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Week 1 Radiology
Chapters- 1, 11, 6, 16, 25
66
Other
Not Applicable
09/23/2012

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Term
Radiation
Definition
Energy Carried by waves or streams of particles
Term
X-radiation
Definition
high energy radiation produced by the collision of a beam of electrons with a metal target in an x-ray tube
Term
X-ray
Definition
a beam of energy that has the energy to penetrate substances and record image shadows on a photographic film
Term
Radiology
Definition
the science or study of radiation used in medicine
Term
radiograph
Definition
a photographic image produced on film or a digital sensor by the passage of x-ray through an object
*incorrect term-xray(refers to beam of energy*
Term
radiograph
Definition
a photographic image produced on film or a digital sensor by the passage of x-ray through an object
*incorrect term-xray(refers to beam of energy*
Term
Radiography
Definition
The art and science of making radiographs by the exposure of film to x-rays.
Term
Dental radiography
Definition
The production of radiographs of the teeth and adjacent structures by the exposure of film to x-rays.
Term
What is the importance of dental radiographs?
Definition
They allow the dental professional to identify conditions that may otherwise go undetected and to see conditions that cannot be seen clinically
Term
Who is considered "father of the x-ray"?
Definition
Wilhelm Roentgen
Term
When were x-rays discovered, by who, and how?
Definition
Nov 8th 1895, Roentgen, he discovered then by playing with vacuum tubes and flouscent screens by accident
Term
Who made the first dental radiograph and when?
Definition
Otto Walkhoff 1895
Term
Who exposed the first dental radiograph on a live person here in the united states and when?
Definition
C. Edmund Kells - 1896
Term
What is the importance of dental radiographs?(3)
Definition
1.A necessary component of comprehensive care
2.Essential for diagnostic purposes
3.Enable dental professional to identify problems that may otherwise go undectected
Term
What are the uses of dental radiographs?(3)
Definition
1.Detect diseases, lesions, and conditions of the teeth and bones that cannot be identified clinically
2.Confirming suspected diseases
3.Localizing foreign objects and lesions
Term
What is the primary benefit of dental radiographs?
Definition
Detection of diseases
Term
What are some things that can be found on dental radiographs? (9)
Definition
missing teeth
extra teeth
impacted teeth
dental carries
periodontal disease
tooth abnormalities
retained roots
cycts
tumors
Term
Who is the dental radiographer?
Definition
Any person who positions, exposes, and processes dental x-rays
Term
Dental radiographer knowledge and skill requirements
Definition
1.must know radiation history
2.Working knowledge of radiation physics, characteristics, biology, and protection
3.Familiar with dental x-ray equipment, film, image characteristics, processing, and quality assurance
4.patient management basics
5.technique concepts and technical skills
Term
Duties and responsibilities of dental radiographer(7)
Definition
1.Positioning and exposure of dental x-rays
2.processing of dental x-ray films
3.mounting and identification of dental radiographs
4.education of patients
5.maitenence of darkroom facilities and processing equipment
6.implementation and monitoring of quality control procedures
7.ordering of film and supplies
Term
When were federal standards put into place for the manufacture of dental x-ray machines?
Definition
1974
Term
What does the federal government regulate when it comes to dental x-ray machines VS state & local governments?
Definition
Federal government regulates manufacture and instillation while state and local governments regulate how they are used and how often the equipment is inspected
Term
Two types of x-ray machines?
Definition
1.intraoral film
2.extraoral film
Term
Tubehead
Definition
Heavy metal housing that holds the x-ray tube
Term
Position Indicating device(PID)
Definition
Open-ended lead cylinder that extends from tubehead, aims and shpaes x-ray beam
Term
Extension Arm
Definition
Suspends and allows for positioning of the tubehead, has the control panel, on/off switch, etc.
Term
Film Holder
Definition
A device used to hold and allign intraoral dental x-rays in the mouth
Term
Beam Allignment Device
Definition
An instrument used to help the dental radiographer position the PID relative to the tooth and film
Term
Other types of film holders(3)
Definition
1.Disposable Styrofoam bite block http://www.google.com/imgres?num=10&hl=en&biw=1173&bih=648&tbm=isch&tbnid=u0hP1xo3Pw3QpM:&imgrefurl=http://www.smartpractice.com/Apps/WebObjects/SmartPractice.woa/wa/style%3Fid%3DPWSP310332%26cid%3D439%26m%3DSPD&docid=8R8EKVH8_5paUM&imgurl=http://www.smartpractice.com/Images/Products/Supplies/PhotoLg/310332.jpg&w=500&h=455&ei=QHZfUIWbCsry2gX7x4GYDA&zoom=1&iact=hc&vpx=128&vpy=151&dur=269&hovh=141&hovw=155&tx=165&ty=134&sig=105213996734088478797&page=1&tbnh=141&tbnw=155&start=0&ndsp=18&ved=1t:429,r:0,s:0,i:74

2.EEZEE-Grip (Snap-A-Ray)http://www.google.com/imgres?hl=en&biw=1173&bih=648&tbm=isch&tbnid=HxeCNbeaJuENWM:&imgrefurl=http://www.rinncorp.com/Catalog_sensor_eezeegrip.aspx&docid=T2OS5kTQDdOVhM&imgurl=http://www.rinncorp.com/images/Catalog/catalog_sensor_eezeegrip.jpg&w=560&h=220&ei=hXZfUJrmIK6A2QW4yoDoDQ&zoom=1&iact=hc&vpx=83&vpy=188&dur=379&hovh=138&hovw=350&tx=165&ty=97&sig=105213996734088478797&page=1&tbnh=74&tbnw=188&start=0&ndsp=18&ved=1t:429,r:0,s:0,i:71

