The raw data gathered by detectors is converted into visual slices through mathematical processes:
The technology has evolved through several "generations" to improve speed and quality:
: A scale used to quantify tissue density, where water is 0 HU and air is -1,000 HU. 3. Technological Evolutions
: The scanner measures how much an X-ray beam is attenuated (weakened) as it passes through different tissues. Beer-Lambert Law : This physical law (
: A common algorithm used to solve for attenuation coefficients in each anatomical slice.
) governs the intensity variation of the beam based on the material's linear attenuation coefficient (
: The geometric principle used to reconstruct a 2D object from its measured projections.