CT Scan

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Introduction

In Computed Tomography, a source of X-rays is rotated around a plane of the body, being picked up by a series of detectors.

 

As a CT uses X rays, the greater the atomic number, the greater a molecule's ability to stop the CT. Bone is white, while air is black.

 

Uses

 

CT and the Brain

While imaging the brain, from white to black, other tissues include:

CT can be used to detect:

contrast material

risks

 

Computed tomography (CT) is very useful in respirology becuase it avoid shadows. It is created by measuring attenuation coefficients of a 1cm thick axial beam in many projections.

Important uses of CT include:

Spiral CT scans are useful in detecting acute PE.

 

 

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Risks

Contrast Nephro

 

 

2500 kids die yearly in North America from CT

amount from one scan equal to outskirts of Hiroshima

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Mechanism of Action

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Additional Resources

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