Articles tagged with Gadolinium
The researchers developed a novel approach to virtual contrast enhancement in MRI imaging, using pixelwise gradient methods with Generative Adversarial Networks. The model excelled in capturing intricate details and textures, outperforming its predecessor in texture representation.
Researchers have found that oxalic acid can generate nanoparticles of the toxic metal gadolinium in human tissues, which has been associated with serious health problems such as nephrogenic systemic fibrosis. This discovery may lead to a possible way to mitigate some of the risks associated with MRI scans.
Researchers have acquired direct evidence of rare, pulsing pear-shaped structures in the nucleus of Gadolinium-150, a long-lived radioactive isotope. The study provides definitive proof of a strong collective 'octupole excitation' and opens a new window into the quantum world.
Researchers at Tohoku University found that incorporating gadolinium into iron-doped nickel oxide markedly enhances oxygen evolution reaction activity. Gd-doping reduces theoretical overpotentials and demonstrates favorable kinematics, leading to remarkable long-term stability and robust performance in water electrolysis.
Researchers discovered diamond dust's signal-enhancing properties, outperforming gadolinium. Diamond nanoparticles stay in blood vessels and shine brightly in MRI, without leaking into healthy tissue.
Researchers found that gadolinium nanoparticles from MRI contrast agents can infiltrate kidney cells, causing severe side effects like nephrogenic systemic fibrosis. The study used electron microscopy to detect tiny deposits of gadolinium in the kidneys of people who had been injected with contrast agents prior to their MRIs.
A Rice-led team developed molecular simulations that reveal distinct differences in how inner and outer shells of water molecules around gadolinium respond to thermal excitation. Temperature affects the self-diffusivity of molecules, influencing relaxation rates in MRI scans.
A multicenter study found that left ventricular global longitudinal strain is a significant independent predictor of all-cause mortality and/or heart-failure hospitalization in patients with ischemic or nonischemic dilated cardiomyopathy. The study used cardiac MRI feature tracking to calculate six myocardial strain parameters.
Researchers at the University of Konstanz developed a novel MRI contrast agent using prenucleation clusters of calcium carbonate, achieving three to four times higher contrast than commercial agents. The agent is produced easily, cheaply, and has no toxic properties.
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.
The study reveals that the interaction between phonons and electrons is crucial for ultrafast demagnetization. The data show a temperature threshold below which this mechanism does not occur, indicating another microscopic mechanism at lower temperatures.
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.
Researchers found that ribociclib achieved pharmacologically-relevant concentrations in tumor tissue, while everolimus showed minimal penetration. The combination is promising for brain cancer treatment and could lead to new therapeutic drug combinations.
Researchers developed a manganese-based contrast agent that is diagnostically equivalent to gadolinium-based contrast agents but without the toxicity, offering a safer alternative for patients with chronic kidney disease. The new agent, Mn-PyC3A, is rapidly and completely eliminated from the body and does not accumulate in tissues.
Researchers found elevated levels of gadolinium in Tokyo river water, particularly near treatment plants, highlighting the need for new policies and removal technologies as MRI become more widespread.
A team of researchers has created a novel organic and biodegradable compound for MRI contrast agents, eliminating the need for heavy metals like gadolinium. The new agent is developed by attaching an organic radical contrast agent to a plant virus and wrapping it in a protective chemical cage.
Scientists at Berkeley Lab developed a tool to harness atomic flaws in diamonds to create ultrasensitive sensors for measuring electric and magnetic fields. They successfully measured phase transitions and pressure-induced phase changes, opening up new avenues for materials research.
Researchers at University of Warwick have developed a new 3D MRI computing technique that can detect scar muscles in the heart without using gadolinium, which can damage kidneys. This technique reduces stress for patients undergoing MRI scans and provides more precise diagnoses, enabling earlier treatment for heart diseases.
A small number of pregnant women are exposed to gadolinium-based contrast agents (GBCAs) before recognition of pregnancy, according to a recent study. The researchers suggest implementing pregnancy screening measures and safety protocols to reduce inadvertent exposures.
