LET measurements in proton and helium-ion beams of therapeutic energies using a silicon pixel detector towards a tool for quality assurance
Background As advanced treatment plans increasingly include optimizing both dose and linear energy transfer (LET), there is a growing demand for tools to measure LET in clinical settings. Although various detection systems have been investigated in this pursuit, the scarcity of detectors capable of...
Gespeichert in:
| Hauptverfasser: | , , , , , |
|---|---|
| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
Sep 2025
|
| In: |
Medical physics
Year: 2025, Jahrgang: 52, Heft: 9, Pages: 1-15 |
| ISSN: | 2473-4209 |
| DOI: | 10.1002/mp.18085 |
| Online-Zugang: | Verlag, kostenfrei, Volltext: https://doi.org/10.1002/mp.18085 Verlag, kostenfrei, Volltext: https://onlinelibrary.wiley.com/doi/abs/10.1002/mp.18085 
|
| Verfasserangaben: | Yasmin Hamad, Ferisya Kusuma Sari, Renato Félix-Bautista, Mária Martišíková, Andrea Mairani, Tim Gehrke |
MARC
| LEADER | 00000caa a2200000 c 4500 | ||
|---|---|---|---|
| 001 | 1941577075 | ||
| 003 | DE-627 | ||
| 005 | 20251120164538.0 | ||
| 007 | cr uuu---uuuuu | ||
| 008 | 251119s2025 xx |||||o 00| ||eng c | ||
| 024 | 7 | |a 10.1002/mp.18085 |2 doi | |
| 035 | |a (DE-627)1941577075 | ||
| 035 | |a (DE-599)KXP1941577075 | ||
| 040 | |a DE-627 |b ger |c DE-627 |e rda | ||
| 041 | |a eng | ||
| 084 | |a 33 |2 sdnb | ||
| 100 | 1 | |a Hamad, Yasmin |e VerfasserIn |0 (DE-588)1381983685 |0 (DE-627)1941577571 |4 aut | |
| 245 | 1 | 0 | |a LET measurements in proton and helium-ion beams of therapeutic energies using a silicon pixel detector towards a tool for quality assurance |c Yasmin Hamad, Ferisya Kusuma Sari, Renato Félix-Bautista, Mária Martišíková, Andrea Mairani, Tim Gehrke |
| 264 | 1 | |c Sep 2025 | |
| 300 | |a 15 | ||
| 336 | |a Text |b txt |2 rdacontent | ||
| 337 | |a Computermedien |b c |2 rdamedia | ||
| 338 | |a Online-Ressource |b cr |2 rdacarrier | ||
| 500 | |a Online veröffentlicht: 04 September 2025 | ||
| 500 | |a Gesehen am 19.11.2025 | ||
| 520 | |a Background As advanced treatment plans increasingly include optimizing both dose and linear energy transfer (LET), there is a growing demand for tools to measure LET in clinical settings. Although various detection systems have been investigated in this pursuit, the scarcity of detectors capable of providing per-ion data for a fast and streamlined verification of LET distributions remains an issue. Silicon pixel detector technology bridges this gap by enabling rapid tracking of single-ion energy deposition. Purpose This study proposes a methodology for assessing LET and relative biological effectiveness (RBE) in mixed radiation fields produced by clinical proton and helium ion beams, using a hybrid silicon pixel detector equipped with a Timepix3 chip. Methods The Timepix3 detector was placed behind PMMA slabs of different thicknesses and exposed to initially monoenergetic proton and helium-ion beams. The detector featured a 300 µm-thick silicon sensor operated in partial depletion. Silicon-based LET spectra were derived from single-ion deposited energy across the sensor and subsequently converted to water-equivalent spectra. Track- and dose-averaged LET (LETt and LETd) were calculated from these spectra. LET measurements were used as input to estimate the RBE via the modified microdosimetric kinetic model (mMKM) assuming an (α/β)γ value of 2 Gy. Measurements were compared with simulations performed using the FLUKA Monte Carlo code. Energy deposition spectra, LETt and LETd values were simulated at various depths in PMMA for the radiation fields used, by considering the contribution from the secondary particles generated in the ion interaction processes as well. Results Energy deposition spectra were validated against Monte Carlo simulations, showing good agreement in both spectral shapes and positions. However, a depth uncertainty of less than 1 mm and other potential differences between measurements and simulations led to deviations, particularly in the distal region of the Bragg curve. Relative differences of LETd between measurements and simulations were within 3% for protons and 10% for helium ions upstream of the Bragg curves. Notably, larger discrepancies were observed in the distal part of the Bragg curve, with maximum relative differences of 7% for protons and 17% for helium ions. Average differences between RBE predictions from measured and simulated LET spectra were within 1% and 6% for protons and helium, respectively. Nevertheless, for both particle types, most measurements agreed with simulations within 1σ experimental uncertainty across the measured depths, with deviations beyond 1σ generally remaining within 3σ. Conclusions This study demonstrates the performance of silicon pixel detectors with respect to LET measurements and RBE estimation in clinical proton and helium-ion beams. The streamlined and accessible outline of the proposed methodology supports easy implementation into clinical routines, promising a viable and sound quality assurance tool for particle therapy. | ||
