Articles tagged with Ultrasound
High-intensity ultrasound is used to generate nanoparticles of molybdenum disulfide or oxide, which bind to tiny silica spheres. Hollow shells are then created by etching away the silica, resulting in nanospheres with increased edge-surface area for enhanced catalytic activity.
Dr. Felix Herrmann proposes a new theory that seismic data may be showing a simpler interplay of only two substances, rather than complex mineralogies, allowing for clearer images and better understanding of the Earth's interior structure. This approach could lead to improved oil patch discovery and enhanced geological resolution.
A study found that TIA patients received fewer diagnostic tests, including ultrasound and echocardiography, compared to stroke patients. The study also showed that TIA patients were less likely to receive documented education on preventing further strokes at discharge.
A study of over 2700 children found repeated prenatal ultrasounds during pregnancy had no long-term impact on growth or development. Physical and developmental assessments showed similar outcomes between children exposed to multiple ultrasounds and those with a single scan.
A study of 109 patients found that combining MRI and ultrasound can significantly improve quality of life scores for women with uterine fibroids. The procedure is completely non-invasive and safe, with few side effects.
A recent study found that combining ultrasound with tissue plasminogen activator (t-PA) therapy significantly improves outcomes for patients suffering from ischemic strokes. The results show a 49% increase in dramatic clinical improvement and significant blockage reduction compared to traditional t-PA treatment alone.
Researchers found that ultrasound therapy increased clot clearance by 26% compared to tPA alone, with 70% of patients experiencing complete or partial clearance. The study used a hand-held extracranial ultrasound device to deliver heavy doses of the clot-busting drug tPA directly to blood clots.
A recent study published in Annals of Internal Medicine found that high-quality CT scans can accurately determine which pancreatic cancers are treatable, rendering endoscopic ultrasound unnecessary. The study also revealed that CT scans were more accurate in detecting new cancers and determining the stage of the disease.
The study investigates the accuracy of ultrasound in novel clinical conditions and assesses its feasibility for monitoring musculoskeletal changes in astronauts. The findings suggest that remote-guided ultrasound may be an effective method for performing diagnostic exams, with implications for emergency and rural medicine on Earth.
A study by AIUM found significant improvements in ultrasound practice quality after reaccreditation. The proportion of practices meeting accreditation requirements increased significantly, and scores were higher than initial applications.
Gary Whitman, MD, and Alfred Abuhamad, MD, were selected for the award due to their extensive participation in AIUM activities, teaching, and committee memberships. The American Institute of Ultrasound in Medicine has promoted safe and effective ultrasound use in clinical medicine for over 50 years.
The American Institute of Ultrasound in Medicine (AIUM) has awarded several ultrasound research grants to its members, including $10,000 for projects on tumor perfusion and pelvic sonography. The EER also recognized Tatjana Rundek with a special one-time award for her research on carotid artery distensibility.
The New Investigator Award recognizes outstanding research in ultrasound technology, promoting the safe and effective use of ultrasound in clinical medicine. Mr. Wu won the award for his scientific abstract presentation, marking a significant achievement in his academic career.
Researchers at UC Davis are developing a new cancer treatment that uses ultrasound to steer tiny capsules carrying cancer-fighting drugs to tumors. This approach aims to reduce the toxic side effects of current cancer treatments by concentrating the drug directly in the tumor.
A new method developed by UK researchers allows for accurate prediction of a woman's remaining reproductive life-span based on ovarian volume measurements. The technique uses mathematical models and computer analysis to estimate follicle numbers, providing a direct assessment of ovarian reserve.
The American Academy of Neurology has developed a guideline evaluating the use of transcranial doppler ultrasound (TCD) in patients with known or suspected cerebral vascular disease. TCD provides valuable information in screening children with sickle cell disease for stroke risk and detecting vasospasms after subarachnoid hemorrhage.
A study by the American College of Radiology suggests that plain film X-rays are not clinically useful in 72% of cases for children with non-traumatic stomach pain. The imaging study confirms diagnoses of constipation and bowel obstruction, but is unnecessary when other tests like CT or ultrasound are already anticipated.
According to the study, MRI is superior to ultrasound in predicting cerebral palsy in preterm infants. Ultrasound should be used as the first imaging technique due to its availability and lower cost.
The study found that transvaginal ultrasound provides superior imaging of the rectum and surrounding tissues, resolving rectal wall layers more clearly. Additionally, it is easier to perform with conventional ultrasound probes and causes less patient discomfort.
A 24-month study found that everolimus reduced intimal thickening and cardiovascular events, while sirolimus showed plaque regression. The results suggest that intravascular ultrasound measurements can be used as a valid surrogate for therapeutic intervention.
