How often is it really safe to have a ct scan for kidney stones?

Not often: Having a ct scan exposes a person to low doses of radiation. Most people will have at least one ct scan in there lifetime, which is not harmful. However, people with chronic conditions, like stones, may be exposed to radiation from imaging tests like ct scans multiple times in their life, which can be harmful. Trying to use alternative methods like ultrasound, if possible, is a good option.

Should limit: Ct scans use ionizing radiation which is known to cause damage to tissues. There have been no studies proving that it causes cancer, but it is assumed and radiologists try to limit the number of cts patients get. We don't know what a safe amount of radiation is, so we try to use it sparingly. Ultrasound can be used safely to evaluate for complications of renal stones.