Researchers at MGH develop a new, possibly safer contrast agent for MRI exams using a manganese-based compound that provides comparable tumor contrast enhancement to state-of-the-art gadolinium-based agents. The new agent is designed to be more quickly and thoroughly cleared from the body, reducing concerns about long-term safety.
A Belgian team developed a two-in-one contrast agent for medical imaging, combining MRI and photoacoustic imaging techniques. The bimodal probe enhances sensitivity while minimizing risks for patients.
A comprehensive study of MS patients found that gadolinium deposition occurs early in the disease, but does not have a clinical impact. However, male patients showed more deposition than female patients, which may be related to dosage based on weight.
In a study published in Physical Review Letters, researchers reveal that repulsive interactions between Cooper pairs themselves hold them in check in insulating materials. This finding could lead to new manipulation methods for superconducting devices and the design of novel electronic components.
Researchers used AI to analyze imaging data from patients who underwent contrast-enhanced MRI exams and found that low-dose images yielded significant information, suggesting a potential method to reduce gadolinium dose. The study's findings demonstrate the algorithm's ability to approximate full-dose images without contrast agent use.
Rice University scientists create iron-based TI contrast agent that outperforms gadolinium chelates, improving T1 MRI contrast performance by two-fold. The study demonstrates a method to load iron into nanoparticles, offering a safer and more effective alternative for radiologists.
Researchers have developed a way to control spin transport in networks of the smallest electrical conductor known to man. By attaching nano-particles of gadolinium to carbon nanotubes, they increased electrical conductivity and demonstrated the Spin Valve Effect, which can enhance electron transfer in devices.
Research by Children's Hospital Los Angeles reveals that gadolinium deposition in the brain is associated with brain tumors and radiation treatment, rather than the amount of contrast agent administered. The study's findings challenge previous assumptions about the dose-dependent nature of gadolinium deposition.
Researchers at Ames Laboratory have developed a CaloriSMART test system that demonstrates sustained cooling power of about 10 watts, with a 15 degree Celsius gradient, using only three cubic centimeters of gadolinium. The system enables rapid evaluation of materials in regenerators without significant investment.
A study published in Neurology suggests that strokes can compromise the blood-ocular barrier, causing gadolinium to leak into the eye. This phenomenon could potentially provide valuable information about stroke severity and guide treatment.
A new study presented at the Radiological Society of North America meeting found no link between gadolinium accumulation in the brain and cognitive decline. The study involved 4,261 participants who received MRI scans with gadolinium-based contrast agents, but showed no significant predictor of cognitive decline or dementia.
Researchers at Case Western Reserve University have developed a new MRI contrast agent that can pinpoint breast cancers at early stages and distinguish between aggressive and slow-growing types. The agent is more efficient, safer, and easier to flush from the body than traditional agents.
Researchers recommend reevaluating the need for contrast agents in MRI scans to minimize brain accumulation and potential health risks. Emerging evidence suggests that small amounts of gadolinium deposit in certain brain areas after repeated use, but the scientific community agrees that the current benefits outweigh these risks.
Researchers developed a metal-free contrast agent containing organic molecules called nitroxides, which can accumulate at tumor sites for extended periods without causing harm. The new agent has improved MRI relaxivity and stability, making it suitable for long-term imaging of tumors in cancer patients.
Research reveals dose-dependent gadolinium deposits in normal brain tissue of patients who underwent MRI with contrast agents, suggesting a widespread issue. The study's findings contradict previous assumptions about the blood-brain barrier's impermeability to gadolinium.
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.
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.
Scientists at the University of Basel have created nanoparticles that can serve as efficient contrast agents for magnetic resonance imaging (MRI). These smart nanoparticles produce significantly more contrast than traditional contrast agents and respond to specific environments.
A large-scale study of 246,557 patients found no significant association between gadolinium exposure and parkinsonism, a degenerative disorder of the central nervous system. Researchers observed a similar incidence of incident parkinsonism among those exposed to gadolinium-enhanced MRIs as those who received non-gadolinium-enhanced MRIs.
Researchers from MedInsight Research Institute analyze studies detailing gadolinium toxicity mechanisms, contradicting the longstanding belief that patients with normal kidney function are not at risk. The study calls for FDA action to address the gap in scientific knowledge about treatment for gadolinium toxicity.
