Historian Matthew Dallek looks at the history behind the Office of Civilian Defense, the country's first agency for homeland security, and the competing visions of those tasked with spearheading the department: New York City Mayor Fiorello La Guardia and First Lady Eleanor Roosevelt.
New studies indicate overexposure to radiation from CT scans could increase the risk of cancer and cause thousands of deaths. What the studies show and alternative diagnostic tests.
- Dr. Donald Frush chair of the American College of Radiology Pediatric Imaging Commission, Professor of Radiology and Pediatrics at Duke University Medical Center, part of an effort at the International Atomic Energy Agency (IAEA) looking at radiation from medical imaging scans
- Dr. Rebecca Smith-Bindman Professor UC San Francisco Departments of Radiology and Biomedical Imaging, Epidemiology and Biostatistics, Obstetrics Gynecology and Reproductive Sciences Visiting Research Scientist of Radiation Epidemiology Branch, National Cancer Institute
- Dr. Peter Shields Deputy Director of the Lombardi Cancer Center at Georgetown University, a professor in Oncology and Medicine, a hematologist at Georgetown University.
- Dr. Rita Redberg a cardiologist specializing in heart disease in women, Professor of Medicine at UCSF School of Medicine, Editor of Archives of Internal Medicine
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