Articles tagged with Magnetic Resonance Imaging
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 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 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 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.
A team of Oxford University researchers has identified a unique brain area in the ventrolateral frontal cortex that is involved in advanced planning and decision-making processes. This area, which does not have an equivalent in monkeys, is also linked to language processing and 'multi-tasking'.
Elena Conti wins the prize for her work on understanding the mechanisms governing RNA quality, transport, and degradation, while Denis Le Bihan receives it for his innovative brain imaging technique that has revolutionized stroke diagnosis and treatment. Both researchers will use the prize money to further their research.
Researchers discovered that brain regions synchronize their activity to make it possible for people to pay attention, with the process likened to tuning multiple walkie-talkies to the same frequency. The findings have implications for understanding attention deficits in brain injuries or strokes.
A new MRI method using CEST technology measures creatine levels in the heart, providing higher resolution than traditional methods and potentially spotting heart problems earlier. This technique could lead to improved clinical decision-making and earlier detection of heart disorders.
Researchers at University of Nottingham develop novel MRI method for diagnosing and treating Irritable Bowel Syndrome (IBS), allowing continuous bowel imaging with no risk to patients. The technique enables measurement of colon volumes, transit times, and effects of FODMAPs on gut health.
Researchers at UC Davis have developed a new MRI technique called Active-MRI that captures the movement of the wrist in real-time. This allows for more accurate diagnosis of conditions such as wrist instability, which can be misaligned and cause chronic pain and osteoarthritis.
A new study has confirmed an association between a gadolinium-based MRI contrast agent and abnormal brain tissue signals. The research suggests that the toxic component of the contrast agent may remain in the body for extended periods.
Researchers have developed a powder to enhance NMR signals, enabling faster and more accurate structure determination by NMR and early cancer diagnosis by MRI. This innovation opens new perspectives for medical imaging and potential applications in human diagnosis.
A new study by Johns Hopkins researchers found that decreased energy metabolism in heart cells is a significant independent risk factor for worsening heart failure. The study used magnetic resonance imaging to measure energy metabolism and found it was significantly lower in patients whose conditions worsened.
MIT researchers have developed an algorithm that can perform Fourier transforms using close to the theoretical minimum number of samples. This could significantly reduce the time it takes for medical devices like MRI machines to scan patients, or allow astronomers to take more detailed images of the universe.
The National Institute of Standards and Technology (NIST) has developed prototype calibration tools for ultra-low field magnetic resonance imaging (ULF-MRI), a technique that provides new contrast mechanisms and practical advantages. The ULF-MRI phantoms are designed to allow direct comparison of performance between ULF-MRI and clinica...
A study using cardiac MRI found that energy drink consumption increased peak strain and systolic strain rates in the left ventricle of the heart. The researchers advise caution for children and individuals with heart disease, highlighting the need for further studies on long-term effects.
A study using MRI technology found that veterans with mild traumatic brain injury (MTBI) caused by blasts have long-term brain differences, including changes in white matter structure. This suggests a potential link between blast exposure and ongoing cognitive symptoms in veterans.
A study presented at the Radiological Society of North America annual meeting found that ultrasound-guided PRP therapy improves functionality by 80% and pain by 75% in athletes with Achilles and patellar tendinosis. The therapy also normalizes MRI signal intensity in 90% of patients.