Padlet 4 by Ashley Noel

Describe the relationship between CT numbers and linear attenuation coefficient.

uniqueashley14 — 2024-05-02 19:52:27 UTC

CT numbers give us a way to measure how dense something is to X-rays, and the linear attenuation coefficient tells us how much those X-rays get weakened as they pass through. CT numbers help us understand the density and the linear attenuation coefficient helps us understand how much X-rays get absorbed or weakened.

Define window width (WW) and window level (WL)

uniqueashley14 — 2024-05-02 19:58:55 UTC

Window width (WW) controls how much detail you can see. When widened, there are more details and if narrowed, you'll see fewer details. Window level (WL) controls the brightness and contrast of the image. If you increase the window level, the brightness increases, and the dark areas get brighter. If you decrease it, the overall brightness decreases, and the bright areas get darker.

Explain the relationship between pixel size, the field of view (FOV) and matrix size

uniqueashley14 — 2024-05-02 20:05:38 UTC

Pixel size affects the clarity of the details in the image.

Field of view (FOV) determines how much of the scene you can see in one shot.

Matrix size affects the resolution by determining how many pixels fit into the image.

Together, they all play a role in how sharp and detailed the final image turns out to be.