Articles tagged with Magnetic Resonance Imaging
Researchers found a significant association between atherosclerosis and mild cognitive impairment in a study of nearly 2,000 adults. The study used MRI and CT imaging techniques to measure plaque buildup in arteries and brain health.
A new MRI diagnostic approach has identified significant damage to the blood-brain barrier of professional football players following unreported trauma or mild concussions. The study showed that 40% of examined football players with unreported concussions had evidence of 'leaky BBB' compared to 8.3% of control athletes.
New nanoparticles can perform magnetic resonance imaging (MRI) and fluorescent imaging simultaneously, allowing for the tracking of specific molecules produced in the body. The particles were demonstrated to detect vitamin C in mice, showing strong fluorescent signals where vitamin C is present but little MRI contrast.
Scientists have pinpointed a novel role of FMRP in the embryonic development of the brain cortex, leading to delays in proper formation and affecting postnatal life and brain connectivity. The study may provide insights into cellular mechanisms affected in patients with Fragile X syndrome and autism spectrum disorders.
Researchers have rediscovered a large fiber pathway in the brain that was previously unknown, despite being visible in dozens of MRI scans. The vertical occipital fasciculus plays a role in visual processing and perception, and an algorithm has been developed to identify and measure its properties.
Dr. Peter Barrance will study the effects of in-shoe orthoses on individuals with osteoarthritis of the knee using weight-bearing MRI technology. The goal is to refine footwear modifications and reduce pain and mobility limitations associated with knee osteoarthritis.
Researchers from Universidad Politécnica de Madrid and the National Institutes of Health provide a wealth of patient imaging data to build tools for diagnosing coronary heart disease. The publication includes a virtual machine with software and data, enabling direct experimentation and annotation.
Chronic marijuana users have smaller brain volume in the orbitofrontal cortex but increased brain connectivity. The study found that earlier onset of regular marijuana use induces greater structural and functional connectivity.
Researchers at the University of Illinois have created a new online tool to study postnatal brain growth in human infants based on similarities with the piglet brain. The tool, an MRI-based brain atlas for four-week-old piglets, offers a three-dimensional averaged brain and anatomical regions of interest.
Scientists have measured high-quality factors of up to 5 million in carbon nanotube mechanical resonators, outperforming previous records. This breakthrough enables the development of ultra-sensitive sensors and quantum systems, such as magnetic resonance imaging at the atomic level.
Researchers have found structural abnormalities in the brains of people with chronic fatigue syndrome (CFS), a debilitating disease affecting over 1 million adults and children. The study suggests that magnetic resonance imaging (MRI) can help diagnose and track CFS, using specific biomarkers to measure brain structure and function.
The researchers have developed a novel measurement technique for MRI signals using a diamond sensor chip, detecting the signal from a single hydrogen atom and achieving an accuracy of better than one angstrom. This breakthrough brings them closer to imaging at the level of single molecules, with potential applications in structural bio...
Researchers at Vanderbilt University have developed a robotic device that can treat severe epilepsy with a minimally invasive procedure. The system uses a shape-memory alloy needle steered by a robotic platform to destroy the area where seizures originate, avoiding drilling through the skull.
A new study published in Radiology found that teenage baseball pitchers who throw more than 100 pitches per week are at risk for acromial apophysiolysis, a condition characterized by incomplete fusion and tenderness at the acromion. The study also found that these pitchers are more likely to develop rotator cuff tears later in life.
A new MRI technique called arterial spin labeling (ASL) can detect signs of cognitive decline in the brain even before symptoms appear. The technique measures brain perfusion and has the potential to serve as a biomarker for very early diagnosis of preclinical dementia.
Scientists have developed a new generation of hyperpolarizing agents that can be used to dramatically enhance the signal intensity of imaged body tissues without presenting any danger to the patient. The HYPSOs are made from a fine, white, porous powder containing tracking molecules, which act as markers for imaging.
Research by Bruce Beynnon and colleagues found that the size of the femoral notch and ACL volume increase the risk of noncontact ACL injuries. Female college athletes are two times more at risk than males, with soccer and rugby participants showing significantly greater injury risks. Targeting interventions for these high-risk athletes...
A study found that patients and healthcare professionals are willing to accept high rates of false-positives in cancer screening tests in exchange for increased diagnostic sensitivity. This means they are more likely to undergo unnecessary testing, such as radiologic or invasive follow-up tests, than accurate but inconclusive results.
A new technique uses perfluorocarbon tracers in combination with MRI to track therapeutic immune cells injected into patients with colorectal cancer. The study found that only half of the delivered cell vaccine remained at the inoculation site after 24 hours, but the technology shows promise for tracking other cell types and diseases.
A novel robotic system is being tested to determine if it can make prostate cancer biopsies faster, more accurate, less costly, and less discomforting for patients. The robot uses real-time MRI images to guide the insertion of needles, potentially delivering therapies with greater precision.
A new MRI technique using Diffusion Tensor Imaging (DTI) can help clinicians predict the likelihood of poor clinical outcomes following mild traumatic brain injury. This technique shows significant differences in white matter between mTBI patients with positive versus negative findings on CT and MRI evaluation.
Recent EORTC Imaging Group review highlights MRI and PET's potential for early detection of bone metastases and monitoring treatment response. The study emphasizes the need to overcome current limitations, such as those related to imaging techniques' sensitivity and specificity.
Researchers have developed an electronic skin device that can detect and image small lumps in the breast, allowing for earlier identification of breast cancer. The device has been tested on a silicone breast model and shown to be highly accurate, with a potential survival rate increase of over 94%.
The Society of Nuclear Medicine and Molecular Imaging has announced the 2014-2016 Wagner-Torizuka Fellowship recipients, which provide two-year fellowships to support Japanese physicians in early stages of their careers. The fellows focus on functional imaging using modalities such as PET/CT and SPECT/CT to elucidate pathophysiology of...
Researchers develop new method to quantify and correlate biological aggregation effects on radiofrequency heating and MRI contrast of magnetic iron oxide nanoparticles. The study presents a platform for accounting for aggregation in clinical applications, such as cancer hyperthermia.
Researchers distinguish pure imagination from related processes like remembering using MRI experiments, finding distinctive brain activity patterns. The study contributes to the debate over whether memory and imagination are separate processes.
A study found that high-dose EPO administered within 42 hours of birth reduced brain injury and white matter damage in preterm infants. The treatment was associated with improved neurodevelopmental outcomes, including lower rates of encephalopathy of prematurity.
A new study published in Radiology found that using the Wii Balance Board system can induce favorable changes in brain connections associated with balance and movement in patients with multiple sclerosis. The device helps improve balance, reducing the risk of accidental falls and related comorbidities.
A new study published in Neurobiology of Aging found that exercising improves cardiovascular strength, which may protect against cognitive impairment as we age. The researchers tested 31 young people and 54 older adults, finding that those with better aortic elasticity and aerobic fitness performed better on cognitive tests.
Researchers have developed a new approach to measuring early brain development of infants, resulting in more accurate whole brain growth charts. The study found that premature babies' brains grow faster, but may be smaller at 90 days post-delivery, highlighting the importance of inducing labor.
Researchers at New York University and the University of Cambridge have developed a method to examine supercapacitors' inner workings using magnetic resonance imaging (MRI). This technique allows them to locate molecular events responsible for device performance and explore electrolyte concentration gradients.
DWI-MRI predicts TIA patients who are at higher risk of disabling stroke, which can be prevented with immediate evaluation and treatment. Magnetic resonance imaging has changed the diagnosis of TIA from a time-based definition to a tissue-based one.
A new study by the University of Sydney found that GP visits and initial assessments for back problems drive a significant rise in diagnostic imaging tests. Most imaging tests comply with guidelines, but GPs are twice as likely to order tests during first consultations.
Scientists have designed a new self-assembling nanoparticle that targets tumours to improve MRI scanning's effectiveness and sensitivity. The particle increases the signal power and clarity of images, allowing doctors to detect cancerous cells earlier.
An animal study found that magnetic resonance imaging (MRI) can detect brain changes in young rats hours after a fever-induced seizure, indicating those at risk for developing epilepsy later in life. The MRI signal was not visible in rats that remained epilepsy-free.
A new study published in Radiology found that moderate and late preterm birth is associated with smaller brain size and less developed myelination, suggesting a disruption in the expected trajectory of brain growth. The research provides insight into brain-behavior relationships in this group of children.
The Endocrine Society recommends blood and urine tests for metanephrines to identify patients with pheochromocytomas and paragangliomas, which can cause high blood pressure and cardiovascular disease. Genetic testing is also recommended for family members at risk, based on a shared decision-making process with physicians.
A large clinical study found that MRI detected invasive breast tumours in female survivors of childhood Hodgkin lymphoma at very early stages. The study highlights the need for breast MRI screening from age 25 or eight years after chest radiation, as recommended by established guidelines.
Researchers have developed a new imaging technique to track Multiple Sclerosis (MS) progression from its earliest stages. The study uses QS Magnetic Resonance Imaging (MRI) to measure damage in specific brain areas, revealing that even at early disease stages, patients already show significant damage.
