Review Notes for the RADIOGRAPHY EXAM Appelton Reviewer A&R Question & Answer 1 Chapter 3: Radiation Protection (150 Q & Ans.

Review Notes for the RADIOGRAPHY EXAM Appelton Reviewer A&R Question & Answer 1 Chapter 3: Radiation Protection (150 Q & Ans.) 1. The dose of radiation that will cause a noticeable skin reaction is referred to as the (A) linear energy transfer (LET). (B) source-to-skin distance (SSD). (C) skin erythema dose (SED). (D) source-image distance (SID). —————————————————————————  Erythema is the reddening of skin as a result of exposure to large quantities of ionizing radiation. o It was one of the first somatic responses to irradiation demonstrated to the early radiology pioneers.  The effects of radiation exposure to the skin follow a nonlinear, threshold dose-response relationship.  An individual's response to skin irradiation depends on the dose received, the period of time over which it was received, the size of the area irradiated, and the individual's sensitivity.  The dose that it takes to bring about a noticeable erythema is referred to as the skin erythema dose (SED). (Bushong, p 488) Ans. C 2. What safeguards are taken to prevent inadvertent irradiation in early pregnancy?