Tag Archives: detect

Apple unveiled its new $399 Watch Series 7 that lets you text from a keyboard on your wrist and can detect if you fall off your bike

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Apple unveiled its new $399 Watch Series 7 that lets you text from a keyboard on your wrist and can detect if you fall off your bike

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Scientists detect earthquake swarm at Hawaii volcano

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Russia's Next Military Move: Selling Radar That Can Detect Hypersonic Weapons?

Russia's Next Military Move: Selling Radar That Can Detect Hypersonic Weapons?Russia says it will sell radars in the Middle East that are designed to detect cruise missiles and hypersonic weapons.

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Ruth Bader Ginsburg was just treated for a pancreatic tumor, a type of cancer that spreads quickly and is hard to detect

Ruth Bader Ginsburg was just treated for a pancreatic tumor, a type of cancer that spreads quickly and is hard to detectThis is the fourth time the Supreme Court justice has been treated for cancer and the second time she's had pancreatic cancer.

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Scientists detect a black hole swallowing a neutron star 'like Pac-man'

Scientists detect a black hole swallowing a neutron star 'like Pac-man'For the first time, scientists have detected a black hole devouring a neutron star, according to a report released Monday.

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Scientists detect a repeating signal from deep space, but its origin is a mystery

Scientists detect a repeating signal from deep space, but its origin is a mysteryTo begin, there's zero evidence it's aliens. But for just the second time, a team of astronomers detected a flash of repeating of radio waves emanating from beyond our Milky Way galaxy. Using a new, sprawling Canadian telescope dubbed CHIME — which is the size of six hockey rinks — scientists identified the short, repeating burst in the summer of 2018 and published their results Wednesday in the journal
Nature.   The source of these super distant signals, from some 1.5 billion light years away, is still largely a mystery. What's agreed upon is that for these radio waves to travel millions of light years and arrive at Earth as strong signals, they must have a profoundly potent origin — perhaps a powerful explosion in another galaxy.  "We don’t know what can cause an emission that is that powerful," Shriharsh Tendulkar, an astrophysicist at McGill University and study coauthor, said in an interview. "We really don’t know what they are," added Marc Kamionkowski, a professor of physics and astronomy at Johns Hopkins University who had no involvement in the study, in an interview. "There is good evidence they’re coming from outside the Milky Way."  Radio waves are a form of light — though they're not visible.Image: nasaWhile scientists have detected more than 60 instances of fast radio bursts — which last just milliseconds — this is just the second known signal coming from the same location. Lots of things in space produce radio waves, and many of these signals hit Earth. "There are all sorts of radio waves arriving at all times," said Tendulkar. The sun is constantly sending radio waves through the solar system. And there's a number of powerful phenomena in the deep universe that blast radio waves into the cosmos — like black holes. Scientists are certainly deep in thought about where these distant, quick bursts might come from.  "There is a lot of speculation in the astrophysical transient community about the origin of these events and a number of theories have been put forward to explain how they are formed," Kate Maguire, a researcher at the Astrophysics Research Center at Queen’s University Belfast who had no involvement in the study, said over email. SEE ALSO: How NASA recorded the eerie Martian wind, without a microphone A leading theory, however, is that the leftover cores of exploded massive stars, known as neutron stars, may be releasing the short, powerful signals, said Maguire.  "Most people forced to bet would say they have something to do with neutron stars," noted Kamionkowski.  Tendulkar agrees: "Neutron stars are our best bet." When some old, massive stars collapse, they're believed to squish down into a mass the size of a city, forming a neutron star. Consequently, neutron stars are believed to be the densest known objects in the universe. And presumably, they can release a lot of energy. An artist's conception of a type of neutron star called a magnetar.Image: NASA's Goddard Space Flight Center/S. WiessingerOne type of neutron star, called a magnetar, is suspected to have a magnetic field trillions of times stronger than Earth's. So when that ultra-dense object changes or ruptures, an extraordinary amount of energy might be unleashed into space.  "It has to be powerful," said Tendulkar. What's more, these repeating radio waves show signs of "scattering" — which suggests that the waves traveled through a turbulent patch of space filled with interstellar gases. That means the signals likely came from a place where there's a denser clump of stuff, like the remnants of an exploded star (called a supernova), University of Toronto astronomer and study coauthor Cherry Ng said in a statement.  Although there are only hypotheses for how these potent radio waves form, natural cosmic phenomena are the exceedingly likely answer — as opposed to smart aliens.  "I can understand the public's imagination would go that way [aliens], but there are a lot of simpler explanations than extraterrestrial intelligence," said Tendulkar. Astronomers and astrophysicists are eager for the new telescope, CHIME, to pick up more signals and gather more evidence. Or as Tendulkar put it, to "paint a broader picture" of what might be happening out there, in the depths of intergalactic space. WATCH: Ever wonder how the universe might end?

