"You can have a patient from the hospital with abdominal pain as an example, and you can run him through every high-tech equipment, CT scan, MRIs -- it's unlimited, " Zelt said.
Miller of Johns Hopkins University School of Medicine in Baltimore, Maryland and her colleagues looked at 291 patients who were scheduled for an angiogram but also had a 64-slice CT scan.
The radiation exposure from a Mars journey is similar to getting a full-body CT scan every five or six days, said lead researcher Cary Zeitlin of the Southwest Research Institute in Boulder, Colo.
In Dr. Xu's lab, virtual patients are exposed to virtual radiation in doses similar to that of a CT scan or cancer-radiation treatment.
By the time Mellinger arrived at Landstuhl, the doctors already had a thick file with his medical records, including x-rays and a CT scan.
After the stress test, your cardiologist may or may not opt to have you undergo another type of CT test called a Calcium-score Screening Heart Scan.
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We observed each child in intensive care for at least twenty-four hours and got a repeat CT scan.
Additionally, I have a chest x-ray every six months or so and a yearly CT scan.
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It's said the process is similar to how a CT scan functions, but uses visible light instead of X-rays.
An X-ray showed that he had pneumonia, and a CT scan revealed something even scarier: His right lung was filled with a thick, gelatinous fluid.
About half of children who go to the ER with head injuries get this radiation-heavy scan, and clinical observation first could help some who don't really need a CT avoid it.
The radiation astronauts would face on a round trip would be comparable to getting an abdominal CT scan "about once every five days, " said Cary Zeitlin, principal scientist for the NASA-led Martian Radiation Environment Experiment.
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