A CT scanner is a large, tunnel-like machine with a hole in the center. During a chest CT scan, you lie on a table as it moves small distances at a time through the hole.
An x-ray beam rotates around your body as you move through the hole. A computer takes data from the x rays and creates a series of pictures, called slices, of the inside of your chest.
Different types of chest CT scans have different diagnostic uses.
High-resolution CT (HRCT) scans provide more than one slice in a single rotation of the x-ray tube. Each slice is very thin and provides a lot of details about the organs and other structures in your chest.
For this scan, the table moves continuously through the tunnel-like hole as the x-ray tube rotates around you. This allows the x-ray beam to follow a spiral path.
The machine's computer can process the many slices into a very detailed, three-dimensional (3D) picture of the lungs and other structures in the chest.
Clinical trials are research studies that explore whether a medical strategy, treatment, or device is safe and effective for humans. To find clinical trials that are currently underway for Chest CT Scan, visit www.clinicaltrials.gov.
November 20, 2013
Gary H. Gibbons
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