Articles tagged with Ultrasound
Researchers have discovered that dolphins can generate two sound beam projections simultaneously, each with different frequencies and directions. This ability could help dolphins locate objects more accurately, according to Dr. Josefin Starkhammar, who led the study published in Biology Letters.
A study found that gamma imaging outperformed ultrasound in detecting breast cancer, especially in women with dense breast tissue. Gamma imaging provided 100% sensitivity and 82% specificity, leading to a better prognosis for breast cancer patients.
A Tel Aviv University researcher has found that ultrasound scans are as effective as CT scans for diagnosing head and neck ailments, suggesting a safer alternative. The study's results have implications for the use of CT scans in medical procedures, particularly those involving radiation exposure.
Researchers at Columbia Engineering School have developed a new, non-invasive technique called Electromechanical Wave Imaging (EWI) to map the electrical activation of the heart. This breakthrough method could help doctors treat arrhythmias more efficiently and precisely.
A study found that sonography with power Doppler can identify subclinical disease and joint activity in children with JIA, which complements the physical exam. The study also showed that certain combinations of physical exam findings are highly sensitive and ultrasound does not add value to clinical management.
Researchers found that combining ultrasound with pre-operative MRI is a cost-effective strategy for evaluating rotator cuff tears. The study showed that this hybrid approach can be more cost-effective than using MRI alone, especially in populations with lower pre-test probabilities of rotator cuff tear.
Dr. Jamie Tyler will discuss medical uses of ultrasound in treating neurological disorders such as depression and anxiety through selective brain stimulation. The presentation aims to explore the safety and efficacy of emerging technologies like ultrasound for non-invasive therapies.
A new method for preventing premature birth has been announced, showing that treating pregnant women at risk with a low-cost progesterone gel can reduce the rate of early preterm delivery in women with short cervix by 45%. The study found that progesterone also reduced respiratory distress syndrome in premature babies.
A five-year study found that traditional nursing care methods, such as compression bandages and support stockings, work just as well as ultrasound therapy in healing venous leg ulcers. Laughter may also play a role in improving blood flow and overall health for patients with these conditions.
Scientists at the University of California, San Diego are creating a new technique for identifying critical lymph nodes in breast cancer patients. By injecting fluorescent microbubbles into the tumor and imaging them with ultrasound, doctors can pinpoint the sentinel lymph node without surgery.
The use of bedside ultrasound has increased significantly, particularly among non-radiologists, due to advancements in equipment quality and affordability. This shift enables point-of-care ultrasonography, which can decrease medical errors and provide real-time diagnosis.
Researchers found ultrasound fusion imaging to be safe and effective in detecting bone and soft tissue cancers, with 93% accuracy compared to CT biopsies. The technique guides a needle biopsy with precise accuracy, making the experience more convenient for patients.
Scientists can now focus light to a controllable position within tissue, overcoming the challenges of scattering in biological tissues. This breakthrough technology uses an ultrasound guide star and time-reversal mirror to create high-resolution images of objects within tissue.
Researchers recommend a selective CT scan strategy to diagnose pulmonary embolism, reducing radiation exposure and adverse reactions. The approach involves using compression ultrasound to test for deep vein thrombosis before ordering a CT scan, resulting in cost savings and increased life expectancy for patients.
A new ultrasound technique, elastography, can accurately predict cancer in patients with BI-RADS category 4 masses by measuring tissue softness. The study found an 79% accuracy rate in identifying cancer, suggesting that this method could reduce unnecessary breast biopsies.
University of Illinois researchers create an acoustic cloak that hides underwater objects from detection, using metamaterials to manipulate sound waves. The technology has potential applications in military stealth, soundproofing, and medical imaging.
A study published in the American Journal of Roentgenology found that targeted breast ultrasound was highly accurate in detecting breast cancer in women under 30. The study's high sensitivity and negative predictive value support its use as the primary imaging technique for young women with focal breast concerns.
Researchers have developed a three-dimensional metamaterial that captures evanescent sound waves, allowing for super-resolution acoustic imaging. The device, mounted on an ultrasound probe, can resolve image features as small as one-fiftieth of the wavelength of the sound waves.
A team of University of Washington undergraduate students has developed a low-cost ultrasound system that uses a modular design and off-the-shelf parts. The system aims to improve access to maternal healthcare in developing countries, where an estimated 1,000 women die each day from childbirth-related mortality.
A study by researchers at the University of Missouri has found that students' spatial abilities are crucial for success in sonography. Students with greater spatial abilities were more likely to score high on scanning proficiency tests over two semesters.
Researchers used low-intensity pulsed ultrasound (LIPUS) to treat patients with delayed unions of the tibia, resulting in a 34% increase in bone mineral density. This non-invasive treatment modality shows promise as a viable option for patients suffering from these injuries.
