Articles tagged with Magnetic Resonance Imaging
Researchers create gadonanotubes by encasing gadolinium in carbon nanotubes, significantly reducing toxicity while boosting effectiveness. The new agents show promising results in tests at Rice, Houston, and Swiss laboratories.
Researchers used diffusion MRI to measure water movement in treated fibroids, showing significant signal intensity and ADC values. This non-invasive technique may improve monitoring of ultrasound treatment success and be useful for other focused ultrasound treatments.
A recent study published in the American Journal of Roentgenology found that MRI is more comprehensive than SPECT in assessing heart damage in patients with hypertrophic cardiomyopathy. MRI was able to detect small areas of heart damage and provide important data on cardiac function, whereas SPECT only became relevant if no abnormaliti...
MDCT arthrography outperforms MRI in detecting cartilage problems, offering better 3D evaluation and tissue contrast. The study suggests MDCT arthrography as a prominent method for imaging patients with hip dysplasia.
A new contrast agent enables quicker and more thorough MRI screenings for potential living liver donors. The study found that this agent can image the liver, bile duct, and vessels simultaneously, reducing the need for separate examinations.
A study found that Lorenzo's oil therapy can prevent MRI abnormalities and neurological symptoms in patients with asymptomatic ALD. The treatment reduced saturated very long-chain fatty acid levels, which may protect against inflammatory cerebral disease.
A recent study published in the American Journal of Roentgenology found that contrast-enhanced MRI is more accurate than FDG-PET in detecting liver tumors, especially for smaller lesions. The study analyzed 79 liver tumors and showed an accuracy rate of 75.5% for MRI versus 64.1% for PET.
Researchers used a non-invasive MRI technique to distinguish between Alzheimer's disease and frontotemporal dementia. The study successfully differentiated between the two conditions using arterial spin labeling, which measures blood flow in the brain.
A study of 58 breast cancer patients found that initial tumor volume and changes in tumor volume during chemotherapy are strong predictors of recurrence-free survival. MRI measurements can help tailor treatment strategies for individual patients.
A Mayo Clinic case series reveals a link between long-term welding and neurological impairment, including Parkinsonian syndrome, multifocal myoclonus, vestibular-auditory dysfunction, and mild cognitive impairment. The study emphasizes the importance of adequate fume protective measures to prevent damage from manganese exposure.
A new CAD system has improved the accuracy of breast MRI analysis, allowing radiologists to better determine cancer lesion sizes. The system reduced analysis time by an average of 7 minutes compared to standard software.
A new MRI technique called isotropic imaging shows promise in detecting meniscal tears and other knee injuries, potentially avoiding knee surgery altogether. With an accuracy rate of 96%, the technique could be used to determine if patients need immediate surgery or can benefit from rehabilitation first.
Researchers have developed a whole-body MRI technique that can scan patients' entire bodies in under 20 minutes for cancer spread to bone, detecting 100% of cases. This method offers better sensitivity and specificity than other methods, making it a promising tool for non-invasive cancer diagnosis.
Research found that MRI was nearly twice as sensitive as X-ray mammography in detecting breast cancer in high-risk women. Combining both methods increased detection to 94%. Women with the BRCA1 gene mutation saw a significant boost in tumor detection, making MRI an effective screening tool.
Researchers use ferritin as a reporter gene to track genetic modifications in tumor cells, enabling monitoring of gene therapy's progress. This technique has far-reaching implications for diseases like diabetes, where genes can be tagged and tracked using MRI.
Researchers found that leptin replacement treatment altered brain structure and reduced cravings for people with an obesity gene. The study suggests new potential treatments for weight-related issues.
Researchers used brain imaging to map abnormalities in living patients with Williams syndrome, showing exceptional language skills. The findings shed light on the genetic control of human cortex development and help predict the syndrome's progression.
Researchers developed a functional diffusion map using MRI scans to track water diffusion in the brain, finding that changes predicted tumor response 10 weeks before traditional techniques. This method could spare patients from ineffective treatment and allow doctors to switch to more effective therapies.
UNH has launched its second spinout company, Xemed LLC, backed by three new NIH grants to commercialize a lung imaging technology that could benefit millions suffering from chronic obstructive pulmonary disease. The technology allows MRI to produce a clear picture of the lungs' interior, enabling doctors to see which parts are affected.
Researchers created a platform technology that can be adapted for various tissue types and preclinical uses, enabling real-time monitoring of gene expression. This approach uses magnetic resonance imaging (MRI) to non-invasively image cells at high resolution, providing insights into disease mechanisms.
Johns Hopkins researchers have found that modern implanted heart devices are safe for use in magnetic resonance imaging (MRI) machines. The team has also developed new guidelines for their use, making MRI scans more available to people who may benefit from early detection of cancer and other diseases.
New Jersey Institute of Technology's start-up company Supertron has developed a cryogenic coil to improve Magnetic Resonance Imaging (MRI) scanners for small animal imaging. This new coil will enhance installed MRIs, enabling them to produce cleaner and clearer images at an affordable price.
A UW-Madison study found that autistic children's amygdalas light up during non-threatening face gazing, stunting brain activity in the fusiform region. This challenges existing notions of facial processing in autism, suggesting a more complex relationship between social interaction and brain function.
A new study finds that MRI is more accurate than current standards in assessing the effectiveness of neoadjuvant chemotherapy for breast cancer. The imaging technique correctly identified the presence of residual tumor in 71% of cases, while sonography and clinical examination were less accurate.
A study by American College of Radiology found MRI to be useful in assessing suspected breast cancer patients, detecting additional cancers not visible on mammography or sonography. The use of computer-assisted diagnosis improved accuracy and led to recommended mastectomies for some patients.
Researchers have developed an MRI approach using shutter speed analysis, which provides more accurate information on breast cancer detection. This method distinguishes between malignant and benign tumors, improving diagnosis and treatment outcomes.
The study used combined PET and MRI to track cocaine pharmacokinetics in pregnant nonhuman primates. The results showed that cocaine accumulated at the highest levels in the liver, and to a lesser extent in the brain, suggesting a unique anatomy of fetal circulation.
A full-body MRI study found that 21% of healthy patients exhibited signs of atherosclerotic disease and 12% had peripheral vascular disease. The screenings also revealed relevant additional findings in non-targeted organs, raising questions about the benefits and risks of such screenings.
A study published in the American Journal of Roentgenology found that MRI is an excellent choice for diagnosing pregnant women with abdominal pain due to its high accuracy and safety from radiation. The study analyzed 29 patients and diagnosed 14 different causes of abdominal pain, including appendicitis and ovarian cysts.
Researchers used diffusion-weighted MRI to diagnose Creutzfeldt-Jakob Disease (CJD) in nine human cases at different stages. Early detection was achieved in all cases using this imaging technique. The study highlights the potential of diffusion-weighted MRI for early diagnosis and prevention of CJD transmission.
Researchers discovered two distinct areas in the medial frontal cortex associated with free choice and conflict. This discovery may explain why people with damage to this area seem incapable of making decisions, and has implications for our understanding of free will and decision-making processes.
A recent study found that very early treatment with infliximab plus methotrexate reduced synovitis and bone erosions in patients with rheumatoid arthritis. The treatment showed sustained benefits even after one year, improving function and quality of life.
Scientists have developed a new MRI technique to study brain anatomy in live crayfish, revealing complex anatomical structures and enabling repeated imaging. This breakthrough technology provides a powerful tool for understanding neurobiology of behavior in invertebrates.
A study found breast MRI had a high sensitivity of 88.1% for detecting breast cancer, but moderate specificity of 67.7%. The imaging modality did not significantly improve outcomes for patients with mammographically or clinically suspicious lesions.
A study published in JAMA found that MRI can accurately detect breast cancer with a high sensitivity rate of 88.1%, but its effectiveness decreases when ruling out malignancies. The technology is most beneficial for patients with difficult-to-interpret mammograms.
A study found that radiologists can identify potential problems with MRI, allowing for early treatment and prevention of injuries. Orthotics were provided to two athletes, preventing surgery and enabling them to play the entire season.
A study of 109 patients found that combining MRI and ultrasound can significantly improve quality of life scores for women with uterine fibroids. The procedure is completely non-invasive and safe, with few side effects.
Researchers successfully used iron-labeled neural stem cells to repair damaged myelin in the brains of mice with experimental autoimmune encephalomyelitis, an animal model of multiple sclerosis. This method could potentially monitor and track transplanted cells in human patients if stem cell therapy becomes available.
An international trial found that breast MRI significantly detected more cancers than mammography in high-risk young women with dense breast tissue. The study recommended MRI as a supplement to mammography for this group, improving cancer detection and potentially reducing mortality rates.
