Duplicate of Fluoro & Digital Imaging (3rd sem.)

What is the formula for minification gain?

What charge does electrostatic focusing lenses have?

Care Stream & Agfa Systems use exposure indicators that are _______ related.

The range of exposure values that will produce an acceptable range of densities is:

What is the formula for brightness gain?

A reducing agent in a film developer that produces the black (high) densities:

The testing to ensure AEC produces the same results for multi exposures checks for: (2 ANS)

___ theory describes what happens @ the molecular lvl in emulsion film when exposed to light

As the speed class of a DR system decreases, image noise will:

This describes the rate @ which a data sample is acquired from the IR:

On a histogram, the ___ axis is the incidence of pixels (Qlty) for each exposure.

The part of the image intensifier that absorbs light and emits electrons is the:

Name that picture!

This function of DR tells the system how to display pixel values:

A photodetector used in indirect, cassette-less imaging:

If the matrix size increases, pixel size will:

The output phosphor is made of:

The FSS of a dedicated mammo unit is ___ than a standard x-ray tube, measuring____. (2 ANS)

In fluoro, this function automatically adjusts exposure techniques during a dynamic procedure:

_____ is the standard format for digital medical imaging.

An expression of the potential "speed class" that is required to produce an optimal image is:

Name that missing part!

The input phosphor of an image intensifier does this:

Semiconductor capacitors made of metal oxide are components of the:

The primary purpose of AEC is to:

What are the two types of AEC detectors

An electronic vacuum tube that increases light intensity

Which portion of the PSP plate stores the latent radiographic image?

The photocathode is made of:

In DR, indirect capture imaging, the photodetector is generally a ____ ____ photodiode.

With AEC, what happens if you use a higher kVp technique? (multi ANS)

Entrance Type AEC is also known :s

A PSP is scanned & energy from trapped electrons are released by a process known as:

A reducing agent in a film developer that produces the gray (lower) densities:

Exit Type AEC is also known as:

How is the latent image on a PSP plate extracted?

The input phosphor is made of:

Using DR, you overexposed an image. What action should be taken to provide an optimal quality image?

If the number of silver halide crystals increase, speed will_____.

Fuji & Konica Systems use exposure indicators that are _______ related.

The range of histogram data that should be included in the image display describes:

Which magnification mode will cause the most exposure to the patient?

The thickness or width of a focal plane is called:

This is determined by the ratio of photons @ the output phosphor compared to those @ the input phosphor:

Which of the following will not be found on an indirect capture DR system?

In direct digital radiography, the photoconductor is made of:

The range of exposure intensities that an IR can respond to is:

Why is the backup timer feature important? (multi ANS)

Who developed the commercial fluoroscope?

If the matrix size increases, pixel size will:

If you lower mA, what happens to your exposure time?

Pick the correct detector: Pt -> IR -> detector -> electricity produced -> timer is tripped

What is the purpose of an AEC back-up timer?

In general radiography, most X-ray cassettes have how many intensifying screens?

In tomography, as exposure angle increases, section thickness _____.

What is the difference between a photomultiplier tube and a photodiode?

On a histogram, the ___ axis is the amount of exposure (Qty) to the IR.

The useful imaging area of a digital IR is the:

The PSP goes through a final "erasure stage" by the use of what?

A diode tube connected to the output phosphor of an II by fiberoptic bundles or lenses most commonly used today:

When using AEC, a destructive pathologic condition may cause ________ exposure to the IR

Where should the image intensifier be located?

Orthochromatic film is sensitive to what color?

AEC controls only the qty of radiation and has no effect on contrast.

The AEC backup timer should terminate exposure no more than: (2 ANSWERS)

The capability of a screen to produce visible light is called:

Other wise known as a "burst of light", this generates light photons in response to X-rays:

If a matrix size is decreased, spatial resolution will ______.

When using AEC, a prosthetic part may cause ________ exposure to the IR.

The testing to show AEC terminates exp. regardless of outside factors checks for: (2 ANS)

Pick the correct detector: air is ionized, electric charge created, timer tripped

Made of lightweight plastic, this houses a PSP plate.

The thickness of a plane is determined by:

The AEC device most used in radiography today is the:

This describes how digital detectors sample x-ray exposure:

As pixel size decreases, spatial resolution will:

The number of gray levels possible in an image defines:

Approx. what % of removed electrons are trapped in the PSP's conduction band?

The human eye can detect how many shades of gray at a particular level?

The part of the image intensifier that absorbs electrons and allows them to be converted to the digital image is the:

___ are attracted to the sensitivity specks in silver halide crystal after exposure to light

AEC backup time should be set @ _____ of the expected exposure time.

What device absorbs X-rays and creates an electrical signal?

The minimum exposure time allowed by an AEC device defines:

A semiconductor that turns light to an electric charge & it stores the charge in a capacitor

Name that picture!

As the speed class of a DR system decreases, patient dose will:

What are the typical diameters of the input & output phosphors?

The ability of an intensifying screen to absorb incident photons is:

Which of the following will not be found on a direct capture digital device?

Name the missing part!

Which of these fluoro safety features will terminate exposure immediately?