Articles tagged with Ultrasound
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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.
A non-invasive ultrasound test can accurately detect up to 96% of uterine cancer and 92% of uterine disease in postmenopausal women experiencing abnormal vaginal bleeding. The endovaginal ultrasound (EVUS) eliminates the need for invasive biopsies, which are often uncomfortable or unsuccessful.
The new technology enables doctors to assess pubic arch interference in minutes, allowing for better treatment decisions. It also reduces the need for expensive CT scans, which can cost up to $500 and take a week or more to obtain results.
Researchers at Penn State are establishing a unique center for the development of ultrasonic transducer/array technology, improving diagnosis for medical conditions like cardiovascular disease and birth defects. The center will focus on developing high-frequency devices and using new materials to create better clinical images.
A new study conducted at the University of Michigan found that 95% of pregnant women surveyed thought an ultrasound was important for their normal, healthy pregnancies. The survey also revealed that women would pay out of pocket for a routine ultrasound exam and felt it was very important to see their baby.
Researchers found that low-frequency ultrasound enhances the effectiveness of thrombolytic drugs in dissolving blood clots deep within the brain. This combination therapy may reduce the duration and doses of medication needed, minimizing risks of bleeding and other complications associated with stroke treatment.
Researchers found ultrasound can accurately diagnose disc bulges and herniations, as well as detect soft tissue abnormalities. This non-invasive technique may help document clinical problems and reduce healthcare costs compared to MRI.
Researchers studied 10 patients with acute bacterial endocarditis and found that 80% continued to have microembolisms up to four weeks after treatment. Microembolisms can induce brain abscesses and lesions leading to stroke, and antibiotics alone may not be sufficient to prevent this risk.
Researchers use transcranial Doppler ultrasound to monitor brain activity as it happens, detecting increased blood flow during thinking and decreased flow when tasks are resolved. This technology has implications for treating mental illness, stroke recovery, and even lie detection.
A new ultrasound contrast agent, Levovist, has been used to treat an ischemic stroke in a German patient. The agent revealed the blocked artery and allowed doctors to dissolve the clot with thrombolytic rTPA, restoring blood flow to the brain within 40 minutes of admission.
Researchers from Germany used a prototype magnetic sensor workstation to reconstruct transcranial ultrasound in 3D, significantly improving the identification of intracranial arteries and accuracy of follow-up measurements. The new technology also enables easier comparison of relationships among brain arteries.
A new ultrasound technique using transcranial Doppler and duplex carotid ultrasound can accurately measure carotid artery blockages, reducing the need for cerebral angiography and associated risks. This method is a safer alternative for assessing blockage before deciding on surgery for stroke prevention.
A new study by German neurologists found that transcranial color-coded duplex sonography (TCDS) is 90% effective in distinguishing between ischemic and hemorrhagic strokes under emergency treatment conditions. TCDS can accurately diagnose stroke type in most cases, making it a fast and reliable option for acute stroke treatment.
A new ultrasound technique has been developed to improve food inspection by spotting defects as small as 10 microns in size, which is one-fifth the diameter of a human hair. The technology allows for the non-destructive detection of voids, air, water, or protein strands in plastic-sealed containers.
Young physicians who undergo formal training in ultrasound testing on pregnant women perform better than those without such training, according to a Johns Hopkins study. The formal training program includes a checklist of sonographic skills and evaluates residents' progress through practical exams.
The new sonochemical synthesis technique creates highly magnetic metal powders with clusters of a few hundred atoms, exhibiting superparamagnetic behavior. These powders have the potential to be used in various applications including information storage, audio reproduction, and magnetic sealing.
The UW-Siemens image processor enables the creation of multiple diagnostic applications, increasing clinical efficiency. It allows for real-time panoramic imaging of internal organs and their surroundings, revolutionizing diagnosis and treatment.
Researchers have invented a new digitally encoded plastic transparency to test the accuracy of ultrasound scanners. The new phantom is more accurate and works faster than current phantoms, which are cumbersome hand-built blocks made of various tissue-mimicking materials.
The new technology uses parallel computing to analyze reflected sound waves, creating three-dimensional images quickly enough for clinicians to view a whole human heart as it beats. The system also enables doctors to electronically dissect and display selected slices of medical interest on a computer screen.