RHS Greenbook Chapter 3

What does wavelength determine?

The energy and penetrating power of radiation

Quality:

Describes the mean energy and penetrating ability of radiation

Voltage

A measurement of force that refers to the potential difference between two electrical charges (speed effected)

• ranges from 60-70 KV

Kvp

Contrast- Fast-Energy (penetrating power- Quality

mA

Density- much-Amount of radiation- Quantity

Inverse Square Law

The intensity of radiation is inversely proportional to the square of the distance from the source:

When you raise kVP?

Contrast lowers

When you lower kVP?

Contrast raises

When you raise mA?

Density raises

When mA lowers?

Density lowers

What percent of heat is given off when x-rays are created?

99%