A new microfluidic chip produced by NIST can detect the presence of molecules in a complex mixture using polarized xenon gas. The device has been demonstrated to detect weak signals corresponding to fewer than 1 trillion polarized xenon atoms, rivaling low-field optical magnetometry.
A recent study by Northwell Health demonstrates that magnetic resonance imaging (MRI) guided biopsies can detect prostate cancer more accurately, with a detection rate twice as high as previous data. The new targeted approach uses MRI and transrectal ultrasound fusion to identify clinically significant prostate cancer.
A new method developed by Johns Hopkins researchers uses MRI scans to measure damage to the blood-brain barrier, allowing for more precise administration of intravenous tPA. The technique shows promise in predicting which stroke patients will benefit from treatment and which may suffer bleeding complications.
Researchers have developed a new imaging technology using SapC-DOPS to visualize brain tumors, which could lead to improved treatment options for patients. The technique delivers bio-fluorescence agents and contrast agents directly to tumors, providing valuable information for diagnosis and treatment decisions.
Researchers have modeled water properties at the nanoscale, revealing surprising characteristics that can benefit various technological applications. The study's findings may lead to advancements in biomedical imaging, particularly Magnetic Resonance Imaging (MRI), by optimizing contrast agents and improving image quality.
Researchers have identified a new and accurate test for Parkinson's disease using 3T MRI scanning technology, known as the 'swallow tail' appearance of the healthy nigrosome. This sign is absent in Parkinson's disease, making it a potential diagnostic tool for clinicians.
Scientists at Harvard University have created a magnetic resonance imaging (MRI) system that can produce nano-scale images, potentially allowing researchers to peer into the atomic structure of individual molecules. The system uses a miniaturized magnet and quantum computing technology to achieve high spatial resolution.
Researchers have made a groundbreaking discovery using MRI scans to identify brown adipose tissue in adults, a major step towards developing new weight loss treatments. The study's findings could lead to the creation of safe and effective therapies that activate brown fat to promote energy expenditure.
Researchers used MRI to identify regional white matter damage in brain regions associated with chronic dizziness and vestibulopathy after concussion. The study suggests that MRI can speed the onset of effective treatments for concussion patients.
Researchers discovered reduced dimensions of key cerebral veins after deep brain stimulation in Parkinson's disease patients. This finding suggests that bilateral subthalamic nucleus stimulation affects cerebral venous blood flow.
Researchers found that people with inner-ear disturbances exhibit distinct eye movements when exposed to MRI magnets, potentially allowing for diagnosis and treatment. Zebrafish also showed dramatic reactions to strong magnetic fields, offering a model for studying genetic factors behind balance disorders.
A new study found that 12% of doctor visits for headaches result in unnecessary brain scans, costing around $1 billion annually. The researchers suggest better public education and insurance plan designs could reduce unnecessary use and spending on scans.
Researchers developed an MRI that can visualize bone and soft tissue despite the presence of metal screws, allowing for earlier detection of osteonecrosis. The study found that 80% of patients had decreased blood flow to the injured area and osteonecrosis in the femoral head.
Researchers used ultra-high-field MRI to identify abnormalities in the substantia nigra, a key region affected by Parkinson's disease. The study showed promising results for early detection and classification of the condition, with high sensitivity and specificity rates.
A new study found that carotid artery MRI can accurately predict future cardiovascular events, including strokes and heart attacks, in people without a history of cardiovascular disease. The presence of a lipid core in the internal carotid artery was significantly associated with an increased risk of subsequent events.
A study found that people with both parents having Alzheimer's disease showed more severe brain abnormalities, including increased brain plaques and reduced brain volume. The research suggests a possible genetic link to the development of Alzheimer's disease.
Scientists at the University of Nottingham are developing non-invasive measurements using magnetic resonance imaging (MRI) to assess blood flow and oxygenation in the human kidney. The goal is to improve monitoring and treatment for chronic kidney disease, which can be caused by health conditions like diabetes and high blood pressure.
Researchers at Case Western Reserve University have developed a multifunctional nanoparticle that enables MRI to pinpoint blood vessel plaques caused by atherosclerosis. The technology is a step toward creating a non-invasive method of identifying vulnerable plaques in time for treatment.
Researchers developed a non-invasive method to measure left atrial wall fibrosis using delayed enhancement MRI, which is associated with increased risk of recurrent rhythm disorder after treatment. The study suggests that this measure may help identify patients who are more likely to benefit from ablation therapy.
Studies highlight the impact of clinical education on imaging examinations, including increased effectiveness and improved guideline adherence. Trends in diagnostic CT scans also reveal differential changes by age group and body region.
A study found that assessing brain structure and function can predict future working memory performance in healthy children and adolescents, suggesting a possible early warning system for developmental challenges.