Articles tagged with Magnetic Resonance Imaging
A new noninvasive imaging test, sestamibi SPECT/CT, has been shown to accurately rule out kidney cancers. The test adds diagnostic information to conventional CT and MRI scans, improving physicians' ability to differentiate between benign and malignant tumors.
A collaboration created a 3D-printed phantom of a stenotic intracranial artery to standardize high-resolution MRI protocols for studying intracranial atherosclerotic disease. The phantom enables standardized vessel-wall MRI at multiple sites, facilitating multicenter trials and accelerating research.
Researchers at Duke University have created two new magnetic materials using high-throughput computational models. The success marks a new era for the large-scale design of new magnetic materials, with potential applications in motors, MRI machines and beyond.
Researchers have used machine learning to analyze brain imaging data and identify patterns predictive of depression. The study found that DTI-derived fractional anisotropy maps can accurately classify depressed or vulnerable individuals versus healthy controls.
Researchers at ICFO have developed a new method to measure atomic spin angle and amplitude with unprecedented precision, evading the Heisenberg uncertainty principle. This breakthrough allows for more accurate measurements of atomic spins, opening the door to the development of far more sensitive instruments.
The first issue of Volume 2 of Cardiovascular Innovations and Applications (CVIA) has been published with a Special Issue on Imaging. The issue brings together contributions from leading cardiologists and features recent advances in noninvasive cardiac imaging, as well as clinical applications and future directions.
A study found that nearly a quarter of older patients developing new microbleeds after transcatheter aortic valve replacement (TAVR) experience cognitive decline. Microbleeds are detrimental to thinking and memory, and factors associated with increased risk include previous cardiovascular intervention and prolonged anticoagulant exposure.
A study of children with untreated sleep apnea found significant reductions in gray matter, particularly in regions related to movement, memory, and emotions. The findings suggest that early detection and therapy are crucial for preventing long-term brain damage and cognitive deficits.
Researchers at Australian National University have designed a portable device that uses MRI and mass spectrometry to analyze objects. The device, inspired by science fiction tools like the sonic screwdriver and tricorder, could revolutionize laboratory work and medical research.
A study published in Health Communications shows that women at high risk for breast cancer who received a letter informing them of their options for additional imaging with contrast-enhanced MRI were more likely to return for additional screening. The researchers found that direct communication increased follow-up screening rates among...
Researchers are developing control algorithms and imaging technology to harness MRI power for millimeter-sized robots to navigate the body's venous system. The goal is to use large numbers of mini-robots to target specific lesions, delivering chemotherapy or interventions.
A new study has demonstrated that patients with non-MRI-conditional pacemakers and defibrillators can undergo MRI at 1.5 tesla without harm when screened and monitored according to the MagnaSafe protocol. The researchers observed no device failures or cardiac arrhythmias in 1,500 patients.
A new study from Germany found that MRI screening improved early diagnosis of breast cancer in women with an average risk of developing the disease. The study detected 60 additional cancers, including 40 invasive cancers, for an overall supplemental cancer detection rate of 15.5 per 1,000 women.
Researchers develop a pipeline to power fast and accurate image processing for precision medicine. The platform combines the imaging capabilities of Philips MRI scanners with the processing power of Stampede supercomputer.
Researchers have developed new iron oxide nanoparticles with zwitterion coating that can produce similar MRI contrast to gadolinium-based agents without the risk of adverse effects. The particles are water-soluble, compact and biocompatible, making them a potential safer substitute for current contrast agents.
Researchers developed a new platform to switch MRI signals ON only in the presence of targeted diseases. The Nano MRI Lamp uses Magnetic Resonance Tuning (MRET) to control signal strength based on distance between magnetic materials.
Researchers found consistent differences in prostate shape and transitional zone between men with and without prostate cancer. The findings suggest a potential biomarker for disease diagnosis and aggressiveness.
Researchers at the University of Missouri developed new software TREND that can analyze series of images much faster and more accurately than ever before. This software resolves and tracks changes among images, enabling quicker analysis of complex data.
Researchers discovered a reduction in brain tissue and increased fluid accumulation in the upper brain of Zika-infected fetuses. The study, which included 7 cases, found a significant difference in total brain volume and intracranial volume between Zika-exposed fetuses and healthy controls.
Researchers at the University of Illinois have developed a piglet model to study nutrition's effects on infant brain development and behavior. The new review article highlights several studies on pediatric nutrition, including those that assess brain development outcomes using advanced MRI methods.
Recent preclinical research suggests microinfarcts can induce prolonged dysfunction in brain areas estimated 12-times larger than the visible injury site, contributing to cognitive decline and dementia. The study used a mouse model to examine the effects of individual cortical microinfarcts on surrounding tissue function in vivo.
A recent study published in Neurology found that adhering to a Mediterranean diet can help maintain brain volume in older adults. The study, which followed 967 Scottish people aged 70 for three years, revealed that those who followed the diet more closely retained more brain volume than those who did not.
Researchers at Caltech have developed a method to link magnetic resonance imaging signals to gene expression in cells, allowing for non-invasive monitoring of disease. The technique uses aquaporin reporter genes to visualize gene expression in living tissues, with potential clinical translation.
Research reveals that endurance running alters brain structure and function in ways similar to complex tasks like playing a musical instrument. The study found greater functional connectivity in the brains of young adult cross country runners compared to sedentary individuals.
Researchers at UC San Diego developed a non-invasive method to detect infections in prostheses using an improved version of electrical capacitance tomography and a thin-film sensor that can detect changes in pH levels. The new method could provide quantitative diagnostic information about the extent and locations of infections.
A study published in The Lancet found that adding an MRI scan after a 20-week ultrasound scan can increase the accuracy of diagnosing fetal brain abnormalities, with almost all scans being correct. This extra information helps doctors give more accurate diagnoses and advice to parents.
MR urography (MRU) offers an alternative to CT urography (CTU) for whole urinary tract imaging. However, proper technique is crucial, with steps needed to ensure adequate distention and visualization of the entire system.
Researchers have shown that macrocyclic MRI contrast agents may reduce the risk of gadolinium brain deposition, a concern for patients with multiple sclerosis. Macrocyclic agents were found to minimize deposits in the cerebellum, whereas linear agents posed a higher risk.
Researchers found that high-resolution brain scans using magnetoencephalography (MEG) can detect concussions more accurately than traditional methods like MRI or CT scans. MEG measures changes in brain communication between areas, allowing for earlier diagnosis and potentially improved treatment and recovery processes.
Researchers used MRI measurements to detect higher levels of oxidative stress in patients with schizophrenia compared to healthy individuals and those with bipolar disorder. The study suggests that oxidation imbalance may contribute to the development and progression of schizophrenia.
A panel of urologists and radiologists recommends using prostate MRI and MRI targeted biopsy for patients with suspected prostate cancer despite a prior negative biopsy. The recommended guidelines aim to improve detection rates, accuracy, and treatment options for these patients.
Researchers create new sensors that detect proteins and induce blood flow changes, allowing for non-radiative imaging of molecules in the brain. This approach enables detection of biologically low-level molecules and monitoring of dynamic processes in the brain.
Researchers developed a high-precision sensor to measure small variations in strong magnetic fields, enabling the detection of mechanical processes in the body. The technique has broad applications in medicine and biological research, including the development of new contrast agents for MRI.
A world-first MRI study has investigated the heart function of kidney patients undergoing dialysis treatment, revealing significant cardiovascular effects with both standard haemodialysis and hemodiafiltration. Both treatments caused falls in cardiac performance, with partial recovery after dialysis, highlighting the need for intervent...
Adults with MCI who exercised four times a week experienced an increase in brain volume, particularly in gray matter regions. Aerobic exercise also improved executive function compared to stretching exercises.
Researchers used whole-brain MRI mapping to reveal pathological alterations in brain iron distribution. They found excess iron in areas like the substantia nigra and decreased iron content in previously overlooked regions, such as the dentate nucleus.
Three new studies provide insight into the effects of Zika virus on congenital brain damage in babies and adults with neurological disorders. The research highlights common CT brain findings, including decreased brain volume and calcifications, as well as MRI findings such as orbital injuries and anatomical changes in brain tissue.
A new imaging technique has confirmed that each person's brain structure is unique, allowing for nearly perfect identification. The study also shows the brain's unique pattern changes over time.
A noninvasive Magnetic Resonance Imaging (MRI) method has been proposed to detect bone marrow cancer, potentially changing the way this disease is diagnosed. The researchers used T2-weighted MRI to identify a pre-fibrotic state of the disease with a clear bright signal.
A new study has identified a group of brain structural networks linked to loss of cognitive function, highlighting the importance of cerebral small vessel disease. The research found that certain networks are less affected by age, while others show decreased expression and correlation with impaired cognitive functioning.
The SENTINEL trial found that the Sentinel device was safe during TAVR but did not meet its primary efficacy endpoint of reducing median new lesion volume on MRI. Despite this, embolic protection resulted in a reduction of new lesion volume after adjusting for confounders.
