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Computed Tomography (CT) Imaging

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Questions and Answers

What is another name for computed tomography?

X-ray imaging

Radiography

Geometric tomography

Computerized axial tomography (correct)

How does computed tomography produce images of the body?

By creating 3D models

By using ultrasound waves

By detecting electrical impulses

By producing cross-sectional images (correct)

Why is radiography limited in distinguishing certain structures?

Because it superimposes all structures on the film (correct)

Due to its quantitative nature

Because of the use of ultrasound waves

Due to the inability to produce cross-sectional images

What is a major advantage of conventional tomography over radiography?

It overcomes the problem of superimposition Signup and view all the answers

In what way is radiography described as a qualitative process?

It is difficult to distinguish nonuniform thickness Signup and view all the answers

Why is computed tomography often preferred for imaging tumors and surrounding tissues?

Because it can produce cross-sectional images Signup and view all the answers

What is the immediate goal of tomography?

To eliminate all unwanted planes Signup and view all the answers

Why do radiography and tomography fail to adequately demonstrate slight differences in subject contrast?

Because of the film-screen combinations used Signup and view all the answers

What is a limitation of radiography and tomography with regards to image adjustment?

Contrast cannot be adjusted after being recorded on film Signup and view all the answers

Why do radiography and tomography have limitations in imaging very small tissue contrast differences?

Film sensitivity to slight tissue contrast variations Signup and view all the answers

How do digital imaging modalities like CT differ from radiography and tomography in adjusting image contrast?

CT scans can alter contrast post-image capture Signup and view all the answers

Apart from medicine, in which other field is CT commonly used according to the text?

Nondestructive materials testing Signup and view all the answers