Reconstruction - Video Lesson

This lesson is about an important part of CT image processing called reconstruction. The digital signal leaving the data acquisition system is considered raw data. It cannot be viewed by the technologists because this information is unprocessed data, sometimes called scan data. Reconstruction is the process through which this raw data becomes image data or processed data. Raw data is stored only in the CT control console but the image data is what's sent to packs for the radiologist's interpretation. So how does the reconstruction process actually work? There's actually three separate steps, all which contribute to reconstruction. The first step is interpolation, After that is convolution, and then finally filtered back projection. Each of these processes are mathematical manipulations