Unit 314 Radiography (Dental Nursing) Questions & Answers Solved 100% Correct!!

Ionising Radiation Regulations (1999) - Answer-Protection of staff involved in the use of ionising radiation Ionising Radiation (Medical Exposure) Regulations (2000) - Answer-Protection of patients undergoing radiographic procedures Local Rules - Answer-Kept in radiation protection file Main points need to be displayed in prominent place beside x-ray machine Name of RPS Names of staff qualified to take x-rays Contingency plan Controlled area (1.5m) and safety zone (2m) around machine head Quality Control Systems - Answer-Ensures consistent, good quality radiographs Repeat exposures avoided (ALARP) Regular auditing of films, staff training and servicing Necessity for exposure, diagnostically adequate films, minimum exposure, film processing, film mounting and viewing Staff Training Records - Answer-GDC registration + radiography qualification = can take (e.g. dentist, hygienist, specialised nurse) Processing has to be done by an adequately trained person (e.g. nurse) Legal Person - Answer-Owns ionising radiation equipment or owns responsibility for it Appoints an RPSRadiation Protection Supervisor (RPS) - Answer-Appointed member of practice, usually full time (e.g. dentist, lead nurse) Ensures staff compliance with local rules Radiation Protection Advisor (RPA) - Answer-Usually a contracted radiation physicist Advises the RPS on radiation protection Which 3 things can happen when x-rays hit human tissue? - Answer-1) Passes through unchanged and absorbed by surroundings 2) Hits atoms of tissue and destroys cells 3) Hits atoms of tissue and DNA of cell, changing its structure and causing a mutation What 2 kinds of biological consequences of radiation exposure are there? - Answer-1) Somatic = affects the individual exposed 2) Genetic = affects descendants as cells are altered in reproductive system What are the 2 kinds of somatic consequences of radiation exposure? - Answer-1) Deterministic = e.g. cataract of eye lens, skin redness, sickness, hair loss - proportional to dose 2) Stochastic = e.g. leukaemia and other cancers - means 'chance' What are the 3 kinds of intra-oral radiographs? - Answer-1) Bitewing (horizontal or vertical) 2) Periapical 3) Anterior Occlusal