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PET in-vivo
• On-line and off-line
• 5 min on-line to 30 min off-line
imaging time
• Measure activity, not dose
• Suffers from biological wash-out
and low counting statistics
• Clinically applied. 1–2 mm
accuracy in favorable locations
Prompt gamma imaging
• On-line
• Especially suitable for beam range
• Indirect measurement, not dose
• Immediate measurement
• Early stage of development
Range Verification: PET
Courtesy of Martijn Engelsman