| 650 | 4 | |a helium-beam radiotherapy | |
| 650 | 4 | |a linear energy transfer | |
| 650 | 4 | |a Monte Carlo simulations | |
| 650 | 4 | |a proton therapy | |
| 650 | 4 | |a relative biological effectiveness | |
| 650 | 4 | |a silicon pixel Timepix3 detector | |
| 700 | 1 | |a Sari, Ferisya Kusuma |e VerfasserIn |4 aut | |
| 700 | 1 | |a Félix-Bautista, Renato |d 1983- |e VerfasserIn |0 (DE-588)1196728623 |0 (DE-627)1678579408 |4 aut | |
| 700 | 1 | |a Martišíková, Mária |d 1979- |e VerfasserIn |0 (DE-588)1076839649 |0 (DE-627)835386767 |0 (DE-576)252899369 |4 aut | |
| 700 | 1 | |a Mairani, Andrea |e VerfasserIn |0 (DE-588)1116742179 |0 (DE-627)870669281 |0 (DE-576)478592493 |4 aut | |
| 700 | 1 | |a Gehrke, Tim |d 1986- |e VerfasserIn |0 (DE-588)1044696982 |0 (DE-627)772571627 |0 (DE-576)398073740 |4 aut | |
| 773 | 0 | 8 | |i Enthalten in |t Medical physics |d Hoboken, NJ : Wiley, 1974 |g 52(2025), 9, Artikel-ID e18085, Seite 1-15 |h Online-Ressource |w (DE-627)265784867 |w (DE-600)1466421-5 |w (DE-576)074891243 |x 2473-4209 |7 nnas |a LET measurements in proton and helium-ion beams of therapeutic energies using a silicon pixel detector towards a tool for quality assurance |
| 773 | 1 | 8 | |g volume:52 |g year:2025 |g number:9 |g elocationid:e18085 |g pages:1-15 |g extent:15 |a LET measurements in proton and helium-ion beams of therapeutic energies using a silicon pixel detector towards a tool for quality assurance |
| 856 | 4 | 0 | |u https://doi.org/10.1002/mp.18085 |x Verlag |x Resolving-System |z kostenfrei |3 Volltext |
| 856 | 4 | 0 | |u https://onlinelibrary.wiley.com/doi/abs/10.1002/mp.18085 |x Verlag |z kostenfrei |3 Volltext |
| 951 | |a AR | ||
| 992 | |a 20251119 | ||
| 993 | |a Article | ||
| 994 | |a 2025 | ||
| 998 | |g 1044696982 |a Gehrke, Tim |m 1044696982:Gehrke, Tim |d 910000 |d 911400 |e 910000PG1044696982 |e 911400PG1044696982 |k 0/910000/ |k 1/910000/911400/ |p 6 |y j | ||
| 998 | |g 1116742179 |a Mairani, Andrea |m 1116742179:Mairani, Andrea |d 50000 |e 50000PM1116742179 |k 0/50000/ |p 5 | ||
| 998 | |g 1076839649 |a Martišíková, Mária |m 1076839649:Martišíková, Mária |d 50000 |e 50000PM1076839649 |k 0/50000/ |p 4 | ||
| 999 | |a KXP-PPN1941577075 |e 4808562650 | ||
| BIB | |a Y | ||
| SER | |a journal | ||
| JSO | |a {"recId":"1941577075","language":["eng"],"id":{"eki":["1941577075"],"doi":["10.1002/mp.18085"]},"physDesc":[{"extent":"15 S."}],"type":{"bibl":"article-journal","media":"Online-Ressource"},"note":["Online veröffentlicht: 04 September 2025","Gesehen am 19.11.2025"],"title":[{"title_sort":"LET measurements in proton and helium-ion beams of therapeutic energies using a silicon pixel detector towards a tool for quality assurance","title":"LET measurements in proton and helium-ion beams of therapeutic energies using a silicon pixel detector towards a tool for quality assurance"}],"person":[{"display":"Hamad, Yasmin","family":"Hamad","roleDisplay":"VerfasserIn","given":"Yasmin","role":"aut"},{"given":"Ferisya Kusuma","role":"aut","display":"Sari, Ferisya Kusuma","family":"Sari","roleDisplay":"VerfasserIn"},{"display":"Félix-Bautista, Renato","family":"Félix-Bautista","roleDisplay":"VerfasserIn","role":"aut","given":"Renato"},{"role":"aut","given":"Mária","roleDisplay":"VerfasserIn","display":"Martišíková, Mária","family":"Martišíková"},{"display":"Mairani, Andrea","family":"Mairani","roleDisplay":"VerfasserIn","given":"Andrea","role":"aut"},{"role":"aut","given":"Tim","roleDisplay":"VerfasserIn","display":"Gehrke, Tim","family":"Gehrke"}],"origin":[{"dateIssuedDisp":"Sep 2025","dateIssuedKey":"2025"}],"name":{"displayForm":["Yasmin Hamad, Ferisya Kusuma Sari, Renato Félix-Bautista, Mária Martišíková, Andrea Mairani, Tim Gehrke"]},"relHost":[{"title":[{"title_sort":"Medical physics","title":"Medical physics"}],"note":["Gesehen am 01.08.2025"],"type":{"bibl":"periodical","media":"Online-Ressource"},"physDesc":[{"extent":"Online-Ressource"}],"id":{"zdb":["1466421-5"],"issn":["2473-4209","1522-8541"],"eki":["265784867"]},"language":["eng"],"titleAlt":[{"title":"Medical physics online"}],"recId":"265784867","part":{"text":"52(2025), 9, Artikel-ID e18085, Seite 1-15","issue":"9","extent":"15","year":"2025","pages":"1-15","volume":"52"},"name":{"displayForm":["American Association of Physicists in Medicine ; American Institute of Physics"]},"pubHistory":["1.1974 -"],"disp":"LET measurements in proton and helium-ion beams of therapeutic energies using a silicon pixel detector towards a tool for quality assuranceMedical physics","origin":[{"dateIssuedDisp":"1974-","publisher":"Wiley ; AAPM ; [Verlag nicht ermittelbar]","publisherPlace":"Hoboken, NJ ; College Park, Md. ; New York, NY","dateIssuedKey":"1974"}]}]} | ||
| SRT | |a HAMADYASMILETMEASURE2025 | ||