Which of the following removes the low-energy, long wavelength energy from the beam?

Which is the location where thermionic emission occurs?

The mathematical formula used to construct a digital image is called:

Detective Quantum Efficiency (DQE) is the measure of x-ray absorption efficiency?

Typical range of EXI numbers are?

What problem can the over-use of edge-enhancement features cause in a digital image:

Biological effects of radiation are grouped into two major classes. These classes are ________________ and__________________.

One roentgen is equal to:

What is remnant radiation?

When electrons strike the target what percentage of x-rays is produced?

List the two types of digital imaging

What does Window level (WL) controls?

What is image noise?

What is distortion?

What is a grid?

Which of the following artifacts is related to the Nyquist frequency?

During the reading process, the intensity of light emitted by the CR plate phosphor is directly proportional to:

When a photostimulable phosphor plate is stimulated by a laser beam, the color of light emitted from a barium fluorohalide crystal is:

The sampling frequency of a CR reader, which determines the number of measurements taken across the phosphor plate, is called the:

Whenever magnification is increased:

The formula to determine the SOD (source to object distance) is:

The controlling factor for exposure when using a digital image receptor is:

Reducing the amount of scatter radiation reaching the IR results in:

Higher kVp results in less absorption and more variation in the intensities of photons exiting the patient.

Increasing the kVp by 15% has the same effect on exposure as

Which of the following is the correct formula for the inverse square law?

Focal spot size affects only:

The relationship between kVp and the quantity of remnant radiation is known as the:

When OID cannot be reduced, it is possible to reduce size distortion by:

mAs and kVp both affect the exposure and contrast of a digital image.

What type of relationship do mAs have with the quantity of x-rays produced?

To maintain the same amount of radiation reaching the IR, if the kVp is increased by 15% the mAs needs to:

The indication of how much magnification is seen on a radiograph is:

__ SID and __ OID results in increased magnification.

If the magnification factor is 1.25, the image is __ than the object.

Increasing the kVp:

Shape distortion is due to misalignment of the tube and/or part.

Which of the following is the formula to determine magnification factor?

Using a higher SID

Which of the following matrices results in a digital image with the best image quality?

Distortion is misrepresentation of the size or shape of the anatomy being imaged.

The ability of the imaging system to distinguish between two structures is

The degree of difference between adjacent densities or brightness levels is called

The positive electrode of the x-ray tube is termed the

As kVp is increased, more radiation energy is produced, resulting in more scattered radiation, which increases density to the film.

Beam filtration does not influence density and contrast.

What is the correct formula for determining heat unit (HU) capacity?

Which of the following is a phenomenon related to the structure of the x-ray tube’s target (anode) angle?

Which of the following is categorized as a geometric property?

What are density and contrast categorized as?

​Changes in size or shape of the anatomic part

What are the layers of a CR Imaging Plate?

What is the scintillation phosphor typically used in the indirect conversion of FPD?

The phosphor most likely used in PSP radiography is:

What are the two types of FPD Radiography?

What is the photoconductor material typically used in the direct capture FPD radiography?

The mathematical formula used to construct a digital image is called:

an image with bit depth of 12 has ___ shades of gray?

Contrast resolution is limited by Signal to Noise Ratio?

Charged -coupled device (CCD) is classfied as a FPD?

Amorphous Selenium x-ray detector provide ______________?

In computer terminology, a single binary digit is referred to as a:

When compared to conventional screen-film radiography, digital radiography exhibits:

Which of the following would result in a displayed digital image which is brighter:

For digital imaging, each frame displayed consists of a discrete number of rows and columns of picture elements called the:

Of the following, which best represents an analog device in radiology:

In generic digital imaging terms, changing the contrast level of the image is called:

A radiation safety badge is also known as a:

Which of the following is considered a short-term effect of radiation exposure?

Which of the following types of tissues would be the least radiosensitive?

The SI unit for the rad is the:

The production of free radicals is primarily the result of the interaction of radiation with:

Which of the following would possess the highest L.E.T.?

The x-ray interaction that results in all the photon energy being transferred to tissue is:

For an atom of tungsten, which would possess the greatest amount of binding energy

The __ uses aluminum oxide to record radiation dose.

Which of the following types of cells undergo meiosis?

NCRP recommends the SSD must not be less than __ inches for stationary fluoroscopy

The quality of an x-ray beam can be expressed as:

The scintillator layer in a flat panel detector contains:

Which of the following bit depths would produce the most gray tones?

Increasing the SID with compensation of mAs to maintain the exposure to the IR will increase

The anode heel effect is most evident when using a:

The minimum lead equivalent requirement for gonadal shielding is

An increase in image magnification will result from increasing:

What characteristic x-rays are useful for image production?

The ability of a system to record detail, expressed in lines per mm

Charge created in the amorphous silicon layer is collected at the

____ is the software function that enhances contrast along the boundaries of a structure

The portion of the rotating anode x-ray tube that doesn't move

What type of dosimeter is likely to give inaccurate readings if it isn't read each day?

Contrast resolution increases from an increase in

Which is true about SID

Which transformers work on self induction?

The air-gap technique uses a ___ SID and a ___ OID

As the patient size increases it produces an increase in receptor exposure.

As the filtration increases the contrast becomes a:

As tissue density decreases, the amount of scatter increases.

As the patient size increases it produces a decrease in:

Which of the following digital image receptors requires the most exposure and most exposure to the pt?

Which of the following digital imaging systems requires the least amount of exposure to produce the digital image?

What is the cumulatie effective dose limit for a 28 year old radiographer?

Which of the following occurs when changing from a 9" mode to a 6" mode in a multi-field image intensifier?

As tissue density decreases, the amount of scatter decreases.

Increasing the ___________ will increase the shades of gray.

Increasing the window width will _________ the spatial resolution.

A destructive pathological condition will cause an increase in ________.

A increase in receptor exposure will be seen with pleural effusion.

X-rays of higher maximum energy can be obtained by doing which of the following?

A major advantage of digital imaging is that it allows one to preprocess and postprocess the image, to accenuate image detail.

What type of relationship exist between matrix size and spatial resolution?

What is the unit of binding energy?