The UCLA-developed Combat Casualty Care educational program provides critical training for U.S. armed forces medical personnel in traumatic injury management, applicable to both military and civilian settings. The program incorporates cutting-edge video footage, patient cases, and ultrasound training modules to enhance trauma care.
A recent study published in the American Journal of Roentgenology found that the incidence of serious infection after common ultrasound-guided procedures is low. The researchers reviewed 13,534 procedures and reported only 14 procedure-related infections, with nearly all patients improving on antibiotics alone.
Using ultrasound and a minimally-invasive procedure, radiologists can identify and remove embedded foreign objects from patients with self-embedding behavior. Early detection and removal are key steps for effective therapy and recovery.
Researchers discovered two methods to increase antioxidants in potatoes, including electric shocks and ultrasound treatment, resulting in up to 50% more phenols and chlorogenic acid. The process could have widespread commercial application for functional foods with potential health benefits.
Researchers have developed revolutionary ultrasonic transducers that can generate and detect ultrasound at scales a thousand times smaller than conventional ultrasonics. These tiny devices can be used to perform intracellular ultrasonics, produce high-frequency ultrasounds smaller than visible light wavelengths.
Researchers at Duke University have demonstrated a robot's ability to locate and sample lesions in simulated human organs without human assistance. The robot uses artificial intelligence to process real-time data from ultrasound scans and perform tasks such as biopsies.
A new study finds that endoscopic ultrasound (EUS) is associated with improved outcomes in patients with localized pancreatic cancer. EUS evaluation was found to improve overall survival, possibly due to earlier cancer detection and more selective surgery. The study analyzed a large population-based cancer registry and demonstrated the...
Researchers at the University of Adelaide are exploring ultrasound to combat blue-green algae blooms in water supplies, a significant global problem. They aim to develop an environmentally friendly and cost-effective method using low-amplitude ultrasound to immobilize the algae without releasing toxins.
Researchers at the University of Leeds are developing a new cancer treatment that uses gas bubbles and sound waves to deliver toxic drugs directly to tumors. The technique has the potential to be adapted for other diseases and could provide a more effective and targeted treatment for colorectal cancer.
A new study from NYU Langone Medical Center shows that carotid artery ultrasound is a valuable screening tool for diagnosing and excluding coronary artery disease. The non-invasive test can identify severe plaque buildup in the neck arteries, potentially avoiding the need for invasive angiography.
Researchers at Arizona State University have developed a new method of noninvasive brain stimulation using pulsed ultrasound, which stimulates action potentials and drives intact brain activity without surgery. The approach shows promise for diagnosing and treating brain dysfunctions such as epilepsy, Parkinson's disease, and depression.
Transcranial doppler ultrasound detects cerebral emboli in asymptomatic carotid stenosis patients, revealing those at high risk of stroke and low risk of benefiting from surgery. The technique identifies a small group with high stroke risk, while others have a low risk that may not warrant intervention.
Researchers discovered that low-intensity ultrasound therapy can improve the survival and function of tissue grafts after surgery. The treatment increased cellular activity, reduced waste buildup, and enhanced molecular motion, leading to better outcomes for patients undergoing various surgical procedures.
Researchers at the University of North Carolina have developed a male contraceptive method using therapeutic ultrasound, which has shown promising results in animal studies. The method involves 15 minutes of ultrasound treatment for six months of contraception, with permanent sterilization achieved with no vasectomy needed.
Researchers at UNC Chapel Hill have received a $100,000 Grand Challenges Exploration Grant to develop a long-term, reversible male contraceptive. They plan to use therapeutic ultrasound instruments to depletion testicular sperm, making it impossible for men to father children.
A study found that ultrasound can effectively diagnose muscle tears in soccer players during games, allowing for immediate play cessation. This non-invasive imaging modality helps prevent further injuries by detecting partial or complete muscle tears on-site.
Ultrasound imaging is a highly effective and non-invasive test for characterizing peroneal nerve damage in patients with foot drop. High-resolution ultrasound was found to be more effective than EMG and MRI for evaluating common causes of foot drop, making it the recommended first-line imaging choice.
A new automated 3-D mapping and labeling system has been developed to improve the accuracy, efficiency, and speed of routine freehand ultrasound exams. The system reduces scanning time by up to 16 seconds per target and accurately measures mass locations in relation to the nipple.
New research presents findings on non-alcoholic fatty liver disease (NAFLD), showing it significantly affects transplant outcomes and highlighting alternative diagnostic methods. A scoring system, known as the NAFLD fibrosis score, also predicts poor outcomes in patients with NAFLD.
