Articles tagged with Magnetic Resonance Imaging
Magnetic resonance-guided focused ultrasound (MRgFUS) is a new interventional radiology tool showing promise in treating uterine fibroids, offering lasting relief from symptoms without surgery. In a study of over 100 patients, women experienced significant improvement in symptoms, with 90% reporting considerable or excellent relief.
A recent study reveals that 70% of professional and collegiate hockey players had abnormal hip and pelvis MRIs despite no symptoms. The findings highlight the importance of using clinical judgment alongside imaging in sports medicine diagnosis.
Postmenopausal women, especially those over 70, have a higher prevalence of cancer detected in the undiagnosed breast with MRI compared to premenopausal women. Detecting and treating both breasts at the same time may save costs and reduce patient stress.
A study published in the Journal of the American College of Radiology found that PET scanner ownership by non-radiologists has significantly increased, outpacing radiologist-owned scans. This trend contributes to unnecessary imaging utilization and increased costs.
A large academic medical center found that a significant percentage of outpatient referrals for CT and MRI studies from primary care physicians were inappropriate. The study, performed at Harborview Medical Center in Seattle, WA, included medical records from 459 elective outpatient CT and MR examinations.
A recent multicenter cohort study reveals that magnetic resonance imaging (MRI) is substantially more accurate for early diagnosis of breast cancer than digital mammography or breast ultrasound. For young women at elevated risk, annual MRI is considered necessary and sufficient for screening.
Research using MRI reveals that childhood stress and abuse can lead to permanent brain structure changes, making individuals more susceptible to developing depression. The study's findings have significant implications for early intervention and prevention strategies.
A new study suggests that annual combined screening with both mammography and breast MRI can improve life expectancy in women with increased breast cancer risk. This approach detects early-stage cancers more effectively and provides the greatest relative mortality reduction.
A study published in the American Journal of Roentgenology found that MRI accurately identified 28 malignant and 7 benign lesions, enabling accurate estimation of local disease extent in patients with malignant tumors. This noninvasive diagnostic tool may improve patient care by reducing unnecessary surgical procedures.
Researchers used contrast-enhanced MRI to differentiate between rheumatoid arthritis and psoriatic arthritis, finding a significant difference in perfusion after 15 minutes. The study suggests that contrast-enhanced MRI could play a key role in targeted therapies for each condition.
The COMICE study found that adding MRI to conventional triple assessment for breast cancer diagnosis had no impact on reoperation rates. Despite this, the study suggests that routine use of MRI in this population may not reduce health outcomes or costs, but rather increase them. The results have implications for healthcare providers an...
A new study by neurology researchers at the University at Buffalo found that blacks with multiple sclerosis (MS) have more damage to brain tissue and accumulate lesions faster than whites. This aggressive disease process in blacks is associated with reduced remyelination, a brain's ability to repair the protective myelin sheath.
A new study found that adding a contrast agent to MRI improves the accuracy of detecting lymph node metastases. The researchers concluded that incorporating contrast enhancement in malignancy criteria improves diagnostic test accuracy, and histopathologic examination should still be used as a gold standard.
Researchers found that CT scans are more accurate than MRI in ruling out coronary artery disease. Extended-duration transdermal nicotine therapy was also shown to increase smokers' chances of quitting successfully.
A recent study published in the American Journal of Roentgenology found that acute adverse reactions from gadolinium-based contrast agents used during MRI are rare, occurring in only 0.16 percent of all administrations. The majority of reactions were mild, while six moderate and two severe reactions were reported.
Researchers used MEG to distinguish between neural activity of PTSD patients and healthy controls with over 90% accuracy. A positive association was found between prediction certainty and symptom severity, suggesting potential use in gauging disorder levels.
Researchers at Northwestern University have developed a gadolinium-nanodiamond complex that dramatically enhances image contrast in magnetic resonance imaging (MRI). The complex shows a significant increase in relaxivity, resulting in vivid image contrast.
In a study published in World Journal of Gastroenterology, researchers found that MRI-enterography revealed incidental findings outside the small intestine in 25% of patients with suspected or known Crohn's disease. These extra-intestinal manifestations were rare and did not necessarily require additional examinations.
The new SBI and ACR recommendations suggest that breast cancer screening should begin at age 40, with annual screening recommended for average-risk patients. High-risk patients may start screening as early as age 30. The guidelines aim to reduce mortality rates from breast cancer through earlier detection.
A study found that only 51.6% of eligible women completed a screening MRI, with claustrophobia as the primary reason for nonparticipation. Alternative methods like ultrasound may be considered for high-risk women who cannot undergo MRI screening.
