| Radiation in monitoring can also be used to..... | protect dental radiographer, It can be both equipment &and personnel |
| The use of radiation monitoring can.....? | Identify excess occupational exposure. |
| 1- Equipment monitoring | Dental x-ray machine should be monitored against leakage radiation, this can be achieved by using a film device that can be obtained from the manufacturers of the x-ray equipment. |
| 2/personal monitoring | Requirements of personal dosimeter(*should be easy to carry)(*light weight)(*made of durable material)(*can detect wide range of doses even very small one) (*performance is not affected by weather condition or mechanical shock)(*Available and in expensive) |
| personal monitoring device | -film badges |
| PerSonal monitoring device | thermoluminescent dosemeters (TLD) |
| personal monitoring device? | ionization chambers---optically stimulated luminescence (OSL) dosimeters |
| Film badges | they consist of a blue plastic frame containing a variety of different metal filters and a small radiograph films which react to radiation. |
| Film badges they are worn ......? | outside of the clothes, usually at the level of reproductive organ for 1-3 months before being processed. |
| film badge is the most common form of personal monitoring...... | device currently in use |
| what are the advantages of Film badges? | provides a permanent record of dose received,,,may be checked and reassessed at a later date |
| advantages of film badge? | Can measure the type &energy of radiation encountered,,,,simple,robust and relatively inexpensive |
| Disadvantage of film badge? | No immediate indication of exposure all information is retrospective,*processing is required which may lead to Error,*the badges are prone to filter loss. |
