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DOI: 10.3413/nuk-2011041
PET- und SPECT-Untersuchungen von Hirn tumoren mit radioaktiv markierten Aminosäuren
German guidelines for brain tumour imaging by PET and SPECT using labelled amino acidsPublikationsverlauf
received:
06. Juli 2011
accepted in revised form:
06. Juli 2011
Publikationsdatum:
28. Dezember 2017 (online)
Summary
For the primary diagnosis of brain tumours, morphological imaging by means of magnetic resonance imaging (MRI) is the current method of choice. The complementary use of functional imaging by positron emitting tomography (PET) and single photon emitting computerized tomography (SPECT) with labelled amino acids can provide significant information on some clinically relevant questions, which are beyond the capacity of MRI. These diagnostic issues affect in particular the improvement of biopsy targeting and tumour delineation for surgery and radiotherapy planning. In addition, amino acid labelled PET and SPECT tracers are helpful for the differentiation between tumour recurrence and non-specific post-therapeutic tissue changes, in predicting prognosis of low grade gliomas, and for metabolic monitoring of treatment response. The application of dynamic PET examination protocols for the assessment of amino acid kinetics has been shown to enable an improved non-invasive tumour grading.
The purpose of this guideline is to provide practical assistance for indication, examination procedure and image analysis of brain PET/ SPECT with labelled amino acids in order to allow for a high quality standard of the method. After a short introduction on pathobiochemistry and radiopharmacy of amino acid labelled tracers, concrete and detailed information is given on the several indications, patient preparation and examination protocols as well as on data reconstruction, visual and quantitative image analysis and interpretation. In addition, possible pitfalls are described, and the relevant original publications are listed for further information.
Zusammenfassung
Während für die Primärdiagnostik von Hirn - tumoren die Magnetresonanztomographie (MRT) das Verfahren der Wahl darstellt, kommt der funktionellen Bildgebung mittels PET und SPECT unter Verwendung markierter Aminosäuren besondere Bedeutung für weitergehende Fragestellungen zu. Diese betreffen die Bestimmung des optimalen Biopsieorts und der genauen Tumorausdehnung sowie auch die Therapiekontrolle, Prognose und die Rezdivdiagnostik. Darüber hinaus können dynamische PET-Messprotokolle wichtige Informationen zum nicht invasiven Tumor - grading liefern.
Die vorliegende Leitlinie soll dem Arzt eine praxisorientierte Hilfestellung zur Indikation, Durchführung und Auswertung der PET/ SPECT mit Aminosäure-Tracern bieten, um damit einen hohen Qualitätsstandard dieser wichtigen Methode zu gewährleisten. Nach einer kurzen Einführung in die Pathobiochemie und Radiopharmazie markierter Aminosäuren liefert die Leitlinie konkrete und detaillierte Informationen zur Indikationsstellung, der Untersuchungsvorbereitung und -durchführung, der Datenrekonstruktion sowie zur visuellen und quantitativen Bildanalyse und -interpretation. Zusätzlich erfolgt eine Darstellung der möglichen Fehlerquellen sowie der relevanten Originalarbeiten.
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