Researchers at University of Oxford have developed a new technique that uses T1 mapping to create pixel-by-pixel maps of the heart without injections, improving detail and reducing subjectivity. This technology has the potential to help diagnose heart conditions in patients with severe kidney failure.
Researchers at Uppsala University have successfully broken the strong magnetic coupling between spin moments in an atom, enabling ultrafast manipulation of magnetic materials. This breakthrough opens up new opportunities for data storage and computing applications.
A study highlights a significant safety concern with linear gadolinium-based contrast agents (GBCAs), which can lead to brain gadolinium deposits in patients. The researchers found that repeated use of these agents causes persistent MRI abnormalities and high total gadolinium concentrations in the deep brain, highlighting the need for ...
Researchers identified patients who donated their body to medical research and had undergone multiple MRI exams. Brain tissue samples showed measurable quantities of gadolinium deposited in the brain tissue of exposed patients, but no specific symptoms or diseases were linked to this finding.
Researchers at the University of Illinois have designed a new nanoparticle that combines weak chemical forces to improve MRI imaging. The innovation, inspired by cell membranes, has led to clearer images and paved the way for better diagnostic tools.
A new study has confirmed an association between a gadolinium-based MRI contrast agent and abnormal brain tissue signals. The research suggests that the toxic component of the contrast agent may remain in the body for extended periods.
Researchers at Ohio State University have developed a new kind of ultraviolet LED that emits light at specific wavelengths, making it suitable for commercial applications such as chemical detection, disinfection, and UV curing. The device runs on lower voltages than existing methods, making it more compact and potentially cost-effective.
Researchers at Georgia Tech develop Nano-photonic Composite Scintillation Detector to enhance radiation detection effectiveness and reduce cost. The detector combines rare-earth elements with nanotechnology techniques for improved sensitivity, accuracy, and robustness.
A recent study has found that gadolinium-based contrast agents alone are not sufficient to cause nephrogenic systemic fibrosis (NSF) in patients with kidney problems. Despite high doses, these agents did not trigger NSF, suggesting that other factors may be necessary for the disease to develop.
Researchers developed nanobialys, spherical particles that can deliver drugs and imaging agents directly to tumors and plaques. The manganese-based nanoparticles are safer than gadolinium-containing particles and have shown promise in animal studies.
A new study published in Arthritis & Rheumatism found that patients with kidney failure who develop nephrogenic systemic fibrosis (NSF) have a significantly higher risk of dying. Gadolinium exposure is identified as a significant risk factor for developing NSF.
Researchers found that an enzyme called transglutaminase-2 (TG2) may be involved in the development of nephrogenic systemic fibrosis (NSF), a rare tightening and swelling of the skin and organs. The study suggests a potential strategy for preventing or treating NSF using drugs that inhibit TG-2 activation.
Researchers at Argonne National Laboratory discovered a giant magnetocaloric effect in gadolinium-silicon-germanium alloys, which could lead to environmentally friendly magnetic refrigeration systems. The discovery reveals the role of non-magnetic germanium ions in enhancing magnetic interactions.
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 have developed tiny carriers, called gadolinium oxide nanoparticles, that can target tumors for improved imaging. These nanoparticles could enhance the diagnosis and treatment of brain tumors and other cancers by reducing toxic effects of chemotherapy.
Researchers have discovered a new radiotherapy technique using gadolinium to treat glioblastoma (GBM) with minimal invasiveness. The therapy, called Gadolinium Synchrotron Stereotactic Radiotherapy (GdSSR), targets cancer cells while sparing normal brain tissue, offering a potential cure for this deadly disease.
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.
A new nickel-based alloy with added gadolinium has been verified as safe for the disposal of spent nuclear energy fuel. The alloy can be fabricated in large quantities using conventional techniques and has a higher neutron-absorption capacity than borated stainless steel.
A non-invasive imaging technique has been developed to detect plaques beginning to form in blood vessels, according to researchers from WashU Medicine. The technique uses nanoparticles to target growing capillaries and visualize plaque development, with potential applications for early cancer detection as well.