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Radiology

Chapter One

TermDefinition
Cone Older term used to describe the positioning indicating device (PID) or beam indicating device (BID).
Digital Imaging A method of producing a filmless radiographic image using a sensor (instead of film) and trandsmitting the electronic information directly into a computer, which serves to acquire, process, store, retrieve, and display the radiographic image.
Panoramic Radiography Procedure performed with a special purpose x-ray machine that uses a stationary patient and a simultaneously moving x-ray source and image receptor to produce an image of the entire dentition and surrounding structures.
PID (Position Indicating Device) Also called beam indicating device (BID). An open-ended, cylindrical or rectangular device attached to the tube head at the aperture to direct the useful beam of radiation. PID's are available in different lengths.
Radiograph An image produced on photosensitive film by ecposure to x-rays. Developing the film produces a negative image that can be viewed and interpreted.
Radiology That branch of medical science that deals with the use of radiant energy in the diagnosis and treatment of disease.
Roentgen Ray See X-Ray
Sensor For use in digital imaging. An electron or specifically coated plate that is sensitive to x-rays. Placed intraorally to capture a radiographic image when exposed to x-rays.
Tomography A radiographic technique used to show detailed images of structures located within a predetermined plane of tissue while eliminating or blurring those structures in the planes not selected.
X-ray (Roentgen Ray) Radiant energy of short wavelength that has the power to penetrate substances and to record shadow images on photographic film, phosphor plates, and digital sensors.
State when x-rays were discovered and by whom. Wilhelm Conrad Roentgen on November 8, 1895
List Five uses of dental radiographs. 1. To detect, confirm, and classify oral disease and lesions. 2. To detect and evaluate trauma. 3. To evaluate growth and deveolpment. 4. To detect mission and supernumerary (extra) teeth.
List the 6 electromagnetic characteristics. 1. Travel at speed of light. 2. Have no electrical charge. 3. Have no mass or weight. 4. Pass through space as particles and in a wavelike motion. 5. Give off an electrical feild. 6. Have energies that are measurable and different.
List 3 characteristics of Long Wavelengths. 1. Low Frequency. 2. Low energy. 3. Less penetrating x-ray.
List 3 characteristics of Short Wavelengths. 1. High frequency. 2. High energy. 3. More penetrating x-ray.
List the nine examples of electromagnetic radiation. 1. Cosmic rays 2. Ultraviolet rays 3. Gamma Rays 4. Visible Light. 5. Infrared 6. Television 7. Radar 8. Microwave 9. Radio Waves
What are the properties of X-rays? 1. Are visible 2. travel in straight lines & speed of light 4. Have no mass or weight 5. Have no charge 6. Interact with matter causing ionization 7. can penetrate opaque tissues and structures 8. Can affect photographic film & biological tissue
Created by: daisenmurray