RAD Q2

The metal filters contained in a film badge personnel dosimeter are generally composed of which of the following materials?

Aluminum or copper

Which component(s) of the Geiger-Muller detector alert(s) the operator to the presence of ionizing radiation?

An audio amplifier and speaker

Among physicians, cancer deaths attributed to x-ray exposure were reported as early as:

1910

Which of the following statements is correct? 1​ C/kg of dry air=1 roentgen2.58 × 10−4 2.58 x 10-4 C/kg of dry air = 50 roentgen 1 C/kg of dry air=1 gray2.58×10−4 2.58 x 10-4 C/kg of dry air = 10 Sievert

1​ C/kg of dry air=1 roentgen2.58 × 10−4

Alpha particles have a radiation weighting factor (WR) that is numerically equal to:

20

What is the maximum period of time that a thermoluminescent dosimeter (TLD) may be worn as a personnel dosimeter?

3 months

Which of the following rem values equals 35 mSv?

3.5 rem

If a patient receiving x-ray therapy treatment receives a total dosage of 6000 rads, the dosage may be recorded as _____________ if the SI system is used.

6000 cGy

Of the following numerical choices, which is the effective atomic number (Zeff) of soft tissue?

7.4

Which of the following should be part of the employment record of all radiation workers?

A record of exposure recorded by personnel dosimeters

What should be given to a radiation worker on termination of employment?

A summary of an occupational exposure report

Which of the following items is not a basic component of the film badge dosimeter?

Charged electrodes

Which of the following is essentially the sum total of air kerma over the exposed area of the patient's body surface?

Dose area product

Which of the following instruments generally has a check source of a weak, long-lived radioisotope located on one side of its external surface to verify its constancy daily?

Geiger-Muller detector

Which of the following units are not SI units? I. Roentgens II. Coulombs per kilogram, grays, Sieverts III. Rads and rems

I and III

Of the following, which are disadvantages of using pocket ionization chambers as personnel dosimeters? I. Mechanical shock causes pocket chambers to discharge. II. A permanent legal record of personnel exposure cannot be obtained with a pocket dosimeter. III. False high readings may be obtained if the pocket dosimeter is not read each day.

I, II, and III

Three different filters are incorporated into the detector packet of the optically stimulated luminescence (OSL) dosimeter. These filters are respectively made of: I. aluminum. II. copper. III. molybdenum. IV. rhenium tungsten. V. tin.

I, II, and V only

As the intensity of x-ray exposure of the air volume increases, the number of electron-ion pairs produced:

also increases

Of the following personnel monitoring devices, which device could be used to provide immediate exposure readout for a radiation worker working in a cardiac catheterization laboratory?

Pocket ionization chamber

Which of the following personnel dosimeters resembles an ordinary fountain pen externally?

Pocket ionization chamber

Which of the following effects must be measured to determine the total amount of radiation exposure in a specific volume of dry air under standard conditions of pressure and temperature (760 mm Hg or 1 atmosphere at sea level and 22° C)?

Quantity of ionization

What do optically stimulated luminescence dosimeters (OSLs), thermoluminescent dosimeters, film badge dosimeters, and pocket ionization chambers have in common?

These devices are all used for personnel monitoring

Which of the following is not true about field survey instruments?

They are all equally sensitive in the detection of ionizing radiation.

Who discovered x-rays on November 8, 1895?

Wilhelm Conrad Roentgen

Which of the following are types of ionizing radiation that produce virtually the same biologic effect for equal absorbed doses in body tissue?

X-rays, beta particles, and gamma rays