Lecture 4 Radiographic Anatomy part 2 Flashcards
(61 cards)
How are x-rays produced?
Produced in a standard way, by accelerating electrons with a high voltage and allowing them to collide with a metal target.
when are x-rays released?
Released when electrons are suddenly decelerated upon collision with the metal target;
Suddenly decelerated electrons upon collision with metal target are commonly called?
Brehmsstrahlung or “braking radiation
Characteristic x-rays?
When electrons drop from higher states to fill the vacancy, emitting x-ray photons with precise energies determined by the electron energy levels.
Fuzzy edge of object in image is mostly produced by?
Scattered X-rays
If source/object distance increases
Penumbra will decrease
If object/receptor distance increases
Penumbra increases
Size of focal spot increases
Penumbra will increase
What is the labelled structure?
Genial tubercle / mental spine
Name the labelled structure
Genial tubercle / mental spine
Name the obscure middle structure
Genial tubercle
Name the labelled structure
Lingual foramen
- anastomosis of the sublingual branches of the right and left lingual arteries
Name the hole structure
Lingual foramen
Name the hole structure
Lingual foramen
Name this arrowed structure
Mental ridges - more commonly seen when using bisecting angle technique
Mental ridges are more commonly seen using?
Bisecting angle technique
Name the obscure two lines below the teeth
Mental ridges
Name the arrowed structure
Mental fossa - depression on alveolar process
Name this arrowed structure
Mental foramen - anterior limit of the mandibular canal
Name this arrowed structure
Mental foramen
Name the arrowed structure
Mandibular canal - contains the inferior alveolar nerve
Mandibular canal contains?
Inferior alveolar nerve
Name this black arrowed structure
Mandibular canal
Name this arrowed structure
Mandibular canal - superimposition makes PDL look wider
