For example, radiation to the head and neck area can lead to problems with dry mouth and trouble swallowing. Radiation to the bone marrow can lead to long-term problems with blood cell counts and even a disease called plastic anemia.
In general people are afraid of radiation, and that is a good thing. It can, and in many places, does keep you warm on a cold winter day.
Radiation measurements can get complicated, but a simplified and generally correct summary is this. REM stands for Roentgen Equivalent for Man.
Most of the time we are measuring radiation in thousandths of a REM. If you live on the East coast of the USA, you get about 50-60 milligrams of radiation a year from natural sources.
If you live in Denver, built on top of granite and a mile a high, you get about 150 milligrams a year. You get more if you are an airline pilot and spend a lot of time at 35,000 feet.
Alpha and Beta rays are easily stopped by paper, clothes and skin. It takes a few inches of lead or a few feet of concrete and dirt to slow or stop them.
A detonating nuclear device will produce a LOT of gamma rays. Even if the blast doesn’t get you, the dose of radiation could be very high, and perhaps fatal.
Gamma Rays are the most dangerous type of radiation. It’s just taking some radioactive material and blowing it up with conventional explosives.
It will not go far, and it will spread highly concentrated material over a wide area, and thus greatly reduce the radiation. More so than healthy cells, and that is why many cancer patients are given enough radiation to make them sick.
If 100 people get a sudden dose of 350 rems of radiation, about 3.5 sieverts, then about half of them will die in 60 days. Experts call this the walking dead phase.
Gamma Ray exposure in the USA from Nat. The latest Science from the National Academies is that 100 milligrams per year over a lifetime will cause one cancer in every 175 people.
Suppose someone sets off a dirty bomb, and it will give me 100 mill rems a year if I stay in the house I love. Sources: http://www.epa.gov/rpdweb00/rert/radfacts.html Dr. Robert Muller Lecture on Radiation U. Cal.
Berkeley and PHYSICS FOR FUTURE PRESIDENTS also by him-on Amazon BTW http://www.beyondweird.com/survival/1hrrads.html National Academies of Science, Prepublication Copy, Health Risks from Exposure to Low Levels of Ionizing Radiation BEAR VII Phase 2, June 29, 2005, page 500 Table 12-9.
A trip to the dentist can be nerve wracking enough without being asked to don a heavy protective apron while having x-rays taken. Coughs that won't quit may necessitate chest x-rays, while falls on pavement or concrete mean x-rays of our arms, legs, wrists, or even heads.
First, it's important to remember that we're exposed to small amounts of radiation as part of our everyday lives. According to the American College of Radiology, radon gas in our backyards accounts for the majority of our background radiation exposure.
People living in mountainous regions get about 50 percent more background radiation than those near sea level. Second, different parts of the body have very different degrees of sensitivity to radiation, meaning that your risk varies depending on what's being x-rayed.
X-ray technologists are trained to deliver x-rays safely and with the minimum amount of radiation necessary, but if you're concerned, definitely speak to your doctor about the possibility of using another kind of test. Since radiation doses are cumulative over a lifetime, it's a good idea to maintain accurate records of any x-raysyou've had, especially if you change doctors.
The impact of radiations depends on their dose and frequency, a patient’s age and sex, and type of scan. Radiations used in regular scans are 100 times weaker than harmful levels.
By passing rays through the human body we get exact images of the insides, helping accurately diagnose the severity of a disease. An MRI scan uses magnetic field and radio waves to produce images of the internal structure of the body.
As there is no radiation involved in this procedure, it is a safe (and painless) method to scan almost anybody part. The low level of radiation a patient is exposed to during these scans is measured in units called millisieverts (MTV).
According to the United States Nuclear Regulatory Committee, a person’s average annual radiation exposure from natural sources is about 3.1 MTV. Experts reckon the safety of scans more in terms of radiation dose and frequency than numbers.
The amount of radiation that a particular organ receives during a CT scan depends on the number of scans undergone, the size of the patient, the specific design of the scanner being used, and the rotation or exposure time. Around 100 CT scans lead to an effective dose of 600 MTV, which would pose a high risk of cancer.
A study by Smith-Bindman et al., however, concluded that radiation doses from commonly performed diagnostic CT examinations are higher and more variable than generally cited. A Harvard Teaching Hospital expert sums up the safety angle: “Radiation-induced soft tissue injury occurs at about 2000 may and higher.
The radiation dosage one is exposed to may usually be much below the safe parameters and these numbers shouldn’t unnerve us just yet. But it is definitely a good idea to understand the effects of radiation on the body and take precautions to avoid or minimize exposure wherever possible.
Could the ray kill your baby If I'm 4-2 Weeks pregnant? You had the lead vest on which would, for the most part, protect the baby from being impacted by the radiation.
(which by the way is illegal. You 're 15, he's 18. That's considered statutory rape even if you were willing.) And then this guy she's dating, you come to find out, is into drugs hardcore.
He can be a loser and stick with his drugs and let his life fall apart. So you can provide a healthy environment for your unborn baby, and for yourself.
Normal procedure is to take a ray of your spine to verify that things are going okay after the surgery. I don't know if your surgeon would be willing to skip the rays until after the baby is born.
Over the years, my curve increased, so I had my spine fused at age 39. “Unborn children are typically exposed to 0.5–1.5 rads following most types of abdominal or lower back x-rays of the mother, and x-rays in distant body parts generally result in exposures that are 10–100 times lower.
Again, the NRC considers 2 rads to be the lowest exposure level for possible damage to unborn children” I don't think it's likely but it definitely is possible especially if they didn't cover your abdomen.