Dental X-Ray Principles

Flashcards summarizing key concepts from the dental x-ray principles lecture.

What is the role of kVp in X-Ray production?

kVp changes the strength of the X-Rays, affecting density and contrast.

How does mA affect X-Ray images?

mA increases the number of X-Rays made, affecting the density of the image.

What does exposure time determine in X-Ray imaging?

Exposure time determines the amount of time the film/sensor is exposed to X-Rays.

What is the effect of filtration on X-Rays?

Filtration increases the quality of the x-ray beam by removing low-energy, 'soft' X-rays.

How does collimation affect the X-Ray beam?

Collimation limits the size and shape of the beam but does not change the energy or number of X-rays.

What happens if kVp is increased with no change in mA or exposure time?

The X-Ray film would likely be overexposed.

What does a high-density image indicate?

A high-density image is likely darker and may indicate excessive exposure to X-Rays.

What is the importance of contrast in X-Ray images?

Contrast is crucial for differentiating structures, making it easier to detect conditions like caries.

What constitutes an acceptable density range in X-Ray film?

An acceptable density range is neither too dark nor too light; it is a matter of preference.

In the context of X-Rays, what does doubling mA while halving exposure time accomplish?

This maintains correct exposure, as the increase in quantity of X-Rays offsets the reduction in time.

What is mA?

Milliamperes, a unit measuring the current used in X-Ray generation, affecting image quality and exposure.

What is kVp?

Kilovolt peak, a measurement of the peak voltage applied across the X-Ray tube, influencing the quality and penetration of the X-Ray beam.

Cathode(-) and Anode(+) are controlled by what?

kVp

The higher the cathode and anode are the….____.

the faster the electrons will go through.

High contrast xrays are easier for seeing what?

Caries

Low contrast xrays are better for seeing what?

bone thinning (perios prefer)