Is it true that transmission electron microscopes form a 3-D image of the surface of a specimen?

Transmission electron microscopes do not form a 3-D image of the surface of a specimen. They are used to visualize internal structures of specimens with a high magnification. If a 3-D image is desired, techniques like tomography can be used with a series of 2-D images taken at different angles to reconstruct a 3-D image.