A study of 26 male college basketball players found that MRI screenings can help identify at-risk players and prevent injuries. Custom-fit shoe supports and orthotics can provide relief and prevent further debilitating injuries.
Using MRI guidance, doctors can target and freeze liver tumors with cryotherapy, achieving high success rates and minimal scarring. The non-invasive procedure results in quicker recovery times and shorter hospital stays.
Researchers used MRI to study salt crystallisation in model systems and found that it causes damage in materials with small pores. The study provides new insights into the mechanism behind salt damage in building materials and stones.
Researchers used DSC MRI to measure blood volume in eight patients with cerebral abscesses and four with malignant brain tumors. The study found no overlap in blood volume between the two groups, allowing for accurate distinction between abscesses and tumors.
A study by Chelsea S. Kidwell and colleagues found that MRI detected acute bleeding not seen on CT scans, improving detection rates for chronic hemorrhage and microbleeds. The results suggest that MRI may be superior to CT as the sole imaging technique for acute stroke diagnosis.
Intraoperative MRI improved tumor removal by detecting additional tissue that needed to be removed, altering surgical strategy in 27.5% of cases. High-field MRI provides better image quality and reduced scan time, but its high cost is a limiting factor.
A study of 236 women with BRCA1 and BRCA2 mutations found that MRI screenings detected 77% of cancers, compared to 36% for mammography. The addition of annual MRI and ultrasound to mammography improved the sensitivity of breast cancer surveillance.
A study of healthy individuals aged 60-64 found a significant relationship between high homocysteine levels and changes in deep white matter hyperintensities in the brain, which may be related to mild cognitive impairment. However, HCY levels were not associated with brain atrophy.
Researchers at Los Alamos National Laboratory have developed a method to exploit spin noise in magnetic atoms to perform detailed magnetic resonance imaging. By using laser-based Faraday rotation, the scientists measured the spectrum of spin noise in rubidium and potassium atoms, revealing their complete magnetic structure.
Scientists at the University of Pennsylvania are developing innovative techniques to study biomolecules within cells and living systems. They have created
Researchers have developed a non-invasive method to detect and trace elevated levels of an enzyme linked to plaque instability. The technique uses magnetic resonance imaging (MRI) to pinpoint plaques that are most likely to rupture, potentially allowing doctors to prioritize treatment.
Reduced gray matter volume, particularly in language centers, is associated with dyslexia. The study supports the effectiveness of intensive reading remediation therapy.
A study published in the American Journal of Roentgenology found that MRI revealed more extensive fractures in patients with greater trochanteric fractures than X-ray imaging alone. This allowed for better treatment planning and informed decisions on surgical versus nonsurgical treatment.
Physiology aims to appeal to a broader audience with innovative features and artwork, showcasing the most up-to-date physiological research. The journal's design and editorial team are committed to making the content more accessible and readable.
The new magnet features a uniform field of 21.1 Tesla in a volume 64 times larger than typical NMR systems, allowing for a wider range of scientific experiments. Scientists can now explore new avenues in chemical and biomedical science using this unique national resource.
A new study suggests that a stroke-prevention strategy for kids pioneered at MCG is working. The program, which involves regular blood transfusions and screening using transcranial Doppler, has led to an 80% decline in strokes among California children with sickle cell disease.
Fetal MRI is less dependent on variables like amniotic fluid volume and fetus position compared to sonography, making it a more reliable method for detecting cleft lip and palate. Soft palate defects can also be visualized on fetal MRI, which is essential for predicting potential complications after birth.
A recent imaging study at Carnegie Mellon University has discovered persistent sex-based differences in brain structures of mice entering adulthood, as revealed by high-resolution magnetic resonance microscopy. The findings provide a more accurate representation of how circulating hormones affect brain development compared to human ima...
A recent study using diffusion weighted imaging found small brain lesions appearing on MRI scans of amnesiac patients within hours and days of onset. The lesions were all located in the hippocampus, a key area for memory functions, suggesting a possible cause for transient global amnesia.
A new study published at ASCO finds that MRI is more effective than mammography in detecting the number and size of breast cancer tumors. The research involved over 1000 women across 17 sites, revealing that MRI detected additional cancerous lesions in 56 women, while mammograms only identified 17.
A decade-long brain development study using MRI scans shows that higher-order brain centers, such as the prefrontal cortex, mature later in life. Gray matter wanes in a back-to-front wave as neural connections are pruned, with areas performing basic functions maturing earlier.