Both Computerized Axial Tomography (CAT) and Magnetic Resonance Imaging (MRI) are non-invasive techniques (nothing needs to be introduced into the patient's body) that allow us to see our insides from the outside. 
CT uses X-rays and magnetic waves, and in both cases computers are used to interpret the information obtained and create a visible image that healthcare personnel can interpret to diagnose different diseases. They are also very useful techniques for anatomical studies, not only of human beings, but also of other living beings, and even of objects without damaging them, in other fields of knowledge such as archeology. 
Ruzena Bajcsy is a Czech computer scientist (naturalized U.S. citizen) who has developed the techniques necessary for the computer creation of these images and is especially important in the study of the parts of the brain. She participated in the elaboration of a very complete atlas of this organ, which opened the door to other advances thanks to the knowledge generated. 
The images obtained by these two techniques are very similar, although those obtained by MRI are of higher resolution than those obtained by CT, depending on the use to be made of them, one or the other technique is chosen.

Questions: 
 
Observe and analyze the image of the brain obtained by MRI and answer the questions:

Imagen encéfalo MIR     Dibujo encéfalo

Analyze the MRI image with the diagram and what you have learned in class, trying to identify and compare its parts. To do this you can be guided by questions 2-4: 
2. We see four images of a skull, identify which one is taken in profile, which one from the top, which one from the back and which one from the bottom of the skull.  
3. Identify in the a-izq image the cerebrum, cerebellum and brainstem. 
4. Say which structures we observe in light color at the end of the image b-right. 
5. What is the relationship between computer science, the field in which Ruzena Bajcsy is a doctor, and this diagnostic technique? 
6. When we have an MRI scan we cannot wear earrings, piercings, or other metallic accessories. Why do you think this is?