Biol129_L5 - 1 Imaging Techniques The Problem • All...

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Unformatted text preview: 1 Imaging Techniques The Problem • All imaging techniques are based on attempts to “see” inside the body non- invasively • The specialized nature of the body and organ systems make this difficult 2 Early Techniques • Some of the earliest techniques may not be viewed as “imaging” per se, but does give the physician a mental image of the body. • Palpation – Simple touching with pressure – Varying the pressure gives indication of depth – Organs can be isolated and checked Early Techniques - 2 • Percussing – Technique of listening to sound reflection of percussive tapping – Can be used to determine fluid retention, relative organ size • Both techniques are still practiced – Why? 3 Physics to the rescue • The discovery of the “X- ray” by Roentgen in the late 1800’s opened the door to a half decade of fun. • The X-ray is a high-energy photon (way beyond the UV range)....
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This note was uploaded on 03/31/2008 for the course BIOL 129 taught by Professor Sachshowardgeor during the Spring '08 term at Penn State.

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Biol129_L5 - 1 Imaging Techniques The Problem • All...

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