Multi-slice dose issues: paediatric protocols

• More effort in defining paediatric CT protocols

  • for same mAs, dose to newborn is up to 2.5 that of adult
  • image quality has to be considered

• Siemens system modifies the tube current for paediatrics

  • based upon
    • patient weight for head exams
    • patient age for bodies

• GE uses ‘rainbow system’ for colour coding different age groups

  • acquisition parameters set for each colour
  • rainbow system extends to drug doses etc