Early study results show that women with small uterine fibroids may be at increased risk of miscarriage, with smaller fibroids more associated with pregnancy loss. The research aims to investigate the influence of fibroids on pregnancy outcomes and will enroll an additional 3,300 ethnically diverse women.
Researchers found that ultrasound treatment didn't hasten healing for muscle contusions in rats. In fact, the treated muscles healed at the same rate as non-treated muscles, suggesting no physiological benefit from ultrasound.
Time-reversal acoustics (TRA) systems hold promise for precise medical imaging, diagnostic techniques, and incision-free surgical methods. TRA's ability to focus sound waves accurately in dense environments makes it an attractive solution for imaging the human body or targeting tumors non-surgically.
Researchers at the University of Illinois have developed a novel method using ultrasound from a household humidifier to create complex nanocomposite materials. The technique produces porous nanospheres and encapsulated nanoparticles with potential applications in catalytic reactions, drug delivery, and molecular sieves.
Research shows quality of information and empathy from healthcare providers are crucial in receiving bad news about pregnancy complications. Women want clear facts, options, and follow-up care details, as well as privacy and emotional support.
Researchers developed ultrasound-guided liposomes to boost imaging and target drug/gene therapy. The technique directs liposomes to specific targets, such as atherosclerotic plaques or blood clots, and releases drugs with ultrasonic pulses, improving visualization and diagnosis of arterial conditions.
A five-year study in Germany found that early ultrasound screening reduced the number of subsequent hip operations from 147 to around 80-100. However, the effectiveness depends on timely screening before six weeks of age.
A new procedure using cryotherapy has been shown to effectively reduce the size of benign breast lumps by an average of 73% without significant complications. Patients report satisfactory cosmetic results and a high level of patient acceptance for this non-invasive treatment.
The study found that 40% of miscarriages can be attributed to embryonic congestive heart failure, which can be identified using Doppler technology. The condition is characterized by increased free amniotic fluid and depressed myocardial contractility.
Researchers at Michigan Medicine developed computer-assisted breast imaging systems that improve the accuracy of interpretation of digital mammograms and breast ultrasound images. The systems were shown to improve the ability of highly experienced radiologists to detect cancerous tumors, potentially sparing women from unnecessary biops...
A new study has found that a 14-gauge automated tru-cut needle is highly accurate in diagnosing breast cancer, with over 99% accuracy rate. The study also showed that smaller biopsy needles can be just as effective as larger ones, offering a less invasive option for patients.
Researchers at UCSF suggest a new cutoff point for assessing risk based on weight for gestational age, increasing the prediction of adverse neonatal outcomes. The study found that fetuses in the lowest 5th percentile are at dramatically increased risk for low birth weight and preterm birth.
Researchers at Brigham Young University have successfully tested a new method to concentrate the impact of cancer drugs on specific tissues, sparing healthy areas. The method uses tiny water-soluble plastic particles and ultrasound to release the drug at the tumor site, significantly reducing tumor size in laboratory animals.
Researchers have successfully used Non-Contact Ultrasound (NCU) to inactivate bacterial spores, opening up potential for sterilizing mail, medical equipment, food, and more. The technology uses high-frequency sound waves to penetrate materials without causing harm.
Researchers at Thomas Jefferson University Hospital have successfully treated chronic tendon problems like tennis elbow with ultrasound-guided needle therapy. The procedure involves injecting corticosteroids, smoothing out bone and tissue, and eliminating calcifications to promote healing.
Researchers are developing non-invasive methods for delivering therapies, such as patches, inhalers, and ultrasound, to overcome limitations of traditional drug delivery. Tissue engineering also holds promise for growing new organs and tissues using cells and polymers, offering potential solutions for diseases like diabetes and paralysis.
The OHSU team will develop three miniaturized ultrasound devices that can be inserted into the heart to provide treatment through a single catheter, eliminating the need for invasive surgeries and improving patient outcomes. The devices will feature Doppler imaging and high-frequency sound waves to detect and treat abnormal heart rhythms.
Researchers measured the chemical reactions and light emission from a single water bubble excited by sound waves, finding temperatures high enough to break water molecules apart. The experiment showed that only a small fraction of sound energy is converted into light, with most energy going into mechanical energy.
Researchers used sensitive detection techniques to study energy dissipation during bubble collapse, finding that less than 1% of energy is converted into light and most goes into chemical reactions or mechanical energy. This understanding has implications for future work on sonochemistry and the possibility of sonofusion.
University of Pittsburgh researchers found combined PET/CT scans to be a valuable tool for staging and re-staging patients with difficult-to-track cancers. The technology identified additional cancerous lesions in 80% of ovarian carcinoma patients and 45% of cervical carcinoma patients, leading to changes in treatment plans.
