Introduction to Clinical Radiography

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Introduction to Clinical Radiography

• RADI R103
• SSII
• Unit I Terminology Equipment

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Introduction to Clinical Radiography

• Unit I
• Lecture 1 -- Terminology

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General Definitions

• RADIOLOGY
• STUDY OF RADIANT ENERGY
• RADI-O- RADIATION
• -LOG- STUDY OF
• -Y NOUN
• VARY THE MEANING BY CHANGING THE ENDING
• RADIOLOGIST -- ONE WHO
• RADIOLOGIC -- PERTAINING TO

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TECHNOLOGIST vs. TECHNICIAN

• TECHNOLOGY
• APPLIED SCIENCE
• TECHNOLOGIST
• ONE SKILLED IN APPLYING SCIENCE
• TECHNICIAN (DO NOT USE THIS TERM!!)
• ONE SKILLED IN A TASK

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RADIOGRAPH

• PERMANENT RECORD MADE USING RADIATION
• RADIO- RADIATION (usually x rays)
• GRAPH PERMANENT RECORD

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RADIOGRAPHY

• PROCESS OF MAKING a permanent record using
  radiation (X RAYS)
• -Y (NOUN)
• RADIOGRAPHER -- (person who)
• PERSON WHO MAKES a permanent record using
  radiation (X RAYS)
• RADIOGRAPHIC (adjective)
• PERTAINING TO a permanent record made using
  radiation (X RAYS)

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ROENTGENOLOGY
Wilhelm Conrad Roentgen

• STUDY OF X RAYS
• ROENTGEN -- DISCOVERER OF X RAYS
• OLDER TERM INFREQUENTLY USED

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X RAYS

• X Rays -- An energy section in the
  electromagnetic spectrum (EMS)
• x ray NOUN
• x-ray ADJECTIVE
• EMS - a continuous band of measurable energies
  that are transported as a combination of electric
  magnetic waves
• EMS is divided into sections based on the
  characteristics of the energy level

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EMS RADIATION

• RADIO WAVES
• MICROWAVES
• INFRARED
• VISIBLE LIGHT
• ULTRAVIOLET
• X RAYS
• GAMMA RAYS
• COSMIC RAYS

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Electromagnetic Radiation

• CHARACTERISTICS
• FREQUENCY / second (Hz)
• WAVELENGTH distance traveled (m)
• VELOCITY "speed of light (m/s)
• MORE.....
• SECTIONS IDENTIFIED BY
• energy level
• how the energy originated
• way energy interacts with matter

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Electromagnetic Spectrum

• frequency energy wavelength
• radio microwaves low low long
• infrared (heat)
• visible light
• (r-o-y-g-b-v)
• ultraviolet
• x gamma rays
• cosmic rays high high short

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X RAYS

• ENERGY high
• ORIGIN electron movement in atoms
• INTERACTION ionizes atoms in matter

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PRODUCTION OF X RAYS

• Requirements
• a source of fast moving electrons
• must be sudden stop of the electrons motion
• in stopping the electron motion, kinetic energy
  (KE) is converted to EMS energies
• Infrared (heat), light x-ray energies

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X-ray Production
target
electrons
anode

• electrons move at high speed (KE)
• collide with target on anode
• KE of electrons converted to x rays heat