Articles tagged with Ultrasound
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Researchers at the University of Illinois Urbana-Champaign have developed a low-cost ultrasound imaging method to study the relationship between Alzheimer's disease and the brain's vascular system. The technique, which provides high-resolution images of animal microvasculature, may aid in early detection of the disease.
Researchers from Huazhong University of Science and Technology developed a miniaturized microfiber ultrasound sensor for photoacoustic imaging, improving sensitivity by one order of magnitude. The sensor achieves low noise equivalent pressure and broad response bandwidth, enabling high-resolution imaging with large depth capabilities.
The American College of Radiology has issued risk mitigation guidance to help healthcare institutions conserve contrast media supplies amid a global shortage. Two healthcare systems, Vanderbilt University Medical Center and the University of North Carolina, have implemented strategies that reduced their contrast use by at least 50%.
The article provides guidance on alternative imaging methods for interventional radiology procedures, including the use of intravascular ultrasound, alternative contrast agents such as gadolinium and carbon dioxide, and case prioritization strategies to optimize available supplies. The authors recommend creating a priority matrix and h...
New technology measures peak velocity of blood flow in the heart accurately, helping doctors diagnose and monitor patients with heart failure. The 4D heart MRI scan provides precise imaging of the heart valves and flow inside the heart, enabling better treatment planning.
A novel AI-empowered robotic device successfully assisted in percutaneous nephrolithotomy—surgery for removing large kidney stones. The trial showed improved precision and reduced complications, with a significant reduction in needle punctures and puncture duration.
A cross-sectional study found a strong association between ultrasound-derived fat fraction (UDFF) and MRI proton-density fat fraction (PDFF), providing high sensitivity for detecting hepatic steatosis. The study showed that UDFF had an AUC of 0.90 for identifying PDFF ≥5.5%.
Scientists create genetically engineered mouse model that changes color in response to light, allowing them to isolate background noise from blood flow and enhance imaging techniques. This breakthrough enables researchers to observe internal physiology with unprecedented accuracy, paving the way for new treatments and therapies.
Researchers developed a new ultrasound localization microscopy technique to image blood vessels and measure blood flow in the brain. The method uses microscopic bubbles as a contrast agent and accelerates post-processing to 10-30 seconds, enabling rapid imaging of whole-brain microvasculature.
Researchers at Concordia University have developed a new platform technology called direct sound printing (DSP), which uses soundwaves to produce new objects. The process creates sonochemical reactions in minuscule cavitation regions, generating pre-designed complex geometries that cannot be made with existing techniques.
A study suggests that lung ultrasounds performed by primary care physicians can accurately diagnose community-acquired pneumonia with high specificity. This could allow for direct antibiotic prescribing, saving time and money for patients and reducing X-ray radiation.
Researchers developed a method combining low-power lasers with ultrasound to safely and efficiently remove arterial plaque. The technique reduces the risk of complications and improves the efficiency of plaque removal compared to traditional methods.
A study found that general practitioners use ultrasound for exploratory purposes, outside of formal training areas, raising concerns about appropriate use and scanning competency. Meanwhile, lung ultrasounds may enable primary care physicians to prescribe antibiotics directly, reducing radiation exposure and saving time.
A study found that 24.5% of GPs used POCUS for exploratory purposes, rather than focused examinations, highlighting the need for guidelines on appropriate use. The study also showed that 75% of GPs performed exams outside their training areas, raising concerns about patient safety.
A study published in AJR found that COVID-19 mRNA vaccination-induced axillary lymphadenopathy resolves after a mean of 97 days. Longer resolution times were observed with Moderna vaccination, receipt of second doses, and thicker cortical thickness at presentation.
The QUSTom project aims to develop a new medical imaging modality using ultrasound and supercomputing, improving breast cancer diagnosis and potentially replacing mammograms. The technology will offer superior image quality and better tumor monitoring, while being completely safe for patients.
The new center aims to advance a groundbreaking combination of focused ultrasound and cancer immunotherapy, potentially revolutionizing cancer treatment. The partnership will focus on overcoming existing limitations of immunotherapy and expanding treatment options for various types of cancer.
A new study published in the European Heart Journal shows that MRI is superior to echocardiography for diagnosing heart failure and predicting patient outcomes. The research found that MRI can accurately measure left ventricular filling pressure, leading to improved diagnosis and reduced need for invasive assessments.
Dr. Gary J. Whitman, MD of the University of Texas MD Anderson Cancer Center, has been appointed as the 122nd President of the American Roentgen Ray Society (ARRS). He succeeds Jonathan Kruskal, MD, PhD, and will serve for the next year.
