|Participants of the GHPA Technical Meeting on September 29, 2023|
Cancer is one of the leading causes of death in the world today and is a global health challenge. Cancer diagnosis and treatment have come a long way in recent years, with new technologies and treatments constantly being developed. Radiation therapy is a crucial component of cancer treatment and has been used for decades. Modern advances in photon radiotherapy technology, such as image-guided radiation therapy, intensity-modulated radiation therapy, and stereotactic body radiation therapy have made treatment more effective.
Proton beam therapy is a type of radiation therapy that uses proton particles to target cancer cells with higher accuracy and fewer side effects than traditional radiation therapy with photons. Proton beam therapy is often used to treat cancers located near sensitive organs or tissues, such as brain tumors, spinal cord tumors etc.
The presentation discusses some physical, technical and biological basic aspects of proton beam radiotherapy and makes a comparison of proton and photon radiotherapy. The main advantages of proton therapy over photon therapy are underlined, namely: the better possibility of dose escalation, which increases the probability of curing cancer; reduction of the dose to healthy tissues, which improves patients' life quality; reduction of the low dose region, which decreases the probability of secondary malignancies.