CT scan

Patient in CT scanner (pictured), 1989

A computed tomography (CT) scanner is an X-ray machine that takes cross section images. They can help a doctor in diagnosis.

CT Scan Media

• 1977 Dutch newsreel about CT scan

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  CT scan of the thorax. The axial slice (right) is the image that corresponds to segment 2/33 on the radiograph. (left).

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  CT Perfusion scan of the brain

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  PET/CT image. The color maps show varying metabolic activity in the combined CT image.

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  Computed tomography of human brain, from base of the skull to top. Taken with intravenous contrast medium. Template:Noprint

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  HRCT images of a normal thorax in axial, coronal and sagittal planes, respectively. Template:Noprint

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  Bronchial wall thickness (T) and diameter of the bronchus (D)

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  Example of a CTPA, demonstrating a saddle embolus (dark horizontal line) occluding the pulmonary arteries (bright white triangle)

• CT scan of a normal abdomen and pelvis, in sagittal plane, coronal and axial planes, respectively. Template:Noprint

• Types of presentations of CT scans: − Average intensity projection− Maximum intensity projection− Thin slice (median plane)− Volume rendering by high and low threshold for radiodensity

• Low-dose CT scan of the thorax

• Standard-dose CT scan of the thorax

Related pages

• Magnetic resonance imaging
• Ultrasonography (and in pregnancy)