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@ARTICLE{Gillmann:165948,
author = {C. Gillmann$^*$ and N. Homolka$^*$ and W. Johnen$^*$ and A.
Runz$^*$ and G. Echner$^*$ and A. Pfaffenberger$^*$ and P.
Mann$^*$ and V. Schneider$^*$ and A. L. Hoffmann and E.
Troost$^*$ and S. A. Koerber and J. Kotzerke and B.
Beuthien-Baumann$^*$},
title = {{T}echnical note: {ADAM} {PET}er - an anthropomorphic,
deformable and multimodality pelvis phantom with position
emission tomography extension for radiotherapy.},
journal = {Medical physics},
volume = {48},
number = {4},
issn = {2473-4209},
address = {College Park, Md.},
publisher = {AAPM},
reportid = {DKFZ-2020-02497},
pages = {1624-1632},
year = {2021},
note = {2021 Apr;48(4):1624-1632#EA:E040#LA:E010#},
abstract = {To develop an anthropomorphic, deformable and multimodal
pelvis phantom with positron emission tomography extension
for radiotherapy (ADAM PETer).The design of ADAM PETer was
based on our previous pelvis phantom (ADAM) and extended for
compatibility with PET and use in 3T magnetic resonance
imaging (MRI). The formerly manually manufactured silicon
organ surrogates were replaced by 3D printed organ shells.
Two intraprostatic lesions, four iliac lymph node metastases
and two pelvic bone metastases were added to simulate
prostate cancer as multifocal and metastatic disease.
Radiological properties (computed tomography (CT) and 3T
MRI) of cortical bone, bone marrow and adipose tissue were
simulated by heavy gypsum, a mixture of Vaseline and K2 HPO4
and peanut oil, respectively. For soft tissues, agarose gels
with varying concentrations of agarose, gadolinium (Gd) and
sodium fluoride (NaF) were developed. The agarose gels were
doped with patient-specific activity concentrations of a
Fluorine-18 labelled compound and then filled into the 3D
printed organ shells of prostate lesions, lymph node and
bone metastases. The phantom was imaged at a dual energy CT
and a 3T PET/MRI scanner.The compositions of the soft tissue
surrogates are the following (given as mass fractions of
$agarose[w\%]/NaF[w\%]/Gd[w\%]):$ Muscle (4/1/0.027),
prostate (1.35/4.2/0.011), prostate lesions
(2.25/4.2/0.0085), lymph node and bone metastases
(1.4/4.2/0.025). In all imaging modalities, the phantom
simulates human contrast. Intraprostatic lesions appear
hypointense as compared to the surrounding normal prostate
tissue in T2-weighted MRI. The PET signal of all tumors can
be localized as focal spots at their respective site.
Activity concentrations of 12.0 kBq/mL (prostate lesion),
12.4 kBq/mL (lymph nodes) and 39.5 kBq/mL (bone metastases)
were measured.The ADAM PETer pelvis phantom can be used as
multimodal, anthropomorphic model for CT, 3T-MRI and PET
measurements. It will be central to simulate and optimize
the technical workflow for the integration of PET/MRI-based
radiation treatment planning of prostate cancer patients.},
cin = {E040 / W060 / E010 / DD01},
ddc = {610},
cid = {I:(DE-He78)E040-20160331 / I:(DE-He78)W060-20160331 /
I:(DE-He78)E010-20160331 / I:(DE-He78)DD01-20160331},
pnm = {315 - Bildgebung und Radioonkologie (POF4-315)},
pid = {G:(DE-HGF)POF4-315},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:33207020},
doi = {10.1002/mp.14597},
url = {https://inrepo02.dkfz.de/record/165948},
}