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Cranial CT scan HTML5


The  technique of Tomodensitometry  (TDM) is often referred to as a “scanner” because of confusion between the process itself and  the apparatus employed in that process. This imaging technique depends of the use of x-rays. It is particularly useful for observing the brain.
The x-ray beam is emitted by an x-ray tube and is then transformed by a detector into an electrical message that is sent to a computer.
The system emitter/detector is moved around the patient and computer analysis of received signals, from different angles, enables the creation of images in section.
Credits: département de neuro-radiologie - CHU Henri Mondor - France

Click and drag the cursor vertically alongside  the head. A CT section of that part of the brain appears to the right.

Learning goals

  • To illustrate the images in section that the scanner makes possible.
  • To recognize the different parts of the cranial cavity

Learn more

Many techniques are used to make images of the interior of the human body for medical purposes.  Some employ ultrasound waves (echography), others detect radiation from appropriately targeted…

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