1.
0.02: 500 mA x ? =10 mAs
2.
1/4: When doubling the distance (, the intensity will decrease by a factor of?
3.
4 times: When decreasing the distance by half , the intensity will increase by...
4.
10: 100 mA x 0.1 s =
5.
300: ? x 0.033 s =10 mAs
6.
Beam Limitation: Includes aperture diaphragm, cones, cylinders and variable aperture collimators.
7.
Beam Limitation: Reduce exposure to body parts not under examination.Reduces secondary/scatter which decreases density.
8.
Beam Modification: Anything that changes the nature of the x-ray beam.
9.
changing filtration and beam limitation: how is Primary beam modified?
10.
Direct Square Law (Density Maintenance Formula): Used when changes in distance (SID) occur and requires a change in mAs to maintain optical density
11.
exposure: kvp is Maximum or peak kilovoltage during a...
12.
filter out low-energy x-rays which reduce patient skin dose: Primary purpose of filtration?
13.
Half-Value Layer (HVL): That thickness of material that will reduce the intensity of radiation to one-half its original value
14.
Half-Value Layer (HVL): Usually expressed in terms of mm/Al equivalency.Used to express beam quality.
15.
halve density: Decreasing kVp by 15% will
16.
halve the mAs: If the kVp is increased by 15%, you must---
17.
heterogeneous beam: Varying energies and wavelengths
18.
Inverse Square Law: Used to calculate intensity, density, dose and dose rate.
19.
kvp: Radiographic Contrast,X-Ray Beam Energy, Penetrating Ability of the Beam are the Primary Controls of?
20.
one-fourth: If the distance is doubled, the intensity decreases to
21.
Primary Beam Modification: when the beam is modified before it enters the patient.
22.
the electrical supply of the x-ray
generator: Most photons are below peak value, covering a range from 0 -peak value, depending on?
