Chapter 1 Introduction Flashcards
The making of radiographs by exposing an imagine receptor either film or digital sensor.
Radiography
Images or pictures produced by xrays
Dental radiographs
Invented the xray in nov 8 1895
professor William Conrad Roentgen
why did he call it the x ray
because the x represents the unknown
How did id Otto walkhoff first prototype take to expose
25 mins
promoted the use of radiography in dentistry in 1896
C edmund kells
first exxposed a prototype that took 25 mins in 1895
Oto Walkhoff
introduced the hot cathode tube to reduce raditation in 1913
willian david colliadge
introduced the bitewings and wrote the first text book in 1913 and 2924
howard riley raper
Dangers of early x ray machines
presents an electrical hazard due to open uninsulated high voltage supply wires
what did william cooliage introduce
shookproof dental xray machine
what does PID do
Position indicating device restricts the size of the xray beam
CT
a modality that stands for computed tomography had has 600 times higher radiation exposter then panos
What is CBVI and CBCT
it is the gold stand that offers less radiation as the radiation scatters as it hits the cone material while passing through the PID.
stands for
cone bean computed tomography or cone beam volumetric imaging
Early x ray film was packaged
In black paper and rubber
emulsion coating
now both sides are coated with shorter exposure times compared to one side being coated
machine wrapped xray film
first avalible in 1919 by kodak
how is digital different from film
Digital replaces film with a sensor as the imaging receptor and offer may convinent advantages
Frances Mouyen
first introduced digital imaging in 1987 called radiovisography
Advantages of digital
Less radiation
no chemicals
no film disposal
Bisecting technique
made in 1907 by A Cieszynski and it applied the rule of isometryto dental radiology
List the uses of dental radiographs
-Detect, confirm, and classify oral diseases and
lesions
– Detect and evaluate trauma
– Evaluate growth and development
– Detect missing and supernumerary (extra) teeth
– Document the oral condition of a patient
– Educate patients about their oral health
