Chapter 5 Sherer and Chapter 38 Bushong: Radiation Monitoring Devices and Dose Management for the Technologist

A personal monitoring device is required whenever the exposure rate to a worker is likely to be at least _________% of the annual occupational dose

10

In fluoroscopy, the dose outside the apron may be up to _______ times that recorded under an apron

20

how many types of personnel monitoring devices are there?

4

Whenever the letter _____________ appears under the current monitoring period or in the cumulative columns on a radiation monitoring report, it signifies that an equivalent dose below the minimum measurable radiation quantity was recorded during that time.

M

What type of dosimeter? * lithium fluoride * Can be worn up to 3 months * Heating process destroys stored radiation dosages * Response range is from 50 KeV to 50 MeV * 5 mrem minimum reading

TLD

The Council of Radiation Control Program Directors (CRCPD) recommends that general monitoring devices are to be worn at the _____________

collar

An ____________ dosimeter, which is commonly a TLD ring, may e used as a second monitor when performing fluoroscopic procedures that require the hands to be near the primary x-ray beam

extremity

What type of dosimeter? * Change monthly * Requires a control badge with each batch * Sent to manufacturer for reading and permanent storage * Reads from 10 mrem to 500 rem.

film badge

When in contact with ionizing radiation, ______________ respond because of the charged particles that are produced y the radiation interacting with and subsequently ionizing the gas (usually air) in the detector. These instruments measure either the total quantity of electrical charge resulting form the ionization of the gas of the rate at which the electrical charge is produced.

survey instruments

T/F: When a person leaves a job, it is required by law that the individual be given a copy of their last dosimetry reading or sent to their new employer

true

T/F: personnel monitoring ensures that occupational radiation exposure levels are kept well below the annual effective dose limit.

true

T/F: x, gamma, beta radiation is monitored by dosimeters

true