A study using MRI found significant structural differences in the brains of children with PTSD compared to those without. The findings suggest a shift towards a more localized network structure, which may be a target for future treatments. This research could help develop new interventions for pediatric PTSD.
A comprehensive rat brain atlas has been created to guide stereotaxic surgery procedures, combining high-resolution MRI images with histological sections. The atlas features a standardized reference grid and precise coordinates, enabling accurate targeting of surgical targets.
Researchers at UVA have created a new imaging method that combines the advantages of MRI and gamma-ray imaging, enabling high-resolution medical diagnostics with minimal tracer material. The technique uses radioactive xenon isotopes to produce images with increased sensitivity and diagnostic power.
The University of Melbourne team created a quantum molecular microscope to image individual atoms in bio-molecules, overcoming issues with conventional biomolecule imaging. The system uses atomic-sized qubits as highly sensitive quantum sensors to capture high-resolution images.
A new imaging technique can predict who is most at risk for stroke due to atrial fibrillation. The technique, called 'atrial 4D flow CMR,' detects blood flow velocity and can help reduce over-treatment of patients.
GuidaBot is developing a robotic system that enables doctors to perform biopsies while the patient remains within an MRI machine, allowing for faster and more precise procedures. The company has received a $225,000 grant from the National Science Foundation to support ongoing research and testing of prototype systems.
Chemists have created a new technique to yield highly detailed, three-dimensional images of battery interiors. This approach uses magnetic resonance imaging (MRI) to monitor the condition of batteries in real time, potentially leading to more efficient and safer power sources.
Researchers used the DecNef technique to associate neutral faces with positive or negative feelings in volunteers, resulting in changes in facial preferences. The study suggests that the cingulate cortex is involved in handling both sides of emotion, leading to significant changes in ratings for faces rated as positive or negative.
A study by the American Academy of Orthopaedic Surgeons found that X-rays are the most effective diagnostic tool for knee pain in middle-aged patients. The study suggests that weight-bearing X-rays should be obtained before an MRI to screen for knee pain, as they can often provide enough information for a diagnosis and treatment plan.
A new scanning technique produces extremely high-res 3D images of bones without exposing patients to X-ray radiation. The technique uses biologically safe nanoagents that target calcium-rich surfaces in damaged bones, providing detailed blueprints of weakness or injury.
Exposure to MRI during the first trimester was not associated with increased risk of harm to the fetus or congenital anomalies. However, gadolinium-enhanced MRI was linked to a broad set of rheumatological and inflammatory conditions in early childhood.
A new study published in JAMA found that performing an MRI on a woman in the early part of pregnancy does not increase the risk of stillbirth, death after birth, or birth defects. The study also found no association between first-trimester MRIs and vision loss, hearing loss, or cancer in children's first four years.
A new study found a correlation between microscopic brain damage and impaired cognitive performance in patients with symptomatic carotid artery disease. The researchers used diffusion tensor imaging to assess white matter tract skeleton mean diffusivity, which showed the closest correlation with cognitive impairment.
A study by researchers at four US medical centers found that common conditions are frequently misdiagnosed as multiple sclerosis, leading patients to receive unnecessary treatment. The study identified five primary diagnoses that mimic MS symptoms, resulting in long-term misdiagnosis for some patients.
Researchers at UCLA have discovered that MRI scans can detect the shrinkage of key brain regions in individuals with cognitive problems, similar to those seen in CTE cases confirmed by autopsy. This finding raises the possibility of using MRI scans to diagnose CTE in living patients.
Researchers at UT Southwestern Medical Center developed a novel MRI method that can detect low levels of zinc ions to differentiate between healthy and malignant prostate tissue. This technique has the potential to serve as a biomarker for tracking prostate cancer progression.
Researchers at the University of California San Diego have developed a non-invasive MRI technique that measures liver fat density with high accuracy. This method corresponds to histological responses in patients with nonalcoholic steatohepatitis and shows promise for future clinical trials and treatment.
A new MRI technique, Plug-and-Play MR Fingerprinting (PnP-MRF), has been developed to eliminate artifacts and create high-quality images. This innovation enables accurate diagnoses and reveals disease patterns that are consistent from patient to patient, promising superior imaging with less expensive machines.
A new cerebral protection device has been shown to reduce the number and volume of brain lesions in high-risk patients undergoing transcatheter aortic valve implantation. The study found significant reductions in brain damage and adverse events, but calls for further research to assess long-term effects.