Medical Devices

Medical Devices News -- ScienceDaily Latest research news on medical devices and medical technology.

  • Deadly heart rhythm halted by noninvasive radiation therapy
    on December 14, 2017 at 3:17 pm

    Radiation therapy often is used to treat cancer patients. Now, doctors have shown that radiation therapy -- aimed directly at the heart -- can be used to treat patients with a life-threatening heart rhythm. They treated five patients with irregular heart rhythms, called ventricular tachycardia, who had not responded to standard treatments. The therapy resulted in a dramatic reduction in the number of ventricular tachycardia episodes. […]

  • Presurgical imaging may predict whether epilepsy surgery will work
    on December 11, 2017 at 7:08 pm

    A statistical approach to combining presurgical PET scans and functional MRI of the brain may help predict which patients with drug-resistant epilepsy are most likely to benefit from surgery. […]

  • Molecular beacon signals low oxygen with ultrasound
    on December 8, 2017 at 4:35 pm

    Areas of hypoxia, or low oxygen in tissue, are hallmarks of fast-growing cancers and of blockages or narrowing in blood vessels, such as stroke or peripheral artery disease. Researchers have developed a way to find hypoxic spots noninvasively in real time. The researchers developed an oxygen-sensitive molecular beacon that emits ultrasound signals in response to light, a process called photoacoustic imaging. […]

  • Deep insight into the heart
    on December 8, 2017 at 2:55 pm

    A new article outlines how modern non-invasive examinations using state-of-the-art imaging technology can reduce the risk of not-detecting infections of the heart muscle possibly leading to chronic inflammations and sudden death. […]

  • New assay may help predict which pancreatic lesions may become cancerous
    on December 8, 2017 at 1:53 pm

    A new report describes a new simple molecular test to detect chromosomal abnormalities -- biomarkers known as telomere fusions -- in pancreatic tumor specimens and pancreatic cyst fluids. This assay may help predict the presence of high-grade or invasive pancreatic cancers requiring surgical intervention. […]

  • Contrast-enhanced digital mammography comparable to breast MRI after therapy or chemo
    on December 7, 2017 at 12:37 am

    Contrast-enhanced digital mammography is comparable to breast MRI in evaluating residual breast cancer after neoadjuvant endocrine therapy or chemotherapy, according to new results. […]

  • PET tracer gauges effectiveness of promising Alzheimer's treatment
    on December 6, 2017 at 5:24 pm

    Researchers report on the first large-scale longitudinal imaging study to evaluate BACE1 inhibition with micro-PET in mouse models of Alzheimer's disease. PET imaging has been established as an excellent identifier of the amyloid plaque and tau tangles that characterize Alzheimer's disease. Now it is proving to be an effective way to gauge treatment effectiveness. […]

  • PET identifies which prostate cancer patients can benefit from salvage radiation treatment
    on December 4, 2017 at 9:23 pm

    For prostate cancer patients who have rising levels of PSA (a cancer indicator) even after radical prostatectomy, early treatment makes a difference. In a study featured in the December issue of The Journal of Nuclear Medicine, Australian researchers demonstrate that PET scans can identify which of these prostate cancer patients would benefit from salvage radiation treatment (SRT). […]

  • Ultrasound imaging needle to transform heart surgery
    on December 1, 2017 at 2:10 pm

    Heart tissue can be imaged in real-time during keyhole procedures using a new optical ultrasound needle. The revolutionary technology has been successfully used for minimally invasive heart surgery in pigs, giving an unprecedented, high-resolution view of soft tissues up to 2.5 cm in front of the instrument, inside the body. […]

  • Neutrophil-inspired propulsion
    on November 30, 2017 at 6:38 pm

    Inspired by white blood cells rolling on endovascular walls before transmigrating to the disease site, scientists have succeeded in getting particles to move along the walls of microscopic, three-dimensional vessels. This method could be used in targeted cancer therapeutics. […]

  • Visible signals from brain and heart
    on November 30, 2017 at 4:23 pm

    Key processes in the body are controlled by the concentration of calcium in and around cells. Scientists have now developed the first sensor molecule that is able to visualize calcium in living animals with the help of a radiation-free imaging technique known as optoacoustics. The method does not require the cells to be genetically modified and involves no radiation exposure. […]

  • Complications at birth associated with lasting chemical changes in the brain
    on November 28, 2017 at 2:09 pm

    New research shows that adults born prematurely -- who also suffered small brain injuries around the time of birth -- have lower levels of dopamine in the brain. […]

  • Abbreviated breast MRI may be additional screening option for dense breasts
    on November 28, 2017 at 2:09 pm

    Among women with dense breast tissue, for whom traditional mammograms are less effective at detecting cancer, who request additional screening after a negative mammogram, abbreviated breast MRI (AB-MR) may be a valuable cancer detection tool. […]

  • Imaging technique shows progress Alzheimer's disease
    on November 23, 2017 at 6:10 pm

    Using ‘Raman’ optical technology, scientists can now produce images of brain tissue that is affected by Alzheimer’s disease. The images include the surrounding areas, already showing changes. […]

  • New imaging technique peers inside living cells
    on November 16, 2017 at 7:21 pm

    Called Ultrasound Bioprobe, a non-invasive approach allows researchers to view sub-cellular structures and their mechanical behavior at nanoscale resolution. […]