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Rescuers detect possible sign of life under quake-hit hotel

Rescuers detect possible sign of life under quake-hit hotelPALU, Indonesia (AP) — A French rescue team said Thursday it has detected a possible sign of life under the rubble of a hotel in Indonesia's Sulawesi island nearly a week after it was hit by a powerful earthquake and tsunami, as the death toll rose to more than 1,500.

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Test can detect HIV within a week of infection: researchers

The Spanish National Research Council has technology that "detects the protein at concentrations 100,000 times lower than in current techniques," and "during the first week after infection"Spain's top research institution said Thursday it has patented an HIV test that can detect the AIDS-causing virus within a week of infection, the fastest yet. A "biosensor" developed by scientists of the Spanish National Research Council (CSIC) detects the p24 antigen, a protein attached to the HIV virus, in human blood, the council said in a statement.

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Mammograms May Detect More Than Just Breast Cancer

By Dennis Thompson
HealthDay Reporter

THURSDAY, March 24, 2016 (HealthDay News) — The standard breast cancer screening test, mammography, may offer a surprising extra benefit—the ability to check heart health, new research suggests.

When radiologists look at mammograms for signs of breast cancer, they can also see calcium deposits that have built up in the arteries that supply blood to the breasts, said researcher Dr. Laurie Margolies. She’s director of breast imaging at Mount Sinai Hospital in New York City.

Women with large calcium deposits in their breast arteries have likely developed similar deposits in the arteries leading to the heart. These deposits are considered a very early sign of heart disease, the study authors said.

And, calcium deposits in the breast arteries appear to be as strong a risk factor for heart disease as high cholesterol, high blood pressure, and diabetes, the researchers said.

If follow-up studies confirm these findings, a woman’s mammogram could become a “two-fer” screening that covers both breast cancer and heart disease, Margolies suggested.

“By adding no cost, no radiation and very little time, we can find calcification in the vessels,” Margolies said. “This is potentially practice-changing in how radiologists read and report mammography. It’s a revolutionary way to assess risk.”

Results from the study are scheduled to be presented April 3 at the American College of Cardiology’s annual meeting, in Chicago. Findings presented at meetings are generally viewed as preliminary until they’ve been published in a peer-reviewed journal.

The study included nearly 300 women who had digital mammography. The women also all had a separate, unrelated CT scan within a year of their breast cancer screening, Margolies said.

The researchers reviewed the digital mammograms for signs of calcium deposits in the breast arteries. These deposits show up bright white in x-ray scans, Margolies said. About 42 percent of women in the study had these deposits.

“We see those arteries very well on mammography, and if some arteries are calcified we see their calcifications very well,” Margolies explained.

The research team compared those results to the CT scans. The CT scans showed whether the heart’s arteries were also calcified.

The investigators found about seven out of 10 of the women who had evidence of breast artery calcification on their mammogram were also found to have calcium deposits in their heart arteries.

Young and middle-aged women in danger of heart disease could particularly benefit from this “add-on” to their routine mammogram, said cardiologist Dr. Stacey Rosen. She’s a spokeswoman for the American Heart Association and vice president of women’s health for the Katz Institute for Women’s Health at Northwell Health in New Hyde Park, N.Y.

In the study, about half of the women younger than 60 with heart artery calcification also had calcium deposits in their breast arteries, the findings showed. If a younger woman had breast artery calcification, there was an 83 percent chance she also had calcium deposits in her heart arteries, the study revealed.

“We know younger women don’t appreciate their risk for heart disease as much as they should, and the preventive opportunities start young,” Rosen said.

Margolies said radiologists should consider adding an assessment of breast artery calcification in their breast cancer screening reports. She compared it to recent law changes that require radiologists to report breast density findings to mammography patients.

“That was something that was seen by radiologists all the time but not reported, and women were clamoring to have that information,” Margolies said. “I could envision this as the very same type of practice-changing revolutionary way of reporting and assessing risk.”

Radiologists also can reach out to cardiologists and specialists in women’s health, forming preventive health partnerships. Radiologists could share data from mammograms to help protect patient’s health, Rosen said.

“Mammography reports are very structured in certain states, so the ability to potentially push the information into a patient report may at this time be limited,” Rosen said. “But letting breast imagers know about these important findings may raise more opportunities for prevention.”

More information

For more about heart disease in women, visit the U.S. National Heart, Lung, and Blood Institute.

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