CT Scan (Computed Tomography) uses X-rays to take many cross-sectional images of an object and combines those images with computer reconstruction to make a 3d model of it. A technology commonly used in medical field to get internal views of the body. This technology is adopted into engineering and design development as it gives insights that traditional methods cannot do. Making innovative technology needs different perspectives and these scanners can quite literally let innovators see around corners.
One big advantage, with using x-rays, is that it can see the internal volumes of parts. Used in inspections of finished metal to plastic parts it can check the fabrications process was done right. This would be a great way to check failing parts and can confirm where the failure is likely to happen. CT scanning brings incredible insight to designing parts.
Some of the largest companies in the world use CT scanners to gain understanding of their previous designs which allows them to make the best future products possible. Because it uses X-rays it can give dimensional checks in areas that traditional measuring methods cannot do. Because the powerful software gives users many tools to examine the scanned parts.
Being able to see the inside of your assemblies is so insightful. Having it fully put together can pinpoint where collisions, misalignment, or wrongs dimensions can be hidden if it were not assembled. Sometimes products are sealed watertight with adhesives or weldings rendering it impossible to take apart. CT scanning gives the ability to look inside without resorting to cutting it open with power tools. As seen in many time with shoe designing. This can also find cracking or warping in the shell casing such as when screws are overtightened. Since these scans are so quick and accurate, they can give valuable information to designers fast.