Researchers at Ohio State University have developed an ultrasonic cleaning technique that can clean ceramic membrane filters without the need for harsh chemicals. The method uses sound waves to form and collapse bubbles, releasing heat and energy that flushes away contaminants.
A new ultrasound technique called Acoustic Radiation Force Impulse (ARFI) imaging can detect and characterize breast abnormalities that are deeper and smaller than previously thought. The method uses high-frequency sound pulses to 'feel' the tissues, revealing differences in stiffness and mechanical properties.
Researchers have developed a portable ultrasound device that uses high-intensity focused ultrasound (HIFU) to target and destroy unwanted tissue or cauterize lesions. The device has the potential to revolutionize emergency medical care, particularly in remote areas or on battlefields where traditional treatment is not possible.
A meta-analysis of three studies found that low-intensity ultrasound therapy significantly reduces healing time for non-operative fractures. The treatment group showed a mean time to healing that was 6.41 times shorter than the control groups.
A portable ultrasound device has been developed to detect neck artery blockages with high accuracy. The device takes only 8.8 minutes to perform a comprehensive examination, compared to 30 minutes or longer for standard laboratory ultrasounds.
A multi-center study led by Dr. Jay Iams found that home uterine monitoring has no clinical value in predicting early birth, despite its widespread use for high-risk women. The study's results reinforce previous findings that ambulatory monitors are not more effective than other diagnostic tools or surveillance programs.
A biomedical engineer has developed a 'sonic flashlight' that combines ultrasound images with the patient's natural appearance, enabling doctors to guide procedures without looking away. This technology could improve hand-eye coordination and reduce learning curves for radiologists.
Researchers have made a breakthrough in stopping internal bleeding without surgery, using traditional ultrasound to locate bleeding combined with HIFU. The technique has been shown to be effective in stopping bleeding in blood vessels and solid organs like the liver and spleen, offering new hope for emergency medical treatment.
A UC Davis study found that surgical consultations were faster and more accurate than CT scans and ultrasounds in diagnosing appendicitis. Surgeons determined diagnosis within 10 hours, while patients waited 13-19 hours for CT or ultrasound results.
A Mayo Clinic study found that over one-third of adults aged 45+ had plaque buildup on their aortic valves, increasing the risk of hardening and narrowing of the aorta. Lifestyle changes can help prevent life-threatening complications. Risk factors include male gender, high blood pressure, obesity, and elevated homocysteine levels.
Researchers found that ultrasound-induced lung damage is dependent on beamwidth, pulse duration, and exposure duration. The air-blood barrier near the surface of the lung may be the principal target for ultrasound-induced lung damage.
Researchers developed a new phased-array transducer system that enables electronic scanning of the prostate, reducing the need for mechanical adjustments. The design uses separate elements and adjusted signal timing to move the focus electronically.
Researchers found that children with a parent who had a premature heart attack showed structural and functional abnormalities in their arteries as young as 6 years old. These changes included thickened vessel walls and decreased reactivity, which can lead to atherosclerosis and increase the risk of heart disease.
A new medical imaging approach using 3D color Doppler ultrasound shows promise for better cancer detection and recognition in breast cancer patients. The technique uses sound waves and computerized equipment to visualize blood flow in the vessels around suspicious areas, distinguishing between tumors and benign masses.
A new ultrasound technique using sound can painlessly extract important molecules from the skin, opening up possibilities for non-invasive glucose monitoring in diabetics. The researchers also discovered that this approach could be combined with drug delivery via ultrasound, paving the way for a potential wristwatch or patch.
Research at UCSF found that MRI can provide more information on fetal abnormalities than ultrasound, leading to changes in treatment plans and improved outcomes. In two cases, MRI-based diagnosis led to treatments that saved the children's lives.
Researchers at UC have developed a novel method for detecting early signs of artery blockages using Doppler ultrasound, which can accurately predict turbulence intensity and detect atherosclerosis. This non-invasive technique is safer than current methods requiring ionizing radiation or pressure transducer insertion.
Researchers at the University of Illinois have successfully controlled and measured extremely high temperatures in microscopic gas bubbles formed by ultrasound. These hot spots can reach temperatures as high as a star surface and drive high-energy chemical reactions.
Researchers have developed a non-invasive method to detect early signs of artery blockages using Doppler ultrasound. The technique uses voice recognition to track turbulence in blood flow, providing a safer alternative to current methods that require ionizing radiation or invasive procedures.
A palm-sized ultrasound scanner can provide images of internal organs and detect sites of internal bleeding, assisting medics in treating battle victims according to injury severity. Prototype devices are currently under evaluation in civilian and military hospitals.