The document describes key concepts in radiographic imaging, including scatter radiation, source-to-image distance, and image manipulation parameters like window level and width. It outlines the history of x-ray imaging, including the first image receptor and factors affecting image quality. Additionally, it distinguishes between dots in traditional and digital imaging, emphasizing the importance of resolution and density.

1. Fundamentals of
Imaging
RAD 206
Image Production

5. Scatter Radiation:
radiation produced from x-ray photon interactions with matter in such a
way that the resulting photons have continued in a different direction.
Source-to-Image Distance (SID):
the distance between the source of the x-rays (usually the focal spot of the
x-ray tube) and the image receptor .
Umbra:
true edge of an object as imaged radiographically.
Window Level:
image manipulation parameter that changes image brightness on the
display monitor, usually through the use of a mouse or trackball .
Window Width:
image manipulation parameter that changes image contrast on the display
monitor, usually through the use of a mouse or trackball

6. What is radiographic
imaging
Terminology:
Radio
Graphic
Imaging
Radiologic Imaging
Radiologic Technology
Radiographic Technology
Radiologic Science Technology

7. What is radiographic
imaging
•How was the first encounter with x-ray
•Image receptor: what was the first image
receptor used
•Image formation: How did the first image
form ( types of interactions)
•Image quality: how was the image quality
•Image quality factors: what factors controlled
the image quality

8. first encounter with x-ray
first radiographic image was seen on barium platinocyanide covered screen.

9. Then he used a large photographic
film to document it

10. Then he used a large photographic
film to document it
100 years

11. Wisdom Knowledge
Interest + Observation + Imagination

12. Components of a conventional
image

13. Our eyes
sees dots,
&
our brain
sees an
Image

14. What do you see

15. The basic element of an
image is a dot
•Continues dots = a line
•Small dots = high resolution
•Large dots = Low resolution
•Scattered dots = low density, low blackness,
low opacity ( high lucency)
•Close dots = High density, Greater blackness,
High opacity ( low lucency)

17. Dots in
nature

18. Dots in
nature

20. Are dots
Beautiful

22. In digital imaging the basic
element of an image is a Pixel

23. Who drew this picture ?
What's wrong?

25. Add some your
imagination to your
observation

26. Different Local Variations ?

30. Kims game