3.Unibite http://www.google.com/imgres?hl=en&biw=1173&bih=630&tbm=isch&tbnid=2DxCZnN7YnKKUM:&imgrefurl=http://www.rinncorp.com/Catalog_filmhold_unibite.aspx&docid=XrUKKj-FjcHn2M&imgurl=http://www.rinncorp.com/images/Catalog/catalog_filmhold_unibite_01.jpg&w=202&h=124&ei=tnZfUOqmGcG-2gWdy4HICg&zoom=1&iact=hc&vpx=171&vpy=205&dur=118&hovh=99&hovw=161&tx=99&ty=29&sig=105213996734088478797&page=1&tbnh=99&tbnw=161&start=0&ndsp=18&ved=1t:429,r:0,s:0,i:71
Term
Intraoral Film
Definition
Film that is placed inside the mouth and is used to examine the teeth and supporting structures
Term
Types of Intraoral Radiographic Examinations(3)
Definition
1.Periapical examination
2.Interproximal examination
3.Occlusal examination
Term
What is the purpose of an periapical examination and what type of film is used?
Definition
Used to examine entire tooth and supporting bone, periapical film is used
Term
What are the techniques for periapical examinations?
Definition
paralleling and bisecting
Term
What is the purpose and film type used for interporximal examinations?
Definition
To examine the crowns of both the maxillary and mandibular canines on one set of film, bite wing film
Term
What is the technique used for interproximal examinations?
Definition
bite wing technique
Term
What is the purpose and film type used for occlusal examinations?
Definition
Used to examine large areas of the maxilla or mandible on one film, occlusal film used
Term
What is the technique used for an occlusal examination?
Definition
Occlusal technique
Term
What does an FMX(full mouth radiographic series) show?
Definition
All tooth bearing area of the maxilla and mandible
Term
What are Dentulous areas?
Definition
Areas that Have teeth
Term
What are Endentulous areas?
Definition
Areas with no teeth
Term
Diagnostic Criteria for Intraoral Radiographs(2)
Definition
1. Must show images with optimum density (overall darkness), contrast (shades of gray), definition, and detail
2. Must show images with least amount of distortion possible
Term
What should be included in periapical radiographs?
Definition
entire crowns and roots of teeth being examined, 2mm beyons root apicies
Term
What muse bite wing radiographs have?
Definition
open contacts
Term
What is an Extraoral Radiographic Examination?
Definition
A radiographic inspection of large areas of the skull or jaws
Term
See table on page 54 for the prescribing of dental radiographs
Definition
Term
Prescribing of dental radiograph is based on?
Definition
Individual needs of patient, this could include..
1.Review of medical history
2.review of dental history
3.Cheif complaint for dental appointment
4.PA, BW, FMX, number, type, Panoramic
Term
Digital Radiography
Definition
film-less imagining system, computer file containing pictoral information
Term
Digitize
Definition
Convert imagine to digital form, then processed by computer
Term
Pixel
Definition
discrete unit of digital information
Term
Sensor
Definition
receptor for digital imagining
Term
Digital subtraction
Definition
recerses greyscale on radiographic image
Term
Radiolucent
Definition
portion of x-ray that is black
Term
Radiopaque
Definition
portion of radiograph that us white or light
Term
Charged Coupling Device(CCD)
Definition
*Direct digital imagining*
image receptor found in intraoral sensor, captures image and transmits it to the computer, software enhances and stores image
Term
Storage Phosphor Imaging(SPI)
Definition
*indirect digital imaging*
image recorded on phosphor-coated plate then scanned(converted to digital image), images are stored and viewed on computer
Term
Purpose of digital dental radiograph(7)
Definition
1.DIAGNOSE dental disease
2.DETECT lesions, disease, and conditions of the teeth and surrounding structures
3.CONFIRM or classify suspected disease
4.PROVIDE information during dental procedures
5.EVALUATE growth and development
6.ILLUSTRATE changes in disease status
7.DOCUMENT the condition of a patient at a specific point in time
Term
Digital Radiography
Definition
Method of capturing a radiographic image using a sensor, breaking it into electronic pieces, and presenting and storing the image using a computer
Term
How are digital exposure times with digital imagining compared to film?
Definition
Exposure times are reduced by 50-80% when using digital,
Term
Are digital sensors more or less sensitive to radiation than film?
Definition
MORE, this allows for shorter exposure time
Term
How do our CCD's at perimeter work?
Definition
1.contains a silicon chip with an electronic circuit in it
2.chip is sensitive to x-ray or light
3.x-ray photons come into contact with CCD and cause electrons to be released from silicon resulting in an electrical charge
3.a latent image is made on the receptor, it becomes digitized and viewed on the computer
Term
What does the computer do with the electronic symbol it recieves from the senor?
Definition
Converts the electronic signal fromt he sensor into a shade of grey that is viewed on the computer monitor
Term
How long does it take for an image to record on a computer monitor?
Definition
0.5-120 seconds
Term
What does the computer do with information recieved from the sensor?
Definition
digitizes, processes, and stores
Term
Can our sensors be steralized?
Definition
No they must be covered with a disposable barrier
Term
Advantages of digital radiography?(7)
Definition
1.reduced x-radiation exposure
2.superior greyscale resolution
3.increased speed of image viewing
4.no chemicals, processors, or film to purchase, no darkroom needed
5.increased efficiency
6.Enhancement of diagnostic image
7.Effective patient education tool
Term
Disadvantages of digital radiography(3)
Definition
1.Initial set up costs
2.Sensor size(CCD)
3.Infection control-not able to steralize sensor or cord
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