Articles tagged with Magnetic Resonance Imaging
A study using MR spectroscopy with MRI has successfully identified breast cancers in non-mass enhancing lesions without invasive biopsies. By measuring choline compounds, MR spectroscopy provides specific and sensitive results, reducing the need for unnecessary biopsies.
Apolipoprotein E (APOE) genetic risk factor for Alzheimer's disease will be examined in a five-year project testing healthy adults aged 18-75. The study aims to identify markers sensitive to APOE, potentially leading to earlier detection and prevention of the disease.
A Rice University research team has found that damage to the ventrolateral nucleus (VL) of the thalamus can lead to cross-wiring in the brain, resulting in synesthesia. The study, led by Tony Ro, used neuroimaging and behavioral studies on a patient with a rare stroke to demonstrate the VL's role in sensory processing.
A study published in Annals of Neurology found that the ventrolateral nucleus, a deep brain area, is involved in sensory processing. Researchers used behavioral and neuroimaging studies to investigate a patient who experienced changes in sensory perception after a stroke affecting only this region.
Researchers at Durham University have created a chemical compound containing fluorine that can be used in a 'chemically-sensitive MRI scan' to identify disease progression without biopsies. The compound reacts differently according to body acidity levels, highlighting tumors on the resulting scan.
A newly developed DNA vaccine against multiple sclerosis appears safe and may produce beneficial changes in the brains and immune systems of individuals with MS. The vaccine showed a reduction in cytokine-producing cells targeting myelin proteins, as well as a trend toward a decrease in contrast-enhancing lesions on brain MRI.
Researchers at the University of Bonn found that MRI is substantially more accurate than mammography in detecting very early stages of breast cancer, including preinvasive DCIS. The study detected 167 cases of early breast cancer, with MRI identifying 152 cases and mammography detecting only 93 cases.
A study found that MRI outperformed mammography in detecting breast cancer in its earliest stage. Women diagnosed with ductal carcinoma in situ (DCIS) using MRI had a higher sensitivity than those detected by mammography.
A multicenter study compared screening methods in high-risk women, finding that MRI accurately identifies tumors missed by mammography and ultrasound. The study suggests that women at high risk for breast cancer can benefit from undergoing screening MRI to detect more cancers.
Researchers at Johns Hopkins have developed a new technique to track and protect transplanted insulin-producing cells in a diabetic animal model. The method uses magnetic capsules to encapsulate the cells, avoiding immune rejection and allowing for successful long-term function.
Researchers have developed a genetically modified mouse model using the ferritin reporter gene, enabling live cell imaging via magnetic resonance imaging (MRI) without additional substances. This breakthrough overcomes limitations in detecting signal changes in tissues, such as fetal development and the central nervous system.
Research found 28 out of 33 young elite tennis players had spinal abnormalities, including disc degeneration, herniated discs, and stress fractures. The study highlights the need to modify training techniques to minimize musculoskeletal damage in young athletes.
Researchers at Duke University have developed a new method for creating ultra-high resolution 3D images of tiny mouse brains using magnetic resonance imaging. The technology allows for the detailed visualization of brain structures and their relationship to genetics, enabling scientists to study gene-brain connections.
A recent study found that hyperintense lesions in older patients may indicate more severe brain damage, associated with conditions like dementia and memory problems. The study's lead author suggests that these lesions could be a sign of widespread disease in the brain.
A new study published in the Journal of Orthopaedic Research found that femoro-acetabular impingement (FAI) was seen in all five healthy female volunteers, despite no reported hip pain. The results suggest that FAI may not be a cause of osteoarthritis in some racial groups, particularly in Asian populations.
A new study found that software enhancement of breast MRI scans reduces false positive identifications by 23 percent, improving the accuracy of radiologists. The software analyzes multiple imaging series to provide detailed data on lesion morphology and kinetic features.
A new 3D ultrasound scanner developed by Duke University researchers enables better brain tumor detection and minimally invasive surgery guidance. The device, inserted through a small hole in the skull, produces high-quality images of brain structures, overcoming limitations of traditional MRI and CT scans.
Michael Garwood, a University of Minnesota professor, has been awarded the 2007 Gold Medal Award for his pioneering work on incorporating MRI with MRS technology to non-invasively diagnose cancer. His research improves the accuracy of cancer diagnosis and monitoring treatment response.
The NIH has awarded nearly $21 million to fund high-end instrumentation grants, enabling advanced biomedical research and treatments. The grants support the purchase of sophisticated instruments costing over $750,000 at institutions nationwide.
Researchers from the Alzheimer’s Disease Neuroimaging Initiative (ADNI) report promising early findings on imaging and biomarker analysis. The study reveals improved methods and uniform standards for tracking brain changes and predicting Alzheimer's disease, potentially leading to faster and more efficient evaluation of potential thera...
Recent studies conducted at Mayo Clinic have found that MRI is superior to mammography in detecting additional tumors in the same breast and identifying new tumors in the healthy breast. The technology has also revealed distinct patterns between ipsilateral and contralateral tumors, guiding its use.
Researchers have developed a new, biocompatible MRI contrast agent using manganese oxide nanoparticles that produces clear images of mouse brains. The agent allows for high-contrast views of brain anatomy and has potential applications in diagnosing brain diseases such as Alzheimer's and Parkinson's.
A study published in Radiology found that MRI can predict full or partial recovery of patients with acute spinal cord injuries by assessing MR images within 48 hours. The severity of MSCC, bleeding, and cord swelling are key indicators of a poor prognosis, while their absence indicates a good chance for neurological recovery.
Researchers at Mayo Clinic have developed a new imaging technique called magnetic resonance elastography (MRE) to diagnose liver diseases. MRE accurately measures the hardness or elasticity of the liver, enabling non-invasive diagnosis of fibrosis and cirrhosis.
A study found that breast MRI altered surgical management in 36% of patients, changing the plan from lumpectomy to mastectomy or increasing tissue removal. The change was beneficial in 22 cases, suggesting breast MRI may play a role in staging newly diagnosed breast cancers.
A new NIH study is tracking the brain and behavioral development of over 500 healthy American children from birth to age 18. The study found that children approach adult levels of performance on many basic cognitive and motor skills by age 11 or 12, but there were no dramatic increases in cognitive growth during adolescence.
A University of Arizona scientist is conducting a 5-year study to map the brain's role in language, attention, and memory. The researcher uses MRI scans to reveal complex interactions between brain regions involved in these processes.
Michael Weiner, a pioneering brain imaging researcher at San Francisco VA Medical Center, has received the 2006 William S. Middleton Award for his outstanding achievements in biomedical research. The award recognizes his contributions to clinical magnetic resonance imaging and his leadership in nationwide clinical trials.
Researchers analyzed post-mortem brain slices using 3T and 7T MRI, revealing 7T's ability to detect more MS lesions. This advancement can delay disease conversion and improve monitoring of neurological deficits in multiple sclerosis patients.
A recent study using MRI found that 88% of patients with knee osteoarthrosis exhibit abnormalities in the lateral collateral ligament complex. The study also identified a significant association between lateral compartment osteoarthrosis and fibular collateral ligament abnormalities.
A recent study found that MRI and MRS correctly staged 12 out of 16 patients with prostate cancer, enabling surgeons to plan wide resection of the neurovascular bundle. This improved accuracy helps ensure negative surgical margins and effective operations.
A recent study found that CT and MRI are highly accurate in determining optimal candidates for liver transplantation in patients with cirrhosis. The study demonstrated agreement between radiology and pathology staging in 96.5-97.5% of patients, supporting the use of imaging tools in candidate selection.
A study of 232 older adults found a positive association between high calcium and vitamin D intake and increased brain lesion volume, which can lead to cognitive decline, depression, and stroke. The researchers controlled for age, hypertension, and other factors but found no influence on the relationship.
Researchers at UCLA used a novel brain imaging technique to show that lithium increases gray matter in the brains of people with bipolar disorder, particularly in areas critical for attention and emotional control. The findings suggest that existing gray matter in these regions may be underused or dysfunctional.
Researchers at Johns Hopkins Medicine have developed a motor that can safely power remote-controlled robotic medical devices for cancer biopsies and therapies guided by magnetic resonance imaging. The motor, dubbed PneuStep, is made entirely out of plastics, ceramics, and rubber and is driven by light and air.
A combined imaging approach that combines standard MRI scans with specialized contrast-enhanced techniques may provide more effective diagnoses in patients with difficult-to-detect blood clots in veins of the brain. This approach could lead to better understanding of the disease process and potentially alter treatment regimens.
A multi-center study found that MRI screening detected cancer in the opposite breast in 30% of women with recent breast cancer diagnosis. The cancers were missed by previous mammography and clinical exam. The authors recommend MRI screening for high-risk populations, but emphasize its expense and limited ability to detect calcifications.
A major clinical trial shows that MRI scans can quickly identify cancer in the opposite breast of women diagnosed with cancer in one breast. The study found a 90% accuracy rate for detecting contralateral breast cancers.
An international study by the University of Bonn found that MRI can detect up to 30 cancers in the opposite breast of women with recent unilateral breast cancer diagnoses. The study's results show a 99.6% confidence level that no breast cancer is present if an MRI scan is normal, making preventive mastectomy unnecessary.
A new synthetic molecule has been developed to deliver an imaging enhancer to cholesterol-filled cells, improving detection by 79 percent. The technique allows physicians to diagnose unstable plaques and identify high-risk patients for early treatment.
Researchers developed nanoparticles that can label and track stem cells used in medical treatments, offering a new way to monitor tumors and diagnose cardiovascular problems. The technology uses MRI scanning to detect the presence of labeled cells, allowing for more accurate measurements and better understanding of each cell type's role.
Researchers at Johns Hopkins developed a new technique for noninvasively tracking cells in the body using genetically encoded cells producing natural contrast visible via MRI. The method appears more effective than existing methods for detecting injected biomaterials, and offers high-resolution imaging without tissue removal.
Research suggests that obstructive sleep apnea patients with moderate to severe disease are at higher risk for stroke due to silent brain infarction lesions. The use of continuous positive airway pressure therapy has been shown to lower markers of platelet activation and reduce the incidence of subsequent ischemic brain lesions.
Functional connectivity MRI studies revealed that lower brain connectivity regions correlate with impaired visual field perception in neglected stroke patients. The study provides new insights into the neurological details of spatial neglect, highlighting the value of MRI in studying behavioral symptoms.
A new study uses MRI to measure intra-abdominal fat, a type of fat that can predispose children to adult diseases like heart disease and diabetes. The study found strong correlations between single-slice MRI measurements and clinical measures, suggesting that this method could be useful in monitoring adolescents at risk.
Professor Sarah Codd's research uses magnetic resonance microscopy to study fuel cells, medical catheters, and contaminated soil and water. The NSF Career Award will support her work in advancing the technique and educating engineers about its applications.
Researchers have discovered unique properties in a molecular magnet that could significantly increase the resolution of MRIs, leading to more accurate diagnoses. The new material, Fe8, is non-toxic and water-soluble, making it safe for injection into the body.
A recent study found that the extent of brain tissue loss and lesion load at diagnosis can predict the rate of brain atrophy over two years in MS patients. Baseline MRI variables, including brain volume and T2 lesions, are associated with subsequent brain volume change.
Researchers at NIST create molecular nanomagnets that offer consistent design and high contrast, improving MRI imaging. The new agents can be turned on only when bonded to a target molecule or cell, with no toxicity issues.
A recent study using MRI found that 26% of vaginally delivered babies had small bleeds in and around the brain. The bleeds were likely caused by pressure on the skull during delivery. Most bleeds resolve over time without issues, but larger ones may cause problems later in childhood.
A recent NIH study found that magnetic resonance imaging (MRI) is more sensitive than computed tomography (CT) in diagnosing acute ischemic stroke, the most common form of stroke. This can lead to better diagnosis and treatment for patients, with potential benefits including reduced misdiagnosis and improved patient outcomes.
Researchers used MRI to detect macrophages in arterial walls, which indicate inflammation and cardiovascular disease. The study found a 79% increase in detection compared to baseline images, suggesting a potential noninvasive screening tool for heart attack risk.
A recent study found that MRI is more sensitive and reliable for detecting acute stroke than CT, with a sensitivity of 83% compared to CT's 26%. This suggests that MRI should be the preferred test for accurate diagnosis in clinical practice.
A possible association has been found between a popular MRI contrast agent and the incidence of nephrogenic systemic fibrosis in patients with kidney disease. The study recommends avoiding gadodiamide in patients with any degree of renal disease due to the vast majority of NSF cases being associated with its use.
Researchers developed Interferometric Synthetic Aperture Microscopy, a novel technique that produces crisp three-dimensional images from out-of-focus data. This method can perform high-speed, micron-scale imaging without time-consuming processing or sectioning of tissue.
Mayo Clinic researchers use advanced MRI to predict surgical success in rare sciatic notch dumbbell-shaped tumors. The 3-Tesla MRI system provides detailed images of tumor and nerve relationships, allowing for safe removal of tumors while protecting nerves.
A new study found that MRI changed treatment plans for 35% of patients with ankle pain, reducing potential diagnoses from 2.3 to 1.2. The imaging modality increased referring physicians' confidence in their diagnoses by 66%, improving patient outcomes.
A recent study found that patients with recurrent silent brain lesions on magnetic resonance imaging (MRI) had a higher risk of subsequent ischemic strokes and vascular-related deaths. The study, published in Archives of Neurology, suggests that MRI may depict pathological changes before the development of clinical stroke symptoms.
Researchers develop a 3D model of a child's heart using MRI scans to simulate blood flow and optimize surgical procedures for complex congenital heart defects. The system aims to improve quality of life for children with single-ventricle hearts by reducing the need for multiple surgeries.
Researchers used MRI to show that a 90-degree sitting position causes more strain on the spine than an optimal 135-degree posture. This finding could help prevent back pain by advising patients to correct their sitting posture.