Difference Between a Chest X-Ray and CT Scan Video

Dr. Henschke shares the difference between a chest x-ray and low dose CT scan when screening for lung cancer.
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When screening for lung cancer, what is the difference between a chest x-ray and low dose Computed Tomography (CT) scan? Dr. Claudia Henschke: Okay, a chest X-ray is one view of your entire chest. A CT scan today gives your 800 fuse. So clearly you have 800 MHz compared to one. Clearly you could see much more in a CT scan. But also a chest X-ray you have all of the soft tissues, and the bones, and the lungs are all superimposed. And so, you can't find very small abnormalities. You can find a nodule that may is an inch, the size of a quarter or bigger. But with CT scans you can find things that are small as a grain of rice. So that capability of CT scanners continuing to improve dramatically every couple of years.

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