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Erschienen in: Der Radiologe 7/2003

01.07.2003 | Demenzerkrankungen

MR-Volumetrie zur Darstellung von Verteilung und zeitlicher Abfolge neokortikaler Degeneration bei Morbus Alzheimer

verfasst von: Dr. G. Leinsinger, S. Teipel, A. Wismüller, C. Born, T. Meindl, W. Flatz, S. Schönberg, J. Pruessner, H. Hampel, M. Reiser

Erschienen in: Die Radiologie | Ausgabe 7/2003

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Zusammenfassung

Fragestellung

Volumetrische Analyse des Corpus callosum und Hippokampus mittels MRT bei der Alzheimer-Erkrankung (AD), mit dem Ziel die regionale Verteilung und Progression der neokortikalen relativ zur allokortikalen Neurodegeneration zu erfassen.

Methodik

In mehreren Studienabschnitten wurden Patienten mit AD und gesunde Kontrollen untersucht. Als Grundlage für die Volumetrie diente eine sagittale 3D-T1w–Gradientenechosequenz. Die Vermessung des Corpus callosum (CC) erfolgte in der mittsagittalen Schicht, wobei 5 Subregionen definiert wurden. Die Volumetrie des Hippokampus-Amygdala-Komplexes (HAK) wurde durch Segmentierung an koronar reorientierten Schichten durchgeführt.

Ergebnisse

Bei Patienten mit AD fand sich eine signifikante Atrophie in Rostrum und Splenium des CC. Dabei zeigte sich eine Korrelation der Atrophie mit dem Schweregrad der Demenz, jedoch nicht mit dem Ausmaß von Marklagerläsionen. Im Vergleich mit der 18FDG-PET fand sich eine signifikante Korrelation zwischen dem Muster der CC-Atrophie und dem regionalen Glukosemetabolismus. Eine ROC-Analyse zeigte sogar in frühen Stadien der Erkrankung keinen signifikanten Unterschied für die diagnostische Genauigkeit der Volumina von HAK und Region C5 (Splenium) des CC.

Schlussfolgerungen

Die regionale Atrophie des CC kann bereits in frühen Demenzstadien zur Beurteilung von Ausmaß und Verteilung einer neokortikalen Neurodegeneration eingesetzt werden.
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Metadaten
Titel
MR-Volumetrie zur Darstellung von Verteilung und zeitlicher Abfolge neokortikaler Degeneration bei Morbus Alzheimer
verfasst von
Dr. G. Leinsinger
S. Teipel
A. Wismüller
C. Born
T. Meindl
W. Flatz
S. Schönberg
J. Pruessner
H. Hampel
M. Reiser
Publikationsdatum
01.07.2003
Verlag
Springer-Verlag
Erschienen in
Die Radiologie / Ausgabe 7/2003
Print ISSN: 2731-7048
Elektronische ISSN: 2731-7056
DOI
https://doi.org/10.1007/s00117-003-0928-1

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