CAMRT (Patient Care) 271 Questions and Answers(A+ Solution guide)

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 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 scatterlead shields should be no less than what thickness - 0.25mm lead shields of 0.25mm thickness will absorb - 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 good double effect - a situation in which an action has both a positive effect and a negative effect ex. xrays fidelity - keeping promises justice - all treated equalnonmaleficence - do no harm and prevent harm paternalism - A policy of treating subject people as if they were children, providing for their needs but not giving them rights