Articles tagged with Magnetic Resonance Imaging
Brainwide association studies need thousands of individuals to yield higher reproducibility, as smaller samples often uncover strong but spurious associations. Larger sample sizes lead to more likely reproductions of correlations, with effect sizes decreasing as the number of participants increases.
Researchers at Kaunas University of Technology improved an algorithm to detect Alzheimer's disease from MRI images, achieving over 98% accuracy. The new model uses a modified neural network and adapts to variations in data, such as differences in hospital equipment and patient positions.
A new study finds that the brain estimates controllability through competition between two parallel learning processes: the actor and the spectator. High levels of stress and anxiety impair people's sense of control, making them believe their actions don't matter.
A multicenter study found relatively high interobserver agreement for chronic pancreatitis findings in children using both CT and MRI. However, subjective findings like atrophy showed moderate agreement, emphasizing the need for standardized criteria.
A study of nearly 40,000 Medicare beneficiaries found racial disparities in the use of MRI among Black and white patients with new prostate cancer diagnoses. The study identified factors such as insurance coverage, socioeconomic status, and geographic location that contribute to these disparities.
A multicenter study validates the accuracy and reliability of NS-RADS for classifying and grading peripheral neuropathies, with high interrater agreement across different reader experience levels. The study shows promising results for routine practice, suggesting NS-RADS as a standardized guideline for reporting peripheral neuropathies.
Researchers developed a new imaging approach called VascuViz to visualize blood vessels at different spatial scales. The method enables detailed mathematical models and complementary images to clarify the role of blood flow in health and disease, advancing our understanding of tissues throughout the body.
Researchers developed a new deep learning algorithm that allows for real-time reconstruction of images combining optical and magnetic resonance imaging data. The algorithm, Z-Net, enables faster image generation and can be trained with simulated data, improving breast cancer detection.
Researchers at MUSC and University of Florida successfully visualize the complete human brain lymphatic system in living humans using a new non-invasive MRI technique. This breakthrough enhances our understanding of brain function and may provide insights into neurodegenerative diseases such as Alzheimer's.
Researchers developed a deep learning framework that can accurately flag abnormalities in routine head MRI scans, prioritizing resources for critical cases. The model reduced wait times for reports from 28 days to 14 days and from 9 days to 5 days, enabling real-time applications.
Annual MRI screenings starting at ages 30-35 may reduce breast-cancer mortality by more than 50% among women who carry certain genetic changes in three genes. The predictions involve pathogenic variants in ATM, CHEK2 and PALB2 genes – which collectively are as prevalent as the much-reported BRCA1/2 gene mutations.
The American Roentgen Ray Society recognizes Drs. Nguyen, Beheshtian, Harfouch, and Hashiba for their outstanding research and education contributions to the field of radiology. The awards honor the candidates' scientific merit and potential impact on imaging and allied sciences research.
A new wearable magnetic metamaterial helmet can create better brain scans by boosting MRI performance. It fits over a person's head during a brain scan, creating crisper images that can be captured at twice the normal speed.
The American Roentgen Ray Society has awarded two 2022 ARRS Scholarships to Sean Woolen and Bradley Allen, providing a total of $180,000 in funding for their radiological research projects. The scholarships aim to advance emerging scholars and prepare them for leadership positions.
Researchers discovered that toxic goiter causes shrinkage in central brain regions, such as the hippocampus and amygdala, which can lead to mental symptoms. The study provides key insights for patients with Graves' disease, a common form of hyperthyroidism.
Researchers at Johns Hopkins Medicine found that certain stem cells have built-in tracers made of sugars that can track their movement in living tissues. The discovery could streamline and advance restorative research for diseases of the brain.
HKU Electrical and Electronic Engineering researchers have successfully developed a new magnetic resonance imaging (MRI) technology that can operate from a standard AC wall power outlet, removing the need for radiofrequency shielding. The ultralow field (ULF) 0.055 Tesla brain MRI scanner is estimated to be only a fraction of the cost ...
Studies using magnetic resonance imaging found a correlation between decreased blood flow in specific brain areas and tinnitus severity. Researchers at the University of Illinois Urbana-Champaign explored these links to better understand the causes of tinnitus.
Dr. Edward Y. Lee, MD, MPH, receives the highest distinction from North America's first radiological society for his contributions to pediatric thoracic imaging and education. The ARRS Gold Medal honors his tireless efforts to advance radiology globally.
Scientists at University College London have developed a novel cancer therapy using magnetic seeds guided by an MRI scanner to heat and destroy tumours. The therapy, called MINIMA, has the potential to precisely treat hard-to-reach cancers with minimal side effects.
