000285678 001__ 285678 000285678 005__ 20240229155115.0 000285678 0247_ $$2doi$$a10.1088/1361-6560/ad0901 000285678 0247_ $$2pmid$$apmid:37918021 000285678 0247_ $$2ISSN$$a0031-9155 000285678 0247_ $$2ISSN$$a1361-6560 000285678 037__ $$aDKFZ-2023-02500 000285678 041__ $$aEnglish 000285678 082__ $$a530 000285678 1001_ $$00000-0001-5719-7105$$aAbouzahr, F.$$b0 000285678 245__ $$aThe first probe of a FLASH proton beam by PET. 000285678 260__ $$aBristol$$bIOP Publ.$$c2023 000285678 3367_ $$2DRIVER$$aarticle 000285678 3367_ $$2DataCite$$aOutput Types/Journal article 000285678 3367_ $$0PUB:(DE-HGF)16$$2PUB:(DE-HGF)$$aJournal Article$$bjournal$$mjournal$$s1701268215_7709 000285678 3367_ $$2BibTeX$$aARTICLE 000285678 3367_ $$2ORCID$$aJOURNAL_ARTICLE 000285678 3367_ $$00$$2EndNote$$aJournal Article 000285678 520__ $$aThe recently observed FLASH effect related to high doses delivered with high rates has the potential to revolutionize radiation cancer therapy if promising results are confirmed and an underlying mechanism understood. Comprehensive measurements are essential to elucidate the phenomenon. We report the first-ever demonstration of measurements of successive in-spill and post-spill emissions of gammas arising from irradiations by a FLASH proton beam. A small positron emission tomography (PET) system was exposed in an ocular beam of the Proton Therapy Center at MD Anderson Cancer Center to view phantoms irradiated by 3.5 × 1010protons with a kinetic energy of 75.8 MeV delivered in 101.5 ms-long spills yielding a dose rate of 164 Gy s-1. Most in-spill events were due to prompt gammas. Reconstructed post-spill tomographic events, recorded for up to 20 min, yielded quantitative imaging and dosimetric information. These findings open a new and novel modality for imaging and monitoring of FLASH proton therapy exploiting in-spill prompt gamma imaging followed by post-spill PET imaging. 000285678 536__ $$0G:(DE-HGF)POF4-315$$a315 - Bildgebung und Radioonkologie (POF4-315)$$cPOF4-315$$fPOF IV$$x0 000285678 588__ $$aDataset connected to CrossRef, PubMed, , Journals: inrepo02.dkfz.de 000285678 650_7 $$2Other$$aFLASH 000285678 650_7 $$2Other$$aPET 000285678 650_7 $$2Other$$aPET dosimetry 000285678 650_7 $$2Other$$aPET imaging 000285678 650_7 $$2Other$$aProton therapy 000285678 650_7 $$2Other$$aprompt gammas 000285678 650_7 $$2NLM Chemicals$$aProtons 000285678 650_2 $$2MeSH$$aProtons 000285678 650_2 $$2MeSH$$aProton Therapy: methods 000285678 650_2 $$2MeSH$$aPositron-Emission Tomography 000285678 650_2 $$2MeSH$$aRadiometry 000285678 650_2 $$2MeSH$$aPhantoms, Imaging 000285678 7001_ $$00000-0001-6644-0023$$aCesar, J. P.$$b1 000285678 7001_ $$00000-0002-0891-032X$$aCrespo, P.$$b2 000285678 7001_ $$00009-0002-2147-0848$$aGajda, M.$$b3 000285678 7001_ $$aHu, Z.$$b4 000285678 7001_ $$aKlein, K.$$b5 000285678 7001_ $$00009-0005-6205-9512$$aKuo, A. S.$$b6 000285678 7001_ $$aMajewski, S.$$b7 000285678 7001_ $$00000-0003-4446-5670$$aMawlawi, O.$$b8 000285678 7001_ $$aMorozov, A.$$b9 000285678 7001_ $$00009-0004-8148-3012$$aOjha, A.$$b10 000285678 7001_ $$aPoenisch, F.$$b11 000285678 7001_ $$00000-0002-0303-5159$$aProga, M.$$b12 000285678 7001_ $$00000-0003-1497-4327$$aSahoo, N.$$b13 000285678 7001_ $$0P:(DE-He78)102624aca75cfe987c05343d5fdcf2fe$$aSeco, Joao$$b14$$udkfz 000285678 7001_ $$aTakaoka, T.$$b15 000285678 7001_ $$00000-0002-6792-9522$$aTavernier, S.$$b16 000285678 7001_ $$00000-0001-6555-4977$$aTitt, U.$$b17 000285678 7001_ $$aWang, X.$$b18 000285678 7001_ $$aZhu, X. 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