Higher kVp ________ x-ray transmission and ______ its overall absorption is an example of ______.

Higher kVp ______ percentage of Compton Interactions and Energy of ________ exiting the patient.

Increasing the Volume of Irradiated Tissue results in ______.

Volume of Irradiated Tissue Depends on ______ and _____ (Choose 2)

Examinations using ________ kVp results in Greater proportion of _____ Energy Scattered X-Rays.

Lower kVp results in _____ proportion of Higher-Energy Scatter Radiation

Larger X-Ray Beam Field Size results in ______ amount of Radiation

Main purpose of Beam Restrictors (Choose 2)

Any time the x-ray field stays within the anatomy of interest, the pt receives unnecessary dose.

What limits the x-ray beam's field size?

Increasing Collimation ________ Field Size.

Increasing Collimation results in _________ (Choose 2)

Decreasing Collimation results in _________ (Choose 2)

Radiographer should be aware of the anatomy of interest and limit the x-ray field size only to anatomy of interest.

Beam Restriction Devices _____ the amount of radiation, _____ amount of Scatter Radiation and increases ______.

Collimating and decreasing Beam Field Size ______

Increasing collimation results in _____

Increasing Collimation results in _____

Decreasing Collimation results in _____

It is recommended that significant Collimation requires the mAs the be increased by 20-50%

Simplest form of Beam Restricting Device

Flat piece of Lead that contains a hole.

In Aperture Diaphragm, due to the Aperture's far distance to the Radiation Source, a Large Area of Unsharpness surrounds the Radiographic Image.

Which Beam Restricting Device is different in shape as Aperture but similar attributes?

Cones and cylinders are directly below the Window.

Cones and Cylinders limit unsharpess less than Aperture Diaphragm.

Cones and cylinders are interchangeable among Tube Housings

Cylinders are preferred more than Cones.

Device consisting of very thing lead strips with Radiolucent Interspaces intended to absorb Scatter Radiation emitted from the pt.

Grids improve Radiographic Contrast.

Grids requires _____ mAs and results in higher _____

Grids are used for Anatomic parts that are _____ inches

Grids are used for more than _____ kVp

Scatter Radiation comes from the _____

Significant amount of Scatter Radiation is directed toward _____, resulting in unwanted exposure to the Image.

Scatter Radiation decreases ______

Grids try to absorb all the Scattered Photons direct toward the pt.

Grids try to absorb all Scattered Photons directed toward the ___.

Grids allow all transmitted photons emitted from the pt to pass to the IR

Scatter Radiation adds __________ to the _____ and decreases _______.

Radiopaque Interspace Material separates the Lead Lines.

Expresses the number of lead lines per unit length

Typical Range in Value for Grid Frequency

Typical Grid Frequency

Defined as the ratio of height of the lead strips to the distance between them.

High Ratio Grids _____ more Scatter Radiation and increases _______.

____ Ratio Grids _____ less Scatter Radiation and _____ Radiographic Contrast

What would Decrease the amount of lead content?

Decreasing Grid Ratio for the same Grid Frequency Decreases _______ and ________(Choose 2)

Most popular Grid pattern.

Grid Pattern that allows angulation of x-ray tube along the length of the lead lines.

Grid where lead lines run at right angles to one another.

Contains more lead strips and removes more scattered Photons.

Cross Grids can be angled slightly

____ refers to the orientation of the lead lines relative to one another.

Type of Grid used in Fluoroscopy and Mobile Imaging.

Lead lines that are angled to approximately match the angle of divergence of the Primary Beam

Non-Focused Grids allow more transmitted photons to reach the IR.

_______ is when Imaginary Lines were drawn from each of the Lead Lines in a Linearly Focused Grid and would meet & form an Imaginary Point.

If the points were connected along the length of the Grid and form an Imaginary Line

In a Focused Grid, how is the Focal Distance determined? (Choose 2)

_____ length between the Grid and the Convergent Line & Point

_____ a recommended range of SID that can be used with a Focused Grid

Focal Range for 40 inch SID

Focal Range for 72 inch SID