A novel blood test, Stockholm3, in combination with MRI reduces overdiagnosis of low-risk cancers by 60% and unnecessary biopsies by 9%. This cost-effective approach is recommended for Sweden's organized prostate cancer testing (OPT) pilot projects.
Boyce's research aims to develop MRI techniques to characterize the interior of flow systems in 3D, leading to revolutionized technologies in sustainable mining and hydrogen-powered vehicles. He plans to use visualizations to inspire middle- and high-school students from Harlem and the Bronx to pursue STEM studies.
Samuel Galgano and Pankaj Gupta have been named the 2022 Melvin M. Figley Fellow in Radiology Journalism and the 2022 Lee F. Rogers International Fellow in Radiology Journalism, respectively. They will attend the 2022 ARRS Annual Meeting and participate in the Editor’s Forum.
A UCLA-led study found that aducanumab's ancillary care services, such as MRIs and neurologist visits, account for nearly 20% of total Medicare costs. The estimated annual spending on the drug could increase Medicare premiums.
A prospective observational study found that preoperative shear wave elastography (SWE) can predict successful rotator cuff repair. SWE-derived elasticity was higher in patients with insufficient repair, and the elasticity ratio independently predicted insufficient repair.
A new MRI technique has been developed to detect changes in multiple sclerosis (MS) at an earlier stage. This technique, proton MR spectroscopy with a 7-tesla magnet, can visualize brain changes that appear normal on conventional MRI scans.
Regular aerobic exercise has been shown to strengthen brain networks between spared regions, improve grey-matter volume, and enhance movement control in individuals with Parkinson's disease. The study published in Annals of Neurology suggests that exercise can stimulate compensatory capacity in the brain, leading to reduced symptoms.
A green Mediterranean diet rich in polyphenols and low in red and processed meat may slow age-related brain atrophy. The DIRECT PLUS 18-month trial found significant attenuation of brain atrophy among participants who adhered to both diets.
A retrospective study found that whole-spine MRI commonly demonstrates isolated thoracolumbar injuries in children with suspected abusive head trauma. The study included 256 children who underwent whole-spine MRI as part of their evaluation, revealing that 23% of examinations showed injuries localized to the thoracolumbar spine.
New research published in JNeurosci reveals that impaired cognition can be part of normal aging, rather than an early sign of Alzheimer's. Cognitively frail adults showed brain structure and activity similar to healthy controls, suggesting lifestyle factors like physical activity and education may play a role.
Researchers at Beckman Institute have defined a mathematical framework for identifying hallucinations in biomedical images. This framework will enable researchers and radiologists to quantitatively assess their image reconstruction methods and prevent patient misdiagnosis.
Automated brain volumetry in memory-impaired patients shows significant differences and systematic biases between conventional and ultrafast 3D T1-weighted MRI sequences. Most regions demonstrated substantial agreement but also significantly different mean values and consistent biases.
A study by Indiana University School of Medicine researchers suggests that reperfusion therapy may not be as effective in halting muscle damage during heart attacks as previously thought. The team's findings indicate that internal bleeding within the heart muscle can continue to cause damage even after the blocked coronary artery is op...
A recent study published by Queen Mary University of London has found that certain risk factors for heart disease are linked to changes in the structure and appearance of the heart. The research analyzed images from over 30,000 people's heart MRI scans using a new imaging toolkit called radiomics.
A recent study published in the Journal of the American College of Cardiology found that fetal MRI can detect at least one other abnormality in almost 57% of fetuses with heart defects. Additionally, approximately a quarter of all fetuses had structural brain abnormalities, regardless of the severity of the heart defect.
Researchers at Nagoya University developed a scalable method to produce high-temperature superconductors with artificial pinning centers, improving their properties. The technique, known as grain boundary engineering, can help develop stronger, inexpensive, and high operating temperature superconductors.
A team of researchers at Duke University found that surprise can disrupt the stability of patterns in the hippocampus, leading to more false memories. This study has implications for understanding learning and memory, as well as how people recall events and faces.
Lesions in white matter carry messages between neurons, damaging it and leading to cognitive deficits. Researchers found that strain on ventricular walls explains where lesions develop in the aging brain.
Scientists have found age rings in Marimo, indicating their growth rate and annual growth of up to 9mm. The study also shows how the algae balls recycle nutrients through a small-scale nutrient cycle, with exchanges occurring every 105 hours.
A prospective study found that MRI outperformed conventional tests and FDG PET/CT for various staging endpoints in SCLC. Whole-body MRI and FDG PET/MRI were more accurate than FDG PET/CT for assessing local invasion extent.
Researchers at Massachusetts General Hospital have developed a method to detect early signs of tumor cell death using MRI and AI, allowing for non-invasive monitoring of cancer treatment. This approach has shown promise in detecting treatment-responsive regions in mouse brain tumors and healthy human brains.
Researchers at the University of Toronto have demonstrated that listening to personally meaningful music induces beneficial brain plasticity in patients with mild cognitive impairment or early Alzheimer's disease. The study showed changes in neural pathways correlated with increased memory performance on neuropsychological tests, suppo...
A recent study found that Black, Hispanic, and Asian men are less likely to receive an MRI exam after a prostate-specific antigen (PSA) blood test. The study suggests racial and ethnic disparities in the use of prostate MRIs following elevated PSA results.
Researchers at Skoltech propose a method for interpreting brain activity data that is up to five times more accurate than the conventional technique. This method can help treat drug-resistant epilepsy and understand cognitive processes in the healthy brain.
A recent study published in the American Journal of Roentgenology found a link between COVID-19 mRNA vaccination and myocarditis in adolescent males. Cardiac MRI was used to assess suspected myocarditis post-vaccination, with late gadolinium enhancement persisting in two patients undergoing repeat MRI.
A multi-center study demonstrated improved overall survival and quality of life for inoperable pancreatic cancer patients treated with MRIdian SMART, with a median survival of 26 months. The treatment showed low rates of major adverse events and was more effective than standard radiation therapy.
A pilot study examines graph-theoretical properties of brain networks in traumatic brain injury and controls, showing association with balance impairment and structural damage. The study uses EEG-based functional connectivity measures during a balance perturbation task to explore underlying neural mechanisms.
Researchers have identified that moment-to-moment brain signal variability can reliably predict the effectiveness of cognitive behavioural therapy for patients with social anxiety disorder. This finding suggests that neural variability may be a reliable indicator of individual differences in treatment response, particularly when using ...
A multicenter study found cardiovascular magnetic resonance imaging to be highly accurate in diagnosing and excluding cardiac tumors. The results show that CMR provides prognostic value beyond clinical factors.
The researchers will develop techniques to analyze the joint growth of the brain and cranium using MRI scans, helping clinicians better assess and diagnose developmental disorders. The project has the potential to provide invaluable insights into healthy child development, enabling early detection and effective treatment.
Researchers found that early accumulation of tau proteins in the brain, measured by PET scanner, is more effective at predicting memory impairment than other biomarkers. The study suggests that tau PET should be recommended for clinical prognostic assessment of cognitive decline in Alzheimer's patients.
A new imaging technique using PET/MR and a PET tracer directed against CXCR4 shows high accuracy in detecting MALT lymphomas of the stomach, potentially reducing the need for repeated gastroscopies. The study found that [68Ga]Pentixafor PET/MR achieved 97% accuracy in detecting tumours compared to gastroscopy.
New guidelines aim to standardize interpretation of MRI scans in patients with pelvic floor disorders, promoting shared understanding among professionals. The consensus statement provides definitions and templates for diagnosing conditions such as incontinence, constipation, and prolapse.
Scientists developed a machine learning method to analyze NMR data, allowing faster and more accurate analysis of proteins and chemical reactions in the human body. The method uses an artificial deep neural network to separate and analyze complex data, resulting in highly reproducible results comparable to human experts.
Researchers at Rice University have refined models to analyze gadolinium-based contrast agents, which are used in 40% of MRIs worldwide. The team's goal is to design better and more customizable contrast agents that improve image quality while minimizing risks.
A multidisciplinary organization has reached consensus on guidelines for performing, interpreting, and reporting MR defecography. The consensus templates aim to standardize care for patients with evacuation disorders of the pelvic floor.
Research reveals that lupus patients with higher white matter free water have more severe cognitive dysfunction, related to increased cumulative dosage of medical steroids. The study suggests that reducing steroid dosage may alleviate cognitive decline in SLE patients.
Patients with bipolar disorder experiencing manic episodes show abnormal brain changes, including faster cortical thinning, compared to those without episodes. The study also found associations between brain ventricle enlargement and accelerated cognitive decline in bipolar patients.
A team of neuroscientists at the Beckman Institute developed safety standards for multiband EEG-fMRI imaging, reducing heating risks and maintaining data quality. By establishing protocols to mitigate artifacts, they enabled the use of accelerated fMRI sequences with EEG recordings.
Researchers at Vanderbilt University Medical Center developed a standardized MRI protocol for pancreatic imaging, enabling reproducible measurements across different MRI hardware and software. The study demonstrates potential for incorporating MRI into multisite clinical trials, advancing diabetes research and treatment.