2 - Imaging

Question 1

Zygomatic Arch Lines

Answer 1

• McGrigor/Campbell Lines
  
  • Trapnell Line - Line 5
    ​
• Dolan Line
  
  • Elephant line

Question 2

Relative Radiation Dose

Answer 2

• Health effects
  
  • 10mSv - No direct evidence of health effects
  • 10- 1000mSv: No early effects. Increased evidence of certain types of cancers at higher doses
  • 1000 - 10 000mSv: Radiation sickness
  • 10 000mSv: Fatal
• Background radiation: 1-13 mSV
• Intra oral PA: 0.005mSv
• OPG: 0.01
• CXR: 0.02
• CBCT: 0.1 - 0.5
• CT facial bones 1.0
• CTB and Head 2.0
• CT Chest 5 - 8
• CT Abdo 10
• CTPA 15
• VQ Scan 2
• Bone Scintigraphy 5
• PET 20