On the dosimetry report I see columns for Dose labeled “DDE”, “LDE”, and “SDE”. What do these categories mean?
DDE = Deep Dose Equivalent LDE = Lens (of the eye) Dose Equivalent SDE = Shallow Dose Equivalent Different parts of your body vary in their radiosensitivity (susceptibility to damage). Since the type and energy of the incident radiation affect the penetration depth within your body, we are concerned with both the amount and location of ionizing energy deposited in your body. The term “dose equivalent” means that it has already been corrected for the type and energy of the radiation exposure. DDE is a measure of the amount of ionizing radiation dose received by tissues at a depth of 1,000 mg/cm2 or more. Similarly, LDE is measured at 300 mg/cm2, and SDE at 7 mg/cm2. At low doses, we tend to think of DDE as the dose to your (blood forming) organs, and SDE as the dose to your skin. Return to the top of this page.
