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2. X-ray tube - Wikipedia

   en.wikipedia.org/wiki/X-ray_tube

   X-ray tube. A modern dental X-ray tube. The heated cathode is on the left. Centre is the anode which is made from tungsten and embedded in the copper sleeve. William Coolidge explains medical imaging and X-rays. An X-ray tube is a vacuum tube that converts electrical input power into X-rays. [1] The availability of this controllable source of X ...

3. Transmission electron microscopy - Wikipedia

   en.wikipedia.org/wiki/Transmission_electron...

   Transmission electron microscopy ( TEM) is a microscopy technique in which a beam of electrons is transmitted through a specimen to form an image. The specimen is most often an ultrathin section less than 100 nm thick or a suspension on a grid. An image is formed from the interaction of the electrons with the sample as the beam is transmitted ...

4. Central vacuum cleaner - Wikipedia

   en.wikipedia.org/wiki/Central_vacuum_cleaner

   Central vacuum cleaner. Central vacuum installed with an air inlet. Antique central vacuum inlet located in a dining room at Château Dufresne ( Canadian Register of Historic Places, c. 1918) Typical central vacuum cleaner power unit for residential use (North America) A central vacuum cleaner (also known as built-in or ducted) is a type of ...

5. What is a Tympanic Membrane Retraction? - WebMD

   www.webmd.com/a-to-z-guides/what-is-a-tympanic...

   A tympanic membrane retraction, or retracted eardrum, is a condition where the tympanic membrane, or eardrum, gets pulled toward the middle of your ear. The tympanic membrane is a thin layer of ...

6. Disc Desiccation: Symptoms, Causes, and Treatment - Healthline

   www.healthline.com/health/disc-desiccation

   Takeaway. Disc dessication is the dehydration of discs between your vertebrae. Symptoms may include stiffness, weakness, and pinched nerves. Treatment options include medications, injections, and ...

7. Electron beam computed tomography - Wikipedia

   en.wikipedia.org/wiki/Electron_beam_computed...

   Electron beam computed tomography (EBCT) is a specific form of computed tomography (CT) in which the X-ray tube is not mechanically spun in order to rotate the source of X-ray photons. This different design was explicitly developed to better image heart structures that never stop moving, performing a complete cycle of movement with each ...