fluoroscopy

1 gram rad = ??? ergs

1 gray = ??? rad

1 rad = ??? erg/gram

1 sievert = ??? rem

A television image typically consists of ??????????????? lines of dots

Advanced output window designs minimizes the consequences of light scatter, which is reffered to as:

An AP abdominal film could deliver a skin entrance exposure ranging from:
a. 100-500 mradsb. 1-2 radsc. 5-10 radsd. 5-15 rads

An undesirable characteristic of most vidicon tubes is:

Approximately what pecent of the population are fluoroscoped each year?

Arrange the following image intensification viewing systems in terms of resolution. highest to lowest
optical mirrorreal-time videovideo tape16 mm cine film35 mm cine filmcassette spot film105 mm roll spot film70 mm roll spot filmdigital

Arrange the following recording systems in terms of quality:
spot filmphotospot/digitalcinevideotape/disc

Brightness gain degradation can be measured by a periodic check of an image intensifier's:

Cine film is available in what 2 sizes?

During fluoro, tube current can range between:
a. 0.5 mA - 5 mAb. 1 mA - 2 mAc. 1 mA - 3 mAd. over 100 mA

Each scan of the entire target of the vidicon tube is called a:

Electrons inside the II are speeded up by the:

Fluoroscopic magnification is made possible by varying the voltage to the:

For fluoroscopic examinations, the primary protective barrier is considered to be the:

How does the focal spot size of fluoroscopic X-ray tubes differ from the focal spot size of radiographic X-ray tubes?

How will increasing the brightness level of the TV monitor effect image quality?

If the increase in intensity achieved by most modern image intensifiers is approximately 169, the size of the output phosphor is most likely:

In magnification mode, FOV is:
increased or decreased?

Kell factor refers to:
a. II systemb. CCU systemc. AEC/ABS systemd. TV system

Manufacturers report up to a ???????? percent dose reduction when utilizing video disc recording during fluoro.

Maximum differential absorption of the tissues must occur, in order to produce a high-quality fluoroscopy by selecting proper:
a. mAb. timec. distanced. kVp

Newer TV systems utilize ???????????? scan lines for the TV camera and TV monitor

Protective curtains must be at least ??????? equivalent.

Resolution is measured in:

retrograde light flow in the II activates the:

Scatter radiation at ????????? from the patient could be as high as 500 mrads per hour.
a. 1 footb. 2 feetc. 3 feetd. 6 feet

scattered radiation is produced primarily by what x-ray interaction?

Shape distortion is caused primarily by:

The ability of the II tube to increase illumination level of the image is called its:

The ability to resolve the image dots on each scan line defines:

The brightness gain due to the increase in light photons due to the efficiency of the output screen to convert electrons to light photons is referred to as:

The bucky slot cover must be covered with at least ?????????? lead equivalent.

The component in the II that chnages the magnificaiton mode by changing the FOV is the:

The component of contrast which is chiefly deteremined by the energy of the x-ray beam is referred to as:

The component of contrast which is determined by the characteristics of equipment, such as the image intensifier and the effects of different equipment settings is referred to as:

The component that speeds up the electrons, maintains a very high potential difference of about:

The diameter of the circular image from the optical system is larger than the shortest dimension of the film in this type of framing.
a. overframingb. total overframingc. underframingd. exact framing

The effect of edge distortion seen primarily around the periphery of the image due to geometric problems in the shape of the image intensificaiton tube is referred to as:

The effective ripple for a three-phase, 12-pulse machine is:

The electrical image on the target of the vidicon tube is scanned ?????????? times per second.

The greatest limiting factor concerning resolution of fluoroscopic systems it the:

The increase in image brightness due to the acceleration of the electrons that will eventually strike the output phosphor is referred to as:

The increase in the effective brightness due to the size reduction of the output image size is referred to as:

The intensity of the output phosphor is measured in:

The Kell factor is a component of ????????? resolution.

The mA range utilized during fluoro is usually between:
a. 0.5 mA - 5 mAb. 1 mA - 2 mAc. 1 mA - 3 mAd. 50 mA - 100 mA

The maximum kVp that is utilized during fluoroscopy is approximately:
a. 100 kVpb. 110 kVpc. 125 kVpd. 150 kVp

The MTF of a system is:

The output phosphor is ????????????? times brighter that the input phosphor.

The output phosphor of the II optically interfaces with the:

The output screen is brighter at its ???????????, and its resolution is better at its ????????????

The overall resolution of the imaging system is expressed in terms of its: