In a CT system, X-ray photons emitted from an X-ray tube will travel through the object and hit a detector. The detector senses the dose at each pixel of the detector area. This creates digital images while the object is rotated. The reconstruction software calculates virtual slices based on the dose at each location from different angles. The result is called a tomogram. Each pixel in the tomogram represents a density of material, a voxel.

There is a range of terminology for CT system accuracy and uncertainty that should be understood when evaluating 3D scanning systems, this blog post illustrates some of those terms, such as Precision and Accuracy, Tolerance, Uncertainty of Measurement, Resolution, Error, and Suitability.

In this video Dirk Steiner compares two examples of scans at 550mm vs 1100mm detector distance using a micro-focus tube to illustrate how scan speed can be increased, and he shows the impact on image quality and dimensional deviation. 
 

You might be surprised to know cast metal products can be found in 90 percent of manufactured goods and equipment throughout the world. From critical components for aircraft and automobiles to home appliances and surgical equipment, cast metal products play an important role in today’s economy especially in the United States. The U.S. is the world’s largest supplier, shipping $18 billion worth of products annually (according to the Office of Industrial Technologies report, Metal Casting – Industry of the Future).

Now is your chance to view this webinar to learn how industrial computed tomography (CT) can be used for the inspection of composite materials.

In an exclusive webinar, Peter Kramm, YXLON Senior Product Manager, discusses the revolutionary computed tomography technology found in the YXLON FF20 CT and FF35 CT systems, with a detailed segment on helical scans.

Abigail Curtis, a postdoctoral fellow at the American Museum of Natural History in New York, demonstrates how computed tomography reveals unexpected scientific insights into bat physiology. X-ray with computed tomography is used to create digital reconstructions of modern and fossilized bat samples.

In a recent CT Science Days event, Dr. Edward Stanley, PhD of herpetology, of the California Academy of Sciences, discussed how researchers are using computed tomography to study reptiles and amphibians in ways that preserve specimens and facilitate collaboration.

Computed tomography (CT) goes light years beyond regular 2-D X-ray technology to deliver accurate three-dimensional images of scanned objects, including their voids and areas of differing density. Jason Robbins, YXLON Senior Product Manager, explains the science of CT in this (fun and nerdy!) educational video.

You are invited to attend a free CompositesWorld.com webinar to learn how computed tomography (CT) can be used for the inspection of fiber orientation.

Industrial CT is more than just scanning and image quality