to traditional methods.
The new magnetic metamaterial, made of plastic and copper, can amplify MRI imaging capabilities and cut scan time in half. It has the potential to increase the number of patients seen by clinics and decrease associated costs without risking higher-strength magnetic fields.
A large study published in Radiology found that breast MRI screening for breast cancer survivors leads to higher cancer detection rates, but also results in more unnecessary biopsies. The study analyzed data from over 13,000 women and found no significant differences in sensitivity between breast MRI and mammography.
Researchers developed a cardiac MRI method to predict mortality risk in PAH patients. By monitoring right ventricular function, doctors can provide targeted therapies and measure their effectiveness.