Radiation Dose for CTC

Radiation Dose: A perspective

• Average annual natural background dose: 3mSV

How We Reduce CTC dose

• Do not perform CTC if patient is likely to require colonoscopy
• IE. IBD, polyposis syndromes
• Use effective mAs≤ 50
  •         Supine: effective mAs 50
  •         Prone: effective mAs 25
• Limit rescans
• Use iterative reconstruction