Digitale Positronenemissionstomografie – Entwicklung, Detektortechnologie und Perspektiven

Zusammenfassung

Dieser Übersichtsartikel präsentiert die Entwicklung und den technischen Fortschritt der Positronenemissionstomografie (PET) hin zum digital arbeitenden PET-System (dPET). Der Fokus liegt hierbei auf den PET-Hardwarekomponenten zur Detektierung sowie Verarbeitung und Ortung des Signals zur klinischen Bildgebung. Es werden technische Unterscheidungen und Vorteile der dPET-Systeme gegenüber konventionellen PET-Systemen aufgezeigt. Dazu zählen zum Beispiel größere Detektorflächen mit sehr empfindlichen und kompakten Photodetektorsystemen in Verbindung mit einer verbesserten Elektronik zur schnellen Berechnung der Orts-, Zeit- und Energieauflösungen der Signale. Die daraus neu erschlossenen Anwendungsbereiche und Perspektiven in der dPET-Bildgebung werden zusätzlich thematisiert.

Abstract

This review article presents the development and technical progress of positron emission tomography (PET) towards the digital working PET system (dPET). The focus is on the PET hardware components for detecting, processing, and locating the signal for clinical imaging. Technical differences and advantages of dPET systems over conventional PET systems are highlighted. These include, for example, larger detector areas with very sensitive and compact photodetector systems combined with improved electronics to rapidly calculate the spatial, time and energy resolutions of annihilation events. The resulting new application areas and perspectives in dPET imaging will be additionally addressed.

Schlüsselwörter

Positronenemissionstomografie - Szintillationskristalle - Photodetektoren - Avalanche-Photodioden - Silizium Photomultiplier - digitales PET

Key Words

Positron emission tomography - scintillation crystals - photodetectors - avalanche photodiodes - silicon photomultiplier - digital PET

Publication History

Article published online:
16 August 2022

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