Skip to main content
main-content

01.12.2018 | Short communication | Ausgabe 1/2018 Open Access

EJNMMI Research 1/2018

A novel partial volume correction method for accurate quantification of [18F] flortaucipir in the hippocampus

Zeitschrift:
EJNMMI Research > Ausgabe 1/2018
Autoren:
Emma E. Wolters, Sandeep S. V. Golla, Tessa Timmers, Rik Ossenkoppele, Chris W. J. van der Weijden, Philip Scheltens, Lothar Schwarte, Robert C. Schuit, Albert D. Windhorst, Frederik Barkhof, Maqsood Yaqub, Adriaan A. Lammertsma, Ronald Boellaard, Bart N. M. van Berckel
Wichtige Hinweise

Electronic supplementary material

The online version of this article (https://​doi.​org/​10.​1186/​s13550-018-0432-2) contains supplementary material, which is available to authorized users.
Emma E. Wolters and Sandeep S. V. Golla contributed equally to this work.

Abstract

Background

Off-target binding in the choroid plexus (CP) may cause spill-in of the tau PET tracer [18F] flortaucipir into the adjacent hippocampus region. The impact of this spill-in on hippocampal uptake was assessed using a novel partial volume correction method (PVC).

Methods

PVC was performed on 20 [18F] flortaucipir dynamic PET scans (10 probable AD and 10 controls). Volumes of interest (VOIs) were defined for both hippocampus and CP. The correlation between hippocampal and CP distribution volume (VT), with and without PVC, was determined. Both anatomically defined and eroded VOIs were used.

Results

For controls, the correlation between hippocampal and CP VT was significantly reduced after using PVC along with an eroded VOI (r2 = 0.59, slope = 0.80 versus r2 = 0.15, slope = 0.15; difference: p < 0.05). The same was true for AD patients (p < 0.05).

Conclusion

PVC together with an optimized hippocampal VOI resulted in effective reduction of CP spill-in and improved accuracy of hippocampal VT.
Zusatzmaterial
Literatur
Über diesen Artikel

Weitere Artikel der Ausgabe 1/2018

EJNMMI Research 1/2018 Zur Ausgabe