FDG Uptake in the Basal Forebrain as Measured by Digital High-Resolution PET Is a Promising Marker of Basal Forebrain Degeneration in the Lewy Body Disease Spectrum: A Pilot Study
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FDG Uptake in the Basal Forebrain as Measured by Digital High-Resolution PET Is a Promising Marker of Basal Forebrain Degeneration in the Lewy Body Disease Spectrum: A Pilot Study. / Özden, Cansu; Frings, Lars; Apostolova, Ivayla; Lange, Catharina; Klutmann, Susanne; Adam, Gerhard; Bannas, Peter; Meyer, Philipp T; Grothe, Michel J; Buchert, Ralph.
in: CLIN NUCL MED, Jahrgang 45, Nr. 4, 04.2020, S. 261-266.Publikationen: SCORING: Beitrag in Fachzeitschrift/Zeitung › SCORING: Zeitschriftenaufsatz › Forschung › Begutachtung
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TY - JOUR
T1 - FDG Uptake in the Basal Forebrain as Measured by Digital High-Resolution PET Is a Promising Marker of Basal Forebrain Degeneration in the Lewy Body Disease Spectrum: A Pilot Study
AU - Özden, Cansu
AU - Frings, Lars
AU - Apostolova, Ivayla
AU - Lange, Catharina
AU - Klutmann, Susanne
AU - Adam, Gerhard
AU - Bannas, Peter
AU - Meyer, Philipp T
AU - Grothe, Michel J
AU - Buchert, Ralph
PY - 2020/4
Y1 - 2020/4
N2 - PURPOSE: Cognitive decline in diseases of the Lewy body spectrum (LBS) is linked to dysfunction/degeneration of the basal forebrain (BF). Assessment of glucose metabolism in the BF by FDG PET is hampered by the small size of the BF and limited spatial resolution of conventional PET. This pilot study tested the feasibility of assessing BF glucose metabolism by high-resolution digital PET (dPET).PATIENTS AND METHODS: The retrospective study included 12 LBS patients (61-86 years, 5 demented). Whole-brain stereotactic normalization to anatomical standard space was followed by local stereotactic normalization of a 7 × 7 × 7-cm box around the BF to a custom-made 1 × 1 × 1-mm FDG dPET template. FDG uptake was scaled voxelwise to mean FDG uptake in the pons. Scaled FDG uptake in the BF was compared between demented and nondemented LBS patients and tested for correlation with cortical FDG uptake.RESULTS: Scaled FDG uptake in the BF was significantly lower in demented compared with nondemented patients (1.14 ± 0.09 vs 1.25 ± 0.06, P = 0.031). Brain-wide voxel-based testing for correlations with scaled FDG uptake in the BF revealed a large cluster comprising medial and ventrolateral frontal cortex, anterior cingulate cortex, insular cortex, and striatum as well as smaller clusters in motor cortex and occipital cortex (P < 0.001, uncorrected).CONCLUSIONS: These results suggest that dementia-associated BF degeneration in LBS can be sensitively measured as reduced BF FDG uptake on dPET. More accurate delineation of the BF based on individual high-resolution MRI might be useful to make optimal use of improved spatial resolution of dPET and to correct for possible disease- and age-dependent partial volume effects.
AB - PURPOSE: Cognitive decline in diseases of the Lewy body spectrum (LBS) is linked to dysfunction/degeneration of the basal forebrain (BF). Assessment of glucose metabolism in the BF by FDG PET is hampered by the small size of the BF and limited spatial resolution of conventional PET. This pilot study tested the feasibility of assessing BF glucose metabolism by high-resolution digital PET (dPET).PATIENTS AND METHODS: The retrospective study included 12 LBS patients (61-86 years, 5 demented). Whole-brain stereotactic normalization to anatomical standard space was followed by local stereotactic normalization of a 7 × 7 × 7-cm box around the BF to a custom-made 1 × 1 × 1-mm FDG dPET template. FDG uptake was scaled voxelwise to mean FDG uptake in the pons. Scaled FDG uptake in the BF was compared between demented and nondemented LBS patients and tested for correlation with cortical FDG uptake.RESULTS: Scaled FDG uptake in the BF was significantly lower in demented compared with nondemented patients (1.14 ± 0.09 vs 1.25 ± 0.06, P = 0.031). Brain-wide voxel-based testing for correlations with scaled FDG uptake in the BF revealed a large cluster comprising medial and ventrolateral frontal cortex, anterior cingulate cortex, insular cortex, and striatum as well as smaller clusters in motor cortex and occipital cortex (P < 0.001, uncorrected).CONCLUSIONS: These results suggest that dementia-associated BF degeneration in LBS can be sensitively measured as reduced BF FDG uptake on dPET. More accurate delineation of the BF based on individual high-resolution MRI might be useful to make optimal use of improved spatial resolution of dPET and to correct for possible disease- and age-dependent partial volume effects.
KW - Aged
KW - Basal Forebrain/diagnostic imaging
KW - Female
KW - Fluorodeoxyglucose F18
KW - Humans
KW - Lewy Body Disease/diagnostic imaging
KW - Male
KW - Middle Aged
KW - Pilot Projects
KW - Positron-Emission Tomography/methods
KW - Predictive Value of Tests
KW - Radiopharmaceuticals
U2 - 10.1097/RLU.0000000000002960
DO - 10.1097/RLU.0000000000002960
M3 - SCORING: Journal article
C2 - 32108697
VL - 45
SP - 261
EP - 266
JO - CLIN NUCL MED
JF - CLIN NUCL MED
SN - 0363-9762
IS - 4
ER -