ESTRO course on Image Guided Radiotherapy in Clinical Practice 2018

Range Verification: PET

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

Courtesy of Martijn Engelsman