X-rays
are probably the most familiar means of medical diagnosis. Discovered
by Roentgen in 1895, X-rays are a type of light with an extremely short
wavelength. They can penetrate most tissue, but are absorbed well by
bone and can be recorded on photographic film. By using an ingested
contrast medium, it is also possible to study blood vessels and the
digestive tract. The main drawback of X-rays is that they can cause
cell damage in high doses, so much work has been done to increase the
sensitivity of photographic and, lately, electronic detectors. X-rays
are also widely used in security examinations and testing metallic structures
for fatigue.
See more techniques:
Aerial Photography
Computed Tomography (CT Scans)
Endoscopy
High Speed Photography
Kirlian Photography
Light Microscopy (LM)
Magnetic Resonance Imaging (MRI)
Molecular Models
Radionuclide Scanning (Gamma Scanning)
Satellite Images
Scanning Electron Microscopy (SEM)
Scanning Tunnelling Microscopy (STM)
Schlieren Photography
Space Photography (NASA)
Thermography
Transmission Electron Microscopy (TEM)
Ultrasound Images
Ultraviolet Photography
X-Rays
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