A large source size can be compensated for by

The tube current in milliamperes multiplied by the time in seconds equals:

M1 x T1 = M2 x T2 and C2 x T2 = C2 x T2 are equations for the:

What is the one choice below that does not affect developer strength?

The minimum source-to-film distance required to reduce penumbra to satisfactory limits can be determined by using the equation D =

Covering the walls, floors, or any other object with lead, which may receive any of the primary radiation, is a method of controlling scatter. It is called:

Any material on the film side of the specimen that receives primary radiation may cause scatter called:

Inherent unsharpness is caused by free electrons that are generated by the radiographic ray as it passes through:

The formula for the inverse square law is:

The radiation effects which can be passed on to the offspring or to a later generation of a person receiving radiation are called:

Besides serving as a filter, screens of high atomic numbers, such as lead and lead antimony, also:

The range of thickness over which densities are obtained that are satisfactory for interpretation is a measure of the;

X-ray films with large grain size:

As the effective energy of the radiation increases up to about 250 kV:

Two serious obstacles to high-intensify fluoroscopy are:

In general, the quality of fluoroscopic equipment is best determined:

The load that can be handled by an X-ray tube focal spot is governed by:

In certain cases, it may advantageous to pack lead shot around a specimen. The purpose for doing this is to:

The absorption of radiation by a material varies:

In the microradiographic technique:

Which of the following X-ray generators would produce the narrowest cone of X-radiation?

Which of the following factors will not materially influence the image density of a radiograph?

Because of geometrical factors such as source size, source-to-specimen distance, and specimen-to-film distance, there can be a lack of perfect sharpness at the edges of indications. The unsharpness caused by geometrical factors may be referred to as the:

Two factors which greatly affect the suitability of the target material in an X-ray tube are:

Films that are left between lead screens too long in a high-temperature and high-humidity atmosphere may:

The quantitative measure of film blackening is referred to as:

A curve that relates density with the logarithm of exposure or of relative exposure is called:

A special radiographic method requiring two radiographs taken during separate exposures from two different positions to give the visual impression of a three-dimensional display when viewed in an optical device simultaneously is called:

The depth of a discontinuity can be estimated by making two exposures on a single film from two different positions of the X-ray tube. The depth of the discontinuity is computed from the shift in the shadow of the discontinuity with respect to the images of fixed markers on the front and back of the specimen. The method is called:

The activity of the fixer diminishes after being used for a period of time because the:

Increasing the X-ray or gamma ray energy will:

In million-volt radiography, filtration at the tube:

Film selection for an X-ray exposure depends on:

. Because of geometrical factors such as source size, source-to-specimen distance, and specimen-to-film distance, there can be a lack of perfect sharpness at the edges of indications. The unsharpness caused by these factors may be called the:

The main purpose of the X-ray generator controls on the equipment is to:

When X-rays, gamma rays, light, or electrons strike the photographic emulsion, a change takes place in the silver halide crystals. This change is called:

The ability of a material to block or partially block the passage of X-rays and gamma rays is called:

Source size, specimen thickness, and source-to-specimen distance are the three factors that determine the:

The absorption of gamma rays from a given source when passing through matter depends on the:

The fact that gases, when bombarded by radiation, ionize and become electrical conductors make them useful in: