Radiation that exits the x-ray tube from the anode is called:

The photon-tissue interaction in diagnostic radiography that results in the total absorption of an x-ray photon and the production of contrast in the radiographic image is:

Which photon-tissue interaction produces a recoil electron and a scattered photon in diagnostic radiography?

The traditional unit of in-air exposure is the:

The SI unit of absorbed dose is the:

The traditional unit of dose equivalency is the:

The SI unit of equivalent dose and effective dose is the:

The traditional unit of activity is the:

________ refers to 100 ergs of energy deposited per 1 g of tissue.

The amount of radiation deposited per unit length of tissue traversed by incoming photons is called:

Rads multiplied by a radiation weighting factor equals:

Compton interaction:

The radiation weighting factor for x-rays is:

Mutations are examples of:

Effective dose limit:

What agency publishes radiation protection recommendations?

Radiation safety standards assume what relationship between dose and response?

Which of the following would be applicable to radiation therapy?

Which of the following causes about 5% of the cellular response to radiation?

When radiation strikes the cytoplasm, which of the following occurs?

The equivalent dose limit for the embryo-fetus is:

The effective dose limit for radiographers is:

The cumulative occupational exposure for a 29-yearold radiographer is:

The annual effective dose limit for the general public, assuming infrequent exposure, is:

The upper boundary dose that can be absorbed that carries a negligible risk of somatic or genetic damage to the individual defines:

Filmbadges are generally accuratedownto the level of:

The exposure switch on a portable x-ray machine must be attached to a cord that is at least how many feet long?

Under what conditions can the radiographer be exposed to the primary beam?

For purposes of radiation protection, the x-ray beam is filtered. X-ray tubes operating above 70 kVp must have total filtration of:

Gonadal shielding should be used:

The secondary protective barrier must overlap the primary protective barrier by at least:

The x-ray control booth is considered a:

The exposure switch must keep the radiographer behind the:

Areas for the general public such as waiting rooms and stairways are considered:

An uncontrolled area must be kept under what dose annually?

Areas occupied by persons trained in radiation safety and wearing personnel monitoring devices are called:

Which of the following takes into account the volume and types of examinations performed in the room?

How is workload factor measured?

The amount of time the beam is on and directed at a particular barrier is called:

Leakage radiation from a diagnostic x-ray tube may not exceed:

Organelles are located in the:

Relative biologic effectiveness (RBE) describes the:

The law of Bergonie´ and Tribondeau states:

Which of the following describes the radiosensitivity of lymphocytes?

When are embryologic effects least likely to occur?

Devices in the x-ray circuit that increase or decrease voltage are called:

The filament circuit makes use of what type of transformer?

Because the x-ray tube requires DC to operate properly, what device is required in the x-ray circuit?

Where is the rectifier located in the x-ray circuit?

Thermionic emission occurs at the:

At the time of exposure, the charge on the focusing cup is:

An interaction that produces heat at the anode and also produces x-rays is called:

Examples of video tubes that may be used in fluoroscopy are:

When a quality control test for exposure linearity is performed, adjacent mA stations must be within ________ of one another.

When a quality control test for exposure reproducibility is performed, successive exposures must be within ________ of one another.

When a quality control test for collimator accuracy is performed, the result must be within ________.

When a quality control test for accuracy of kVp is performed, the result must be within ________ of the control panel setting.

When a spinning top test is performed on singlephase equipment, a radiograph exhibiting six dots would indicate:

When a spinning top test is performed on three-phase equipment, a timer setting of 0.5 second should indicate the following on the resultant radiograph:

The accuracy of collimation at a 72-inch SID must be:

The accuracy of kVp at 90 kVp must be:

The feature of the image intensifier that ensures the radiation dose striking the input phosphor is constant is the:

Instead of Vidicon or Plumbicon tubes, what device may be used in the television system?

The electronic device that may be used for many quality control tests on x-ray equipment is the:

The amount of darkness on a radiograph is best described as:

The smallest particle of a compound that retains the characteristics of the compound is a(n):

The equation mAs = mAs describes which of the following?

Given an original technique of 20 mAs and 80 kVp, which of the following would produce a radiograph with double the density?

Distance and density are governed by what law or rule?

Unwanted markings on a radiograph are called:

Manual manipulation of the digital image after acquisition is referred to as:

As speed class decreases, patient dose:

Because the digital system software ultimately controls contrast, kVp may be:

Image acquisition, image display, and image storage are the primary components of what system?

What “language” is used by PACS?

Which exposure factor causes excessive image noise if set too high?

Which of the following can be documented as an indication of patient dose?

Choosing the anatomical region on a touch screen display to set technique is called:

What is used to reduce both patient dose and the production of scatter radiation?

Image artifacts are usually classified as:

Grid ratio is expressed as:

The primary type of grid used in diagnostic imaging is:

Which of the following does not belong in the definition of matter?

The accuracy of collimation at a 60-inch SID must be:

Which of the following is true regarding frequency and wavelength of electromagnetic radiation?

Beam restrictors reduce the amount of scatter produced by reducing which of the following?

What effect does increasing filtration have on contrast?

Decreased SID causes image:

Grid ratio is expressed as :

The primary type of grid used in diagnostic imaging is :

The measure of a grid’s ability to enhance contrast is called:

Which of the following grid errors would result in an image that shows normal density in the middle but decreased density on the sides, assuming the correct side of the grid faces the x-ray tube?

Which of the following grid errors would result in an image that shows decreased density more to one side than the other?

Grid ratio is described by which of the following?

Grid radius is described as:

Structures seen outside of the collimated area on a radiograph, produced by “off-focus” (extrafocal) radiation, are the result of:

Geometric unsharpness within the radiographic image can be minimized by using the:
1. Smallest focal spot
2. Shortest object film distance
3. Longest target film distance

An undistorted radiographic image results when the object plane and the image plane are:

A radiographic grid should be used when:
1. The body area to be radiographed measures more than 10 cm
2. A field size larger than 10 to 12 inches is used
3. More than 60 kVp is required to penetrate a body part

Twice as many electrons strike the target in the x-ray tube when: