Exercise

Plot images

Perhaps the most critical principle of image analysis is: look at your images!

Matplotlib's imshow() function gives you a simple way to do this. Knowing a few simple arguments will help:

cmap controls the color mappings for each value. The "gray" colormap is common, but many others are available.
vmin and vmax control the color contrast between values. Changing these can reduce the influence of extreme values.
plt.axis('off') removes axis and tick labels from the image.

For this exercise, plot the CT scan and investigate the effect of a few different parameters.

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Set the stage by importing packages and loading the CT scan. matplotlib.pyplot is often loaded as plt.