Gerald Posakony, a pioneering ultrasound expert, was honored with the John Fritz Medal for his contributions to medical diagnostic ultrasound and nondestructive evaluation technologies. His work led to modern ultrasound technology advancements, including obstetric sonography.
Magnetic resonance-guided focused ultrasound (MRgFUS) is a new interventional radiology tool showing promise in treating uterine fibroids, offering lasting relief from symptoms without surgery. In a study of over 100 patients, women experienced significant improvement in symptoms, with 90% reporting considerable or excellent relief.
A world-renowned radiologist advocates for using ultrasound as the first-line imaging test for better diagnosis capability in evaluating acute female pelvic and lower abdominal conditions. Ultrasound is considered safer, radiation-free, and superior in diagnostic capability compared to CT scans.
A clinical trial is underway to test the effectiveness of a miniature ultrasound device in reducing joint pain in osteoarthritis patients. The device, created by Cornell University graduate student George K. Lewis, sends ultrasound waves deep into muscles via a coin-sized pad and has shown promise in improving mobility and reducing pain.
A study by researchers at the University of Maryland and Yale University found that measuring the fetal zone of the adrenal gland using 2D ultrasound is a better predictor of preterm birth than measuring cervical length. The d/D ratio was calculated as an index of FZE, which showed significant correlation with cAGV and d/D.
Plant leaves can be studied using ultrasound in a quick and simple way, revealing properties such as thickness, density, and water content. This method allows for non-contact analysis of leaves, which is useful for diagnosing agricultural and natural systems.
A review and meta-analysis of previous studies suggests that withholding anticoagulation therapy after a negative whole-leg compression ultrasound is associated with a low risk of developing a blood clot during the subsequent 3 months. This finding may lead to reconsidering multiple ultrasounds for low-risk patients.
Researchers discovered a noninvasive contrast-enhanced ultrasound imaging technique that can aid in the detection of early-stage ovarian cancer when combined with proteomic blood analyses. This method has shown high accuracy and the potential to save lives by detecting disease at an early stage.
A new Cochrane Systematic Review suggests that Doppler ultrasound can reduce infant deaths and caesarean sections in high-risk pregnancies by monitoring fetal health. However, the quality of the included studies is questionable, and more research is needed to confirm these findings.
Peter Kuchment, a leading researcher at Texas AüM University, is developing mathematical tools for improved medical imaging methods. Hybrid imaging methods like photoacoustic imaging aim to combine the strengths of different imaging modalities, enhancing tumor detection and treatment options.
A study found that almost 1 in 5 pregnant women receive 4 or more ultrasounds, despite guidelines recommending only two. This increase is more pronounced in low-risk pregnancies, highlighting the need to review current practices.
Two studies found targeted ultrasound effective in distinguishing between cancerous and benign masses in young women, reducing the need for biopsies and expensive diagnostic procedures. The procedure's low malignancy rates among women under 30 make it a safer alternative to surgery or needle biopsy.
A clinical trial found annual ultrasound screening significantly improves early breast cancer detection in women with dense breasts, while MRI increases sensitivity but also false-positive findings. The study suggests annual ultrasound as a suitable alternative to expensive MRI for these women.
Researchers used high-frequency ultrasound with elastography to identify skin cancer with high accuracy, distinguishing between malignant and benign lesions by measuring their elasticity. This non-invasive procedure can aid physicians in treatment and reduce the number of unnecessary biopsies of benign skin lesions.
A recent study found that MRI is highly accurate in detecting placenta accreta, a condition where the placenta attaches too deeply to the uterus. The condition can lead to severe bleeding and maternal death if not diagnosed early. With an accuracy rate of 90.1%, MRI has become a valuable tool in prenatal care.
Elastography improves ultrasound's specificity by measuring a lesion's compressibility and mechanical properties, accurately identifying cancerous lesions. The technique reduced unnecessary biopsies, correctly identifying 98% of malignant lesions and 82% of benign ones, according to the study.
A new study from Henry Ford Hospital found that simulated training for ultrasound-guided procedures significantly improved medical residents' knowledge, dexterity, and confidence in performing these procedures. The study showed a significant improvement between pre- and post-test scores on both written and practical exams.
A study published in American Journal of Roentgenology found that chest ultrasound is a viable alternative to chest CT for evaluating pediatric patients with complicated pneumonia. The study suggests using chest radiography and ultrasound as initial evaluations, with CT reserved for cases where ultrasound is technically difficult or di...
A new study suggests that invasive procedures may not be necessary for all patients with narrowed arteries in and around the kidneys. The researchers found that only a small percentage of cases progress to a dangerous blockage, and progression does not always predict severe kidney function decline.
Researchers have identified two ultrasound patterns that can accurately identify cancer spread and tumor burden in melanoma patients. These patterns can predict overall survival and help doctors decide on the amount of surgery required.