Topic explanation · Public Library

Read the topic explanation, then try Quiz or Practice to check understanding.

Classroom-style explanation with key points, examples, and study tools for each topic.

How Ct Scanning Works

Physics · Class 12

Computed tomography (CT) uses X-ray measurements from many directions and computer reconstruction to produce cross-sectional images of the body.

I = I₀e⁽−μx)
many projections → reconstruction → cross-sectional image
Formula / Key Relation: In a CT scanner: 1. An X-ray source rotates around the patient. 2. Detectors measure transmitted X-
CT reconstructs cross-sectional images from many X-ray projections.
Computed tomography (CT) uses X-ray measurements from many directions and computer reconstruction to produce cross-s

Free-body idea — How Ct Scanning Works — original sketch for this lesson (not copied from a textbook).