Production yields of 𝛽+ emitters for range verification in proton therapy
| Autor: | J. Lerendegui-Marco, L. M. Fraile, Carlos Guerrero, Peter Dendooven, J. M. Quesada, M. A. Millán-Callado, T. Rodríguez-González, Ángel Parrado, I. Ozoemelam, M. C. Jiménez-Ramos |
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| Přispěvatelé: | Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear |
| Rok vydání: | 2020 |
| Předmět: |
Physics
Range (particle radiation) Proton QC1-999 Detector Context (language use) 030218 nuclear medicine & medical imaging Nuclear physics 03 medical and health sciences 0302 clinical medicine 030220 oncology & carcinogenesis Beta (plasma physics) Física nuclear Irradiation Proton therapy Beam (structure) |
| Zdroj: | E-Prints Complutense. Archivo Institucional de la UCM instname E-Prints Complutense: Archivo Institucional de la UCM Universidad Complutense de Madrid idUS: Depósito de Investigación de la Universidad de Sevilla Universidad de Sevilla (US) EPJ Web of Conferences, Vol 239, p 24003 (2020) idUS. Depósito de Investigación de la Universidad de Sevilla |
| ISSN: | 2100-014X |
| DOI: | 10.1051/epjconf/202023924003 |
| Popis: | In-vivo Positron Emission Tomography (PET) range verification relies on the comparison of the measured and estimated activity distributions from β+ emitters induced by the proton beam on the most abundant elements in the human body, right after (looking at the long-lived β+ emitters 11C, 13N and 15O) or during (looking at the short-lived β+ emitters 29P, 12N, 38mK and 10C) the irradiation. The accuracy of the estimated activity distributions is basically that of the underlying cross section data. In this context, the aim of this work is to improve the knowledge of the production yields of β+ emitters of interest in proton therapy. In order to measure the long-lived β+ isotopes, a new method has been developed combining the multi-foil technique with the measurement of the induced activity with a clinical PET scanner. This technique has been tested successfully below 18 MeV at CNA (Spain) and will be used at a clinical beam to obtain data up to 230 MeV. However, such method does not allow measuring the production short-lived isotopes (lower half-life). For this, the proposed method combines a series of targets sandwiched between aluminum foils (acting as both degraders and converters) placed between two LaBr3 detectors that will measure the pairs of 511 keV γ-rays. The first tests will take place at the AGOR facility at KVI-CART, in Groningen. |
| Databáze: | OpenAIRE |
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