Final answer:
The most closely associated term with image reconstruction immediately following a scan is Filtered Backprojection, a technique essential for producing clear CT images.
Step-by-step explanation:
The term most closely associated with image reconstruction immediately following a scan is A. Filtered Backprojection. This technique is used in computed tomography (CT) and other imaging modalities to reconstruct an image from projection data acquired at different angles. Filtered backprojection applies a mathematical filter to correct for the blurring that occurs during the projection process and then projects the filtered data back onto an image plane to reconstruct the final image. This process is essential to produce clear and accurate images that are useful for diagnosis and analysis.