Certain cardiac pacemakers may inadequately stimulate a patient's heart while undergoing an MRI scan due to the magnetic pulses mixing with electronic pulses from the pacemaker. This can lead to incorrect or absent stimulation and is potentially dangerous for the patient undergoing the scan.
A Rice University team developed a single nanoparticle that can be tracked in real-time with MRI as it targets cancer cells, tags them with fluorescent dye and kills them with heat. This all-in-one particle is a promising example of theranostics, a growing field developing technologies for diagnosis and treatment in one procedure.
Researchers found that MRI coupled with mammography detected almost all cancers at an early stage in high-risk women, resulting in smaller cancer sizes and fewer advanced cases. This alternative screening method may convince healthcare providers to recommend yearly MRI and mammography over surgical removal of the breast.
Researchers have developed a new method using diffusion tensor imaging (DTI) to improve the removal of benign tumors in children. By visualizing nerve fiber bundles, DTI enables surgeons to avoid damaging critical brain tissue and achieve more complete tumor removal.
A clinical trial found annual ultrasound screening significantly improves early breast cancer detection in women with dense breasts, while MRI increases sensitivity but also false-positive findings. The study suggests annual ultrasound as a suitable alternative to expensive MRI for these women.
A recent study found that MRI is highly accurate in detecting placenta accreta, a condition where the placenta attaches too deeply to the uterus. The condition can lead to severe bleeding and maternal death if not diagnosed early. With an accuracy rate of 90.1%, MRI has become a valuable tool in prenatal care.
A recent study found that 95% of radiation oncologists utilize advanced imaging modalities like FDG-PET and MRI for target delineation. The most common technologies used were FDG-PET and MRI, with nearly 75% of respondents using one or both.
A new medical imaging technique called dynamic MRI has been found to identify pelvic organ prolapse in women with lower urinary tract symptoms. The condition can go undiagnosed due to its lack of symptoms at rest, but becomes apparent when the patient strains.
A simple blood test can help optimize the timing of breast MRI exams in premenopausal women with irregular cycles, reducing non-diagnostic tests and repeat scans. Researchers found that a blood test to determine serum progesterone concentration can aid in optimal timing.
Scientists are using various imaging techniques, including MRI and CT scans, to study chronic obstructive pulmonary disease (COPD) and develop a better understanding of the disease. The research aims to categorize COPD patients into two major groups based on airway dysfunction and lung tissue damage.
Researchers at UC Santa Barbara have demonstrated electrically manipulating quantum states of electrons in diamond crystals, a step towards developing quantum computers. The achievement enables the creation of magnetic fields large enough to change an atomic-scale defect's quantum state in under one billionth of a second.
Researchers developed a fast and accurate method to quantify subtle brain volume loss in Alzheimer's patients, outperforming existing measures. The new technique identifies changes in memory regions, particularly the entorhinal cortex, as sensitive markers for early disease stages.
Researchers at Rice University and the Texas Heart Institute will label stem cells with gadonanotubes to track their effectiveness in regenerating damaged heart tissue. The team aims to use MRI to steer the cells in vivo with an external magnetic field.
A new study published in The Lancet Neurology found that therapeutic hypothermia reduces lesions and improves outcomes for infants starved of oxygen at birth. MRI scans predict with 80% accuracy the likelihood of death or disability by 18 months.
Meniscal tears in children can often be repaired successfully with appropriate treatment, with a high success rate of 75-90%. Early treatment is crucial to prevent complications and promote long-term health. Diagnosing meniscal tears requires simple physical exams and imaging tests, such as MRI, to accurately assess the injury.
Researchers found that patients are dissatisfied with the current system of receiving radiology test results, citing long delays and lack of detail. The study suggests that patients would prefer to have secure online access to their medical records, including detailed results, to improve their care experience.
Neurologists at the University at Buffalo are conducting a research study to test the possibility that chronic cerebrospinal venous insufficiency (CCSVI) is the underlying cause of multiple sclerosis. The study aims to evaluate the velocity of blood flow through brain vessels and extracranial veins using Doppler ultrasound.
A new study by Stanford University School of Medicine found that areas with high concentrations of magnetic resonance imaging machines are more likely to have patients undergoing back surgeries. The researchers correlated the number of MRI machines in an area with the likelihood of low-back pain patients receiving MRIs and subsequent s...
A new technique called Hyper-SAGE amplifies MRI signals by up to 10,000 times, allowing for the detection of low concentrations of cancers and other clinical targets. This breakthrough enhances the sensitivity of Magnetic Resonance Imaging (MRI) technology.
A new polymer has been developed that can deliver genetic cargo into cells and track its movement using luminescence and magnetic resonance imaging. This breakthrough could lead to more specific and targeted treatments for diseases such as cancer and cardiovascular disease.
A study found that despite electronic alert notifications, patients with abnormal imaging test results often do not receive timely follow-up care. This is particularly challenging due to the high volume of transitions between clinicians in outpatient care.
Researchers aim to improve prostate cancer identification using MRI technology. Powerful high-resolution MRI can reveal cancerous tissue and pinpoint its location.
Researchers have found a candidate quantum bit in diamond that can sense atomic-scale variations in magnetism, hinting at the possibility of MRI-like devices for probing individual drug molecules and living cells. This technology could sidestep the need for cooling, making it suitable for medical applications.
A large cohort study of 456,930 contrast doses found only 522 cases of adverse effects, most being mild and non-severe. The study suggests that contrast agents are safe to use and essential for diagnosis, with the advent of new agents improving their safety profile.
A small study of 101 patients found that a one-minute eye movement exam performed at the bedside worked better than an MRI to distinguish new strokes from other less serious disorders. The quick and low-cost test caught more strokes than the current gold standard, suggesting a way to improve care and avoid high costs.
Researchers found that the 'washout' curve type is most predictive of malignancy, with 45.7% of lesions with this pattern being malignant compared to 20% with a plateau and 13.3% with persistent enhancement. The study suggests that kinetic features in breast MRI assessment can help determine whether a lesion needs biopsying.
A new study found that women with newly diagnosed breast cancer who receive MRI scans are more likely to undergo mastectomy than breast conserving therapy. This can lead to delays in treatment and unnecessary surgeries.
A recent review suggests that using MRI before surgery to assess the extent of early breast cancer may not improve surgical planning or reduce follow-up surgeries. In fact, it could lead to more women being treated with mastectomy without evidence of improvement in outcomes.
Uterine fibroid embolization is a minimally invasive treatment that cuts off blood flow to painful fibroids, killing tumors and subsiding symptoms. This procedure can significantly decrease the hysterectomy rate in the United States, benefiting over 300,000 women annually.
Researchers at Tel Aviv University use Diffusion Imaging MRI to track memory changes and explore early detection of Alzheimer's disease. The study reveals that brain microstructure can change in mere hours, allowing for a quantifiable measure of individual brain plasticity.
High-field post-mortem MRI is a reliable option for examining human fetuses after death, providing good images and better image quality than conventional MRI. Traditional autopsy did not provide superior diagnostic accuracy compared to high-field MRI in some cases.
A study performed at Massachusetts General Hospital and Harvard Medical School found that MRI can evaluate beta cell mass and detect inflammation of the pancreas in patients with diabetes. This information can aid physicians in developing personalized treatment plans and achieving insulin independence for patients.
A new hybrid Linac-MR system has been developed to integrate medical linear accelerators and magnetic resonance imagers for treating certain types of cancer. The system promises to help doctors monitor moving tumors in real-time during radiation treatment, improving precision and reducing damage to surrounding healthy tissue.
Researchers at the University of Miami found that internal reinforcement with glass fiber reinforced polymer (GFRP) bars improves concrete column performance, allowing for limited use in harsh environments. The study's results provide a compelling case to modify existing design guidelines and allow for GFRP bar usage.
Patients with multiple sclerosis who smoke experience a more rapid progression of their disease, according to a report in the July issue of Archives of Neurology. Current smokers had significantly more severe disease at the beginning of the study and were more likely to have primary progressive MS.
A new study published in Radiology found that MRI can accurately diagnose deep endometriosis and locate lesions prior to surgery. The technique was effective in detecting the disease's extent and involvement of surrounding organs, such as the colon and bladder.
A new MRI technique developed by UW-Madison researchers has the potential to reduce breast biopsies in high-risk women. The technology allows radiologists to visually identify cancerous lesions based on characteristics such as shape and smoothness of edges. This could lead to fewer unnecessary biopsies and improved patient outcomes.
A study of 577 breast cancer patients found that routine use of MRI scans was associated with delays in starting treatment and increased mastectomy rates. The study suggests that more research is needed to determine the benefits of MRI scans in evaluating breast cancer, as their disadvantages may outweigh any potential advantages.
Researchers have developed a new fully integrated PET/MRI system that can provide whole-body images of rats and small animals. The system offers significant improvements in imaging capabilities, enabling increased understanding of disease characteristics and physiological processes.
Researchers at SNM's 56th Annual Meeting present a prototype breast imaging system combining positron emission tomography (PET) and magnetic resonance imaging (MRI) technologies. The system aims to provide highly sensitive and specific breast cancer examinations while compensating for the shortcomings of individual PET or MRI systems.