Researchers at Cedars-Sinai have developed an AI tool that accurately predicts pancreatic cancer patients based on CT scan images. Lowering blood cholesterol has also been shown to slow the growth of prostate cancer by enhancing immune cell action. Additionally, a new study found that an ultrasound probe plugged into a smartphone can b...
Researchers developed a 3D imaging technique that captures thin peripheral blood vessels, aiding in diagnosing and treating peripheral vascular diseases. The new modality provides functional diagnostic values for blood supply to tissues without contrast agents.
A research team from City University of Hong Kong has developed an efficient electrochemical intercalation method to produce high-yield mono- or few-layer transition metal dichalcogenide (TMD) nanosheets. The new strategy offers a higher degree of control over lithium insertion and can be scaled up for industrial applications.
A multicenter study found that only 42% of patients with a visualization score C on surveillance exams maintain the same score on follow-up exams. The study suggests that alternative surveillance strategies may be necessary for patients at risk for HCC, particularly those with severe steatosis and advanced cirrhosis.
A new Northwestern Medicine study has found that the COVID-19 vaccine is not associated with birth defects that are detectable on ultrasound. The study analyzed electronic medical records from a cohort of 3,156 pregnant people who received at least one vaccine dose and found no increased risk of major fetal structural anomalies.
Researchers found that AI-enhanced diagnosis helps doctors accurately detect fetal congenital heart disease, with fellows making the most accurate diagnoses. The new system uses graphical charts to represent the AI's analysis of ultrasound videos, improving accuracy and trust among medical professionals.
A GE Research-led team has demonstrated the ability to prevent or reverse diabetes in preclinical model systems using ultrasound-based bioelectronic medicine. The team's findings, published in Nature Biomedical Engineering, represent a significant milestone in this field and pave the way for future clinical translation.
Researchers at Boston University have developed optoacoustic neurostimulation with single neuron and subcellular level precision. Optoacoustic neuromodulation may offer advantages over ultrasonic neuromodulation, including higher spatial temporal resolution.
The team used a microscale diffuser to distribute ultrasound waves uniformly, reducing the risk of over-exposure or under-exposure. The device successfully stimulated cells in human embryonic kidney cells and neuron cells, as well as mice, with improved targeting.
Research from the University of Minnesota found that lower left atrial function was associated with higher risk of developing dementia. Atrial myopathy, characterized by abnormal left atrial function and size, was identified as an independent risk factor for dementia.
A new 3D matrix ultrasound method has been developed to assess cardiovascular risk in healthy individuals, offering a reliable and accurate alternative to traditional methods. The technique shows promise for personalized prevention and treatment strategies by detecting and quantifying an individual's accumulated cardiovascular damage.
Physicists simulate acoustic propulsion of freely orientable nanoparticles by traveling ultrasound waves, finding that particle orientation affects propulsion. The study reveals important properties of acoustically propelled nanoparticles suitable for biomedical applications.
Researchers have developed an ultrasonic retinal prosthesis that can stimulate the blind retina to transmit signals to the brain, providing a promising solution for vision restoration. The device uses ultrasound waves to activate small groups of neurons in the eye, similar to how light signals activate a normal eye.
Researchers have created a groundbreaking dataset of ultrasonography scans of three major arteries supplying blood to the brain in children. The dataset consists of 821 participants, allowing for the development of machine learning models that can accurately predict a child's age and cognitive abilities based on their ultrasounds.
Researchers from University of California - Davis found that ultrasounds can detect when abalone are ready to spawn without touching them. The technique creates a gonad index score ranging from 1 to 5 indicating readiness for reproduction.
A new AI model combines multiple machine learning methods to accurately detect thyroid cancer and predict treatment outcomes from routine ultrasound images. The multimodal platform achieved high accuracy rates in detecting malignancies and predicting pathological stage and genomic mutations.
Researchers have developed a low-cost, easy-to-use focused ultrasound device that can precisely target the mouse brain. The $80 device, created using a 3D printer, has been shown to achieve sub-millimeter targeting accuracy and improve drug delivery outcome.
A study published in Human Reproduction found that smoking by mothers during the periconceptional period is associated with delayed embryonic development, smaller foetuses at the 20-week ultrasound scan, and lower birth weights. The delay in embryonic development was found to have a greater impact in the second trimester of pregnancy.
Researchers have made a significant breakthrough in predicting heart attacks and strokes by developing a non-invasive method using super-resolution ultrasound imaging. The technology aims to detect high-risk atherosclerotic plaques that are prone to rupture, allowing doctors to prescribe life-saving interventions.
