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@ARTICLE{Biltekin:284654,
author = {F. Biltekin and C. Bäumer$^*$ and J. Esser and O. Ghanem
and G. Ozyigit and B. Timmermann$^*$},
title = {{P}reclinical {D}osimetry for {S}mall {A}nimal {R}adiation
{R}esearch in {P}roton {T}herapy: {A} {F}easibility
{S}tudy.},
journal = {International journal of particle therapy},
volume = {10},
number = {1},
issn = {2331-5180},
address = {[Erscheinungsort nicht ermittelbar]},
publisher = {Particle Therapy Cooperative Group},
reportid = {DKFZ-2023-02055},
pages = {13 - 22},
year = {2023},
abstract = {To evaluate the feasibility of the three-dimensional (3D)
printed small animal phantoms in dosimetric verification of
proton therapy for small animal radiation research.Two
different phantoms were modeled using the
computed-tomography dataset of real rat and tumor-bearing
mouse, retrospectively. Rat phantoms were designed to
accommodate both EBT3 film and ionization chamber. A
subcutaneous tumor-bearing mouse phantom was only modified
to accommodate film dosimetry. All phantoms were printed
using polylactic-acid (PLA) filament. Optimal printing
parameters were set to create tissue-equivalent material.
Then, proton therapy plans for different anatomical targets,
including whole brain and total lung irradiation in the rat
phantom and the subcutaneous tumor model in the mouse
phantom, were created using the pencil-beam scanning
technique. Point dose and film dosimetry measurements were
performed using 3D-printed phantoms. In addition, all
phantoms were analyzed in terms of printing accuracy and
uniformity.Three-dimensionally printed phantoms had
excellent uniformity over the external body, and printing
accuracy was within 0.5 mm. According to our findings,
two-dimensional dosimetry with EBT3 showed acceptable levels
of γ passing rate for all measurements except for whole
brain irradiation (γ passing rate, $89.8\%).$ In terms of
point dose analysis, a good agreement $(<0.1\%)$ was found
between the measured and calculated point doses for all
anatomical targets.Three-dimensionally printed small animal
phantoms show great potential for dosimetric verifications
of clinical proton therapy for small animal radiation
research.},
keywords = {3D printer (Other) / preclinical dosimetry (Other) / proton
therapy (Other) / small animal phantom (Other)},
cin = {ED01},
ddc = {610},
cid = {I:(DE-He78)ED01-20160331},
pnm = {899 - ohne Topic (POF4-899)},
pid = {G:(DE-HGF)POF4-899},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:37823014},
pmc = {pmc:PMC10563666},
doi = {10.14338/IJPT-22-00035.1},
url = {https://inrepo02.dkfz.de/record/284654},
}