Chapter 5: pt 3 types of dosimeters continued

What are the two different types of pocket dosimeters?

1. Self reading ( w/ electrometer) 2. Non-self reading

On termination of employment, a radiographer must recurve a copy of: A. All personal health care records kept by the employer B. His or her occupational exposure report C. All employment records D. Incident reports in which the radiographer was involved

B. His or her occupational exposure report

T or F: special charging unit is required for OSL dosimeters and must be charged before use so fiber indicator reads zero

False, required for pocket dosimeters

graphic plot that shows the relationship of light output (emitted thermoluminescence intensity) to temperature variation -used for TLDs

Glow Curve

Fairly new device that provides radiation workers with an immediate measurement of radiation exposure AND includes features such as long term exposure tracking

Personal digital ionization dosimeter

The following describes what type of dosimeter: Contains a small ionization chamber that responds to radiation by producing an electrical charge. The charge is delivered to a semiconductor component that can store small amounts of electrical charge. •A small voltage is delivered to a transistor "gate" providing a digital "readout" that reflects radiation exposure when connected to a computer.

Personal digital ionization dosimeter

What type of dosimeter gives an instant readout of dose information when connected to a computer via a USB and has a graphical representation of: Radiation exposure summary History detail report Who Has Not Read Their Device

Personal digital ionization dosimeter

What type of dosimeter resembles a flash drive

Personal digital ionization dosimeter

Dosimeter that resembles an ordinary fountain pen

Pocket ionization chamber

The following describes what type of dosimeter?: When exposed to x- or gamma radiation, positive electrode becomes ionized and discharges in proportion to the amount of radiation it was exposed to

Pocket ionization chamber

What type of dosimeter is the most radiosensitive?

Pocket ionization chamber

What type of dosimeter was historically used to provide immediate exposure readouts for radiation workers who worked in high exposure areas (e.g., cardiac cath labs) but has since been replaced by microStar

Pocket ionization chamber

What type of dosimeter: contains two electrodes (+ and - charged) Quartz fiber forms part of the + electrode and functions as indicator on reading scale

Pocket ionization chamber

health care facilities w/ a well-structured radiation safety program have a _______________ to receive and review personnel monitoring reports

Radiation safety office (RSO)

The following describes the "reading" of what personnel monitoring device: electrons in sensing material absorb the X-ray energy. Electrons are excited to higher energy levels and become trapped. Special heating process returns electrons back to original state and emits light proportional to the radiation interaction.

TLD

Measures the amount of ionizing radiation that a TLD badge has been exposed to

TLD analyzer

What does the letter "M" under the current monitoring period indicate?

That an EqD below the minimum measurable radiation wanting was recorded

What type of dosimeter resembles a traditional film badge on the outside?

Thermoluminescent dosimeter (TLD)

T or F: the Energy emitted from a TLD that has gone through the heating process is equal to the difference between the electron-binding energy of the orbital levels

True

T or F: when changing employment, the radiation worker must convey the data pertinent to their accumulated permanent EqD to the new employer do that this information can be placed on file

True

What is the sensing material used for TDLs?

lithium fluoride (Lif)

Lists the deep, eye, and shallow occupational exposures of each covered person on a monthly, quarterly, year to date, and lifetime equivalent basis to meet state and federal regulations

personnel monitoring report