Researchers at the University of Nottingham have developed a groundbreaking technology to measure the microscopic elasticity of materials. By analyzing the speed of sound across the material's surface, they can reveal the orientation and inherent stiffness of small crystals, which is essential for material performance.
Salk researchers have engineered mammalian cells to be activated using ultrasound, a method that paves the way toward non-invasive versions of deep brain stimulation, pacemakers, and insulin pumps. The team found a protein called TRPA1, known for its role in responding to noxious compounds, which also opens in response to ultrasound.
Researchers found that 30% of fetuses who later developed ASD had heart, kidney, and head anomalies detected during routine prenatal ultrasounds. These anomalies were more common in girls and linked to the severity of ASD. The study suggests that doctors can use these signs to evaluate the probability of a child being born with ASD.
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.
Cedars-Sinai OB-GYN experts present research on improving preeclampsia detection through AI-powered analysis of electronic health records. They also explore the relationship between incomplete information on vaccine side effects and COVID-19 vaccine hesitancy, highlighting the need for targeted preventive therapies. Furthermore, the te...
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.
Researchers at GIST demonstrate that ultrasound pulses can reduce β-amyloid plaque concentration and tau protein levels in AD-model mice, suggesting a promising non-invasive therapeutic strategy. The treatment also improves brain connectivity without causing harm to brain tissue.
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.
Researchers have developed a technique that analyzes cell-free RNA in a mother's blood to predict healthy pregnancy outcomes and detect potential complications like preeclampsia. The approach showed promise in identifying patterns of gene expression associated with a healthy pregnancy and predicting preeclampsia risk with high accuracy.
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.
A new study published in Science Advances has shown that transcranial ultrasound (TUS) can disrupt the brain's credit assignment processes, leading to more exploratory decisions. The study also found that TUS selectively alters behavior without affecting other brain regions.
A prospective study found that ultrasound alone adequately completed the diagnostic evaluation of 71.2% of noncalcified lesions, diagnosed 92.1% of cancers, and yielded a sensitivity of 94.9%. Radiologists should consider performing ultrasound first for digital breast tomosynthesis-recalled noncalcified masses.
Researchers have developed a CRISPR/Cas9 gene editing system to enhance the effectiveness of sonodynamic therapy, allowing tumors to be effectively shrunk in a mouse model of liver cancer. The technology reduces antioxidant defense systems, increasing cancer cell death from the treatment.
Researchers use speaker shakers to generate vibrations in a plate, creating sound waves that constructively interfere at the target minifigure. The focused energy knocks over the single Lego minifig without disrupting the surrounding minifigs.
Researchers have developed microbubbles that can acoustically detect blood oxygen levels, showing a strong correlation between oxygen concentration and acoustic bubble response. This innovation has the potential to benefit medicine and imaging by evaluating oxygen-deprived regions of tumors and in the brain.
Researchers developed an AI method to correct speed of sound aberrations in photoacoustic images, resulting in improved image quality and resolution. The technique reduced streak artifacts by up to 5% and increased signal-to-noise ratio by about 25 decibels.
A new trial shows that the novel surgical device venous external support (VEST) may improve outcomes of coronary bypass grafting using leg veins by preventing intimal hyperplasia, a key factor in vein graft failure.
A noninvasive diagnostic method, sonobiopsy, has been developed to detect brain tumors with improved sensitivity. The method uses focused ultrasound to target tumors and injects microbubbles that release biomarkers into the bloodstream.
A new study found that low-dose CT scans are as accurate as standard-dose scans in diagnosing appendicitis and differentiating between uncomplicated and complicated cases. This breakthrough could lead to reduced radiation exposure for young patients, improving treatment outcomes.
Researchers at Sunnybrook Health Sciences Centre have successfully delivered antibody therapy to breast cancer metastases in the brain using focused ultrasound. The treatment, which temporarily opens the blood-brain barrier, has shown promising results with tumor size reductions of up to 21% in patients.
Researchers at KTH Royal Institute of Technology developed an ultrasound-assisted extraction method for valuable metals from electric car batteries, reducing extraction time by 50% and increasing metal ion recovery. The new process uses gentler acids and eliminates the need for harsh chemicals.
A prospective study found that liver stiffness measurements obtained by shear-wave elastography decreased significantly after image-guided intervention for chronic Budd-Chiari syndrome in children. Disease recurrence was typically associated with an increase in liver stiffness measurements compared to prior assessments.