February 17, 2011 |
Radiation from the largest solar flare in four years is expected to reach the Earth Thursday and Friday, potentially interfering with communication and navigation satellites and disrupting ground-based communication networks and power grids. The rain of charged particles from the so-called coronal mass ejections, or CMEs, should also enhance the northern lights, also known as the Aurora Borealis, making them both more prominent and visible farther south, perhaps even into the northern tier of the United States, experts said.
September 28, 1990 |
After hearing emotional appeals to right "one of the great wrongs that we Americans committed against our own citizens," the House gave final congressional approval Thursday to legislation that compensates radiation victims of nuclear weapons testing and uranium mining.
March 17, 2011 |
With reports that a radiation plume from the Fukushima Daiichi nuclear plant could reach Southern California as soon as Friday, worried citizens have been hoarding potassium iodide pills, wondering if it's OK to go outside and otherwise fretting over an invisible, and somewhat unpredictable, threat. But all that worrying might cause more harm than the radiation itself, experts say. Here are some answers to common concerns. How much radiation do scientists think will arrive here?
June 8, 2010 |
A single dose of radiation during breast cancer surgery is as effective as three to six weeks of daily post-operative radiation for many women with early stage breast cancer, according to the first results from an ongoing study of more than 2,000 women. Most women undergoing a lumpectomy now have to visit a radiation center every weekday for at least three weeks following their surgery, a treatment that is, at best, inconvenient for working women and, at worst, debilitating for older ones.
March 15, 2011
Everyone is exposed to some radiation. It's the level of exposure that determines whether there's any harmful effect. But how much radiation is a lot? Here are a few numbers for comparison. (A microsievert is a unit that measures the biological effects of radiation.) Limit on whole-body exposure for a radiation worker for one year: 50,000 microsieverts One year's worth of exposure to natural radiation from soil, cosmic rays and other sources: 3,000 microsieverts One chest X-ray: 100 microsieverts One dental X-ray: 40-150 microsieverts One mammogram: 700 microsieverts CT scan (abdomen)
March 18, 2011 |
Radiation levels in California remain normal, air quality officials said Friday morning. "As far as our monitors go, we have not detected any increases beyond what you'd expect historically. Nothing you can attribute to Japan," said Philip Fine, atmospheric measurements manager of the South Coast Air Quality Management District, the smog control agency for Los Angeles, Orange, Riverside and San Bernardino counties. Fine said he has been spot-checking radiation monitor data throughout California and the West Coast in the past few days, and nothing abnormal has shown up. Other experts have said they do expect small amounts of radioactive isotopes from the stricken Fukushima Daiichi power plant to blow over to California as soon as Friday, but that they expected that the radiation would be well within safe limits.
August 4, 2010
If people weren't afraid of CT scans before now, it might just be a matter of time until they are. Or perhaps until lawmakers take matters into their own hands. L.A. Times staff writer Alan Zarembo wrote Tuesday of local hospitals that said they were simply following the manufacturer's recommendations: " Two More Hospitals Report CT Scan Radiation Overdoses ." Judith Graham wrote recently in the Chicago Tribune about attempts to protect children from excess radiation: " Clamping Down on CT Scans for Kids ."
CALIFORNIA | LOCAL
November 10, 2009 |
Cedars-Sinai Medical Center officials said Monday that 260 patients had been exposed to high doses of radiation during CT brain scans during an 18-month period, up from the hospital's original estimate of 206 in September. A review by the hospital also found that about 20% of the patients received exposure directly to the lenses of their eyes, which puts them at a higher risk for cataracts, said Simi Singer, a spokeswoman for the Los Angeles hospital. Of the newly identified cases, 47 patients had died by the time the hospital began contacting victims -- a reflection, officials said, of their serious illnesses, not the radiation exposure.
CALIFORNIA | LOCAL
August 3, 2010 |
Two California hospitals where patients were exposed to excessive levels of radiation during CT scans had programmed their scanners according to the manufacturer's specifications, officials at both hospitals said. Los Angeles County-USC Medical Center and Bakersfield Memorial Hospital are the latest additions to a list of California hospitals where overdoses occurred during CT brain perfusion scans. In both cases, the scanner in question was made by Toshiba. "We called Toshiba to give us the protocol," said Dr. Stephanie Hall, the chief medical officer at County-USC, where two patients received overdoses shortly after the hospital began doing the scans last fall.
March 18, 2011 |
China tried to quell panic buying of iodized salt Thursday after grocery stores across the country were emptied of the seasoning by hordes of people hoping to ward off radiation poisoning after the nuclear accidents in Japan. The clamor for salt reportedly started after rumors spread, possibly by cellphone text messaging, that China would be hit by a radioactive cloud from Japan's Fukushima No. 1 (Daiichi) nuclear plant, which had been badly damaged during last week's earthquake and tsunami.