But there is no conclusive study that links a rise in cancer to cumulative radiation doses of less than 100 millisieverts.

For every additional 10 millisieverts (mSv) in cumulative radiation dose received, the study found, the risk of developing cancer rose by 3 percent.

The annual cumulative radiation dose in one district of Okuma was estimated at 508 millisieverts, which experts believe is high enough to increase the risk of cancer.

Researchers have estimated that children exposed to a cumulative radiation dose of 100 mSv or more could see their lifetime cancer risk go up by more than 2 percent.

Some doctors suggested that tracking a patient's cumulative radiation dose in their medical record, similar to how cholesterol or hemoglobin is recorded, may help prevent unnecessary radiation exposure.

The film badge dosimeter, or film badge, is a personal dosimeter used for monitoring cumulative radiation dose due to ionizing radiation.

At Oak Ridge, we found positive associations between cancer mortality and cumulative radiation dose, with this association primarily due to radiation doses that were received at older ages.

On the other hand, people with chest pain often are admitted to a hospital and then given repeated tests over a number of days that can add up to a high cumulative radiation dose.

NASA limits astronauts' increased cancer risk to 3 percent, which translates to a cumulative radiation dose of between about 800 millisieverts and 1,200 millisieverts, depending on a person's age, gender and other factors.

BOSTON, May 6 (UPI) -- Physicians should review a patient's computed tomography imaging history and cumulative radiation dose before doing another CT exam, U.S. researchers say.

Dr Szmigielski reminded the workshop that epidemiological studies of RF/MW-exposed personnel and residents should not only be related to power density measurements (PD) but also to cumulative radiation dose (RD).

Studies of patients with tuberculosis who were treated with pneumothorax and monitored with frequent fluoroscopy, with resulting cumulative radiation doses of about 85 rads (0.85 Gy) staggered over time, indicated that any lung cancer risks associated with this exposure pattern, if they exist, are difficult to detect.