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@ARTICLE{Hagen:275835,
author = {Hagen, Johannes and Scheifele, Maximilian and Zacherl,
Mathias J and Katzdobler, Sabrina and Bernhardt, Alexander
and Brendel, Matthias and Levin, Johannes and Höglinger,
Günter U and Clauß, Sebastian and Kääb, Stefan and
Todica, Andrei and Boening, Guido and Fischer, Maximilian},
title = {{D}iagnostic {E}fficacy of
123{I}odo-{M}etaiodobenzylguanidine {SPECT}/{CT} in
{C}ardiac vs. {N}eurological {D}iseases: {A} {C}omparative
{S}tudy of {A}rrhythmogenic {R}ight {V}entricular
{C}ardiomyopathy and α-{S}ynucleinopathies.},
journal = {Diagnostics},
volume = {15},
number = {1},
issn = {2075-4418},
address = {Basel},
publisher = {MDPI},
reportid = {DZNE-2025-00070},
pages = {24},
year = {2025},
abstract = {Background/Objectives: 123Iodo-metaiodobenzylguanidine
single photon emission computed tomography/computed
tomography (123I-MIBG SPECT/CT) is used to evaluate the
cardiac sympathetic nervous system in cardiac diseases such
as arrhythmogenic right ventricular cardiomyopathy (ARVC)
and α-synucleinopathies such as Parkinson's diseases. A
common feature of these diseases is denervation. We aimed to
compare quantitative and semi-quantitative cardiac
sympathetic innervation using 123I-MIBG imaging of ARVC and
α-synucleinopathies. Methods: Cardiac innervation was
assessed using 123I-MIBG SPECT/CT in 20 patients diagnosed
with definite ARVC and 8 patients with clinically diagnosed
α-synucleinopathies. Heart-to-mediastinum-ratio
(H/M-ratio), as semi-quantitative, was evaluated.
Additionally, standardized uptake value (SUV), as
quantitative, was measured as SUVmedian, SUVmax, and SUVpeak
in the left ventricle (LV), the right ventricle (RV), and in
the global heart, based on a CT scan following quantitative
image reconstruction. Results: The quantification of
123I-MIBG uptake in the LV, the RV, and the global heart was
feasible in patients suffering from α-synucleinopathies.
SUVmedian, and SUVpeak demonstrated a significant difference
between ARVC and α-synucleinopathies across all regions,
with the α-synucleinopathy group showing a lower uptake. In
addition, the H/M ratio showed significantly lower uptake in
patients with α-synucleinopathies than in patients with
ARVC. Conclusions: Patients with α-synucleinopathies
demonstrate significantly lower cardiac innervation in
semi-quantitative and quantitative examinations than ARVC
patients. The comparison of semi-quantitative and
quantitative examinations suggests that quantitative
examination offers an advantage. Quantitative analysis can
be performed separately for the LV, RV, and global heart.
However, analyzing the LV or RV does not provide additional
benefit over analyzing the global heart in distinguishing
between α-synucleinopathies and ARVC. Considering the
different clinical manifestations of these two diseases, the
absolute SUV values should not be generalized across
different pathologies, and disease-specific ranges should be
used instead.},
keywords = {123I-MIBG (Other) / ARVC (Other) / RV (Other) / SUV (Other)
/ heart (Other) / α-synucleinopathies (Other)},
cin = {Clinical Research (Munich) / AG Haass / AG Levin},
ddc = {610},
cid = {I:(DE-2719)1111015 / I:(DE-2719)1110007 /
I:(DE-2719)1111016},
pnm = {353 - Clinical and Health Care Research (POF4-353) / 352 -
Disease Mechanisms (POF4-352)},
pid = {G:(DE-HGF)POF4-353 / G:(DE-HGF)POF4-352},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:39795552},
pmc = {pmc:PMC11720076},
doi = {10.3390/diagnostics15010024},
url = {https://pub.dzne.de/record/275835},
}