Radiation Safety Flashcards
State 4 body tissues or organs which have a tissue weighting factor
identified under the ICRP 60 regulations
Gonads Bone Marrow Colon Lung Stomach Bladder Breast Liver Skin
List 4 advisory bodies on radiation protection
International Atomic Energy Agency International Commission on Radiological Protection European Atomic Energy Community Health Protection Agency National Radiological Protection Board
Identify the TWO areas of radiation protection which are regulated
under The Ionising Radiations Regulations 1999
Public and Workers
Risk assessments are a vital aspect of radiation protection.
Briefly explain TWO elements of a risk assessment that can help to provide radiation protection to employees or other persons
Help to provide training and new information and equipment.
Identify the nature of the risk to employees and patients
Steps taken to prevent accidents
Explain the principles of operation of both the 28 day rules
and the 10 day rule
Ask the Patient if you are pregnant? find out when the last Menstruation Period, if its within 28 days then proceed with Examination, not within last 28 days then don’t proceed with the Examination.
If you are unsure, apply the 10 day rule. If Last Menstrual Period has been in last 10 days, then proceed with exam and if it hasn’t been within 10 days then don’t proceed.
if it was in the last 10 days then the chance of pregnancy is minimal.
State ONE example of a ‘high dose’ radiological examination /procedure
CT of Abdomen and Pelvis
Above 10Gy
State ONE example of a ‘low dose’ radiological examination /procedure
General Radiography not near uterus, below diaphragm and above knees.
Below 10Gy
Briefly describe TWO actions which must be undertaken in the
event of a patient receiving a major overexposure of radiation
Employees make an Immediate Investigation, if exposure is confirmed inform the Health and Safety Executive, and arrange a more detailed investigation.
What PPE is provided for a reduced radiation exposure?
Lead Aprons
Gloves
Thyroid Shields
What are Deterministic Effects?
They are Tissues Reactions, They are a result of a large dose of Radiation.
What are Stochastic Effects?
Low level Radiation over a long period of time.
Stochastic Effects increase as the dose increases
What are Genetic Effects?
They are damages to Genes and Chromosomes, that affect future Generations.
What is Absorbed Dose?
The amount of deposited by Energy Absorbed by a Mass
Unit is Gy
What is Equivalent Dose?
Equivalent Dose is Calculated for Individual Organs.
Multiply the Absorbed dose and Tissue Weighting Factor.
Sievert(Sv)
What is the Effective Dose?
The dose given to the whole body that would produce the same biological effect as the equivalent doses received by each organ or tissue.
Sievert(Sv)
