There is no safe level of ionizing radiation.
Ionizing radiation is a form of energy which that produces charged particles, known as ions, which can interact with and damage living cells. As such, exposure to excessive levels of ionizing radiation can be dangerous and increases the risk of developing cancer, disease and other health issues. It is for this reason that the level of radiation used in medical tests should be carefully monitored and kept to a safe level.
Unfortunately, there is very little, if any, monitoring and control over the amount of radiation we are exposed to in medical tests.
The level of ionizing radiation used in medical tests is supposed to be determined by the International Commission on Radiological Protection (ICRP). The ICRP sets the maximum radiation dose that is considered safe, which will vary depending on the type of test being conducted and the type of radiation used. For example, the maximum radiation dose for a chest X-ray is 0.02 mSv, while the maximum dose for a CT scan is 16 mSv. Although these limits are set, there's no one monitoring the number of CTs or X-rays a person gets. Since ionizing radiation is cumulative, there should be.
It is also important to note that radiation levels can vary depending on the type of equipment being used. This is why it is essential to ensure that the equipment is regularly tested and maintained to ensure that the radiation levels remain within safe limits. This is especially important in the case of older equipment which may not be as accurate or as up to date as newer models.
In addition to monitoring radiation levels, it is also important to consider the type of test being conducted and the potential risks associated with it. For example, some tests may require higher levels of radiation than others, making it important to weigh the potential benefits against the risks. This is often not done. It is also important to consider whether the test is necessary and to consider other options if the risk of radiation exposure is deemed too great. When there is an alternative, like ultrasound or MRI that can be used, it should be. Unfortunately, it isn't in many cases.
Become your own advocate. If you doctor says you need a CT, ask them if there's an alternative test, like MRI or ultrasound that can be done instead. This will lower your risk for cancer, heart disease and many other health issues.
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