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Annual Review of Cancer Biology

Volume 7, 2023

Reinventing Radiobiology in the Light of FLASH Radiotherapy

Abstract

Ultrahigh–dose rate FLASH radiotherapy (FLASH-RT) is a potentially paradigm-shifting treatment modality that holds the promise of expanding the therapeutic index for nearly any cancer. At the heart of this exciting technology comes the capability to ameliorate major normal tissue complications without compromising the efficacy of tumor killing. This combination of benefits has now been termed the FLASH effect and relies on an in vivo validation to rigorously demonstrate the absence of normal tissue toxicity. The FLASH effect occurs when the overall irradiation time is extremely short (<500 ms), and in this review we attempt to understand how FLASH-RT can kill tumors but spare normal tissues—likely the single most pressing question confronting the field today.

Keyword(s): conventional radiotherapy, FLASH radiotherapy, isoefficient tumor killing, normal tissue sparing, ultrahigh dose rate
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/content/journals/10.1146/annurev-cancerbio-061421-022217
2023-04-11
2024-04-25
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/content/journals/10.1146/annurev-cancerbio-061421-022217
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Reinventing Radiobiology in the Light of FLASH Radiotherapy
Annual Review of Cancer Biology 7, 1 (2023); https://doi.org/10.1146/annurev-cancerbio-061421-022217
/content/journals/10.1146/annurev-cancerbio-061421-022217
/content/journals/10.1146/annurev-cancerbio-061421-022217
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