  • Manganese-based MRI contrast agent may be safer alternative to gadolinium-based agents
    on November 15, 2017 at 5:46 pm

    Researchers have developed a manganese-based magnetic resonance imaging contrast agent, a potential alternative to gadolinium-based agents, which carry significant health risks for some patients. […]

  • Brain structure, cognitive function in treated HIV-positive individuals
    on November 13, 2017 at 5:37 pm

    Adults with human immunodeficiency virus (HIV) and good viral suppression on combination antiretroviral therapy had poorer cognition and reduced brain thickness and volume on magnetic resonance imaging than adults without HIV, but changes over time in cognitive performance and brain structure were similar between the two groups over two years. […]

  • Why do some head knocks cause more damage than others?
    on October 31, 2017 at 6:37 pm

    Veteran sailors know that rogue waves can rise suddenly in mid-ocean to capsize even the largest vessels. Now it appears that a similar phenomenon called shear shock wave occurs in the concussed brain. It may help explain why some head knocks cause so much more harm than others. […]

  • How a $10 microchip turns 2-D ultrasound machines into 3-D imaging devices
    on October 31, 2017 at 3:15 pm

    Technology that keeps track of how your smartphone is oriented can now give $50,000 ultrasound machines many of the 3-D imaging abilities of their $250,000 counterparts -- for the cost of a $10 microchip. […]

  • Successful cardiogenic shock treatment using a percutaneous left ventricular assist device
    on October 31, 2017 at 12:53 pm

    Scientists have succeeded in minimally invasive treatment of a patient with acute heart failure due to medical treatment-resistant cardiogenic shock by making use of Impella, a percutaneous auxiliary artificial heart, for the first time in Japan. This method is anticipated as a new therapy for treating patients with acute heart failure due to medical treatment-resistant cardiogenic shock. […]

  • Focused ultrasound shows promise for treating Parkinson's tremor
    on October 30, 2017 at 6:13 pm

    An initial test to determine if a scalpel-free form of brain surgery can reduce tremor caused by Parkinson's disease has produced encouraging results. Further research is warranted, the researchers conclude. […]

  • Noninvasive brain imaging shows readiness of trainees to perform operations
    on October 24, 2017 at 2:33 pm

    While simulation platforms have been used to train surgeons before they enter an actual operating room (OR), few studies have evaluated how well trainees transfer those skills from the simulator to the OR. Now, a study that used noninvasive brain imaging to evaluate brain activity has found that simulator-trained medical students successfully transferred those skills to operating on cadavers and were faster than peers who had no simulator training. […]

  • Researchers use novel imaging to predict spinal degeneration
    on October 20, 2017 at 2:17 pm

    A main cause for spinal disc degeneration is thought to be a change in the water content in the intervertebral disk. A research team used a novel magnetic resonance imaging technique, called apparent diffusion coefficient (ADC) maps, which directly assessed the movements and dynamics of the water in the intervertebral disk and other spinal structures. The ADC maps provided precise assessments and correlations with degeneration. […]

  • New imaging approach maps whole-brain changes from Alzheimer's disease in mice
    on October 17, 2017 at 3:00 pm

    A new imaging system that offers a better way to monitor the brain changes indicative of Alzheimer's in mouse models of the disease could help speed new drug development. […]

  • Novel PET tracer identifies most bacterial infections
    on October 5, 2017 at 3:11 pm

    Medical scientists have developed a novel imaging agent that could be used to identify most bacterial infections. […]

  • Newborns with congenital heart disease show signs of brain impairment even before cardiac surgery
    on October 5, 2017 at 2:27 pm

    Using a novel imaging technique, researchers demonstrate for the first time that the brains of high-risk infants with congenital heart disease already show signs of functional impairment even before they undergo corrective open heart surgery. […]

  • Brain damage caused by Zika exposure in utero can be detected by both fetal MRI and ultrasound
    on October 4, 2017 at 12:49 pm

    Magnetic resonance imaging and ultrasound provide complementary data needed to assess ongoing changes to the brains of fetuses exposed to Zika in utero. […]

  • New cardiac catheter combines light and ultrasound to measure plaques
    on October 3, 2017 at 6:45 pm

    Biomedical engineers have combined intravascular ultrasound with fluorescence lifetime imaging in a single catheter probe that can image the tiny arteries of a living heart. The new catheter can simultaneously retrieve structural and biochemical information about arterial plaque that could more reliably predict heart attacks. […]

  • New targeted alpha therapy protocol for advanced prostate cancer
    on October 3, 2017 at 3:10 pm

    Therapy options are limited for men with advanced-stage, metastatic castration-resistant prostate cancer, but a new treatment protocol offers hope. Researchers report on their novel dosing regimen for actinium-225-labeled targeted alpha therapy of patients with prostate specific membrane antigen (PSMA)-positive tumors. The protocol balances treatment response with toxicity concerns to provide the most effective therapy with the least side effects. […]

  • MRIs are safe for patients with wide variety of pacemakers, defibrillators, study shows
    on September 29, 2017 at 1:33 pm

    Magnetic resonance imaging appears to be safe for patients with cardiac implantable electronic devices, even for chest imaging, according to a new study. […]