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Acute (early) radiation syndromes occurs : With a large dose (100 R or more) to the whole body Long term radiation effects will occur : Years later (25-30 years) There are 2 categories of long term effects : Genetic and somatic Genetic Effects of Radiation : changes that are passed on to the next generation due to radiation Somatic effects of radiation : Damages that occur to the person that received the radiation The dose limit for a technologist during pregnancy is _____. : .5 mSv/month 2 5 mSv in a 9 month period Dose limit for occupational workers : 20 mSv The dose limit for the general public is : 5 mSv Dose limit for people in training <18 : 1 mSv Due to continuing long-term studies that show radiation is three to four times more damaging than originally thought, the NCRP now suggests that the new annual occupational dose limit be set at : 20 mSv the major source of radiation to an occupational worker is : the patient, because of the patien there is scatter lead shields should be no less than what thickness : 0.25mm lead shields of 0.25mm thickness will absorb 3 : 97% of all radiation below 50kv 66% of a 75kv beam 51% of a 100kv beam lead shields of 0.5mm thickness with absorb : 99% of a beam below 50kv 88% of a 75kv beam 75% of a 100kv beam patients can be protected by 2/3 ALARA concepts which are : time and shielding distance is the other but that does not apply as the patient has to be in the primary field of view 2 other concepts to protect a patient is : communication and collimation autonomy : the right of all persons to make a decisions free from external pressure beneficence : doing goo