The kinetics of 18 F-FDG in lung cancer: compartmental models and voxel analysis

EJNMMI Research
Erica SilvestriMaria Lucia Calcagni

Abstract

The validation of the most appropriate compartmental model that describes the kinetics of a specific tracer within a specific tissue is mandatory before estimating quantitative parameters, since the behaviour of a tracer can be different among organs and diseases, as well as between primary tumours and metastases. The aims of our study were to assess which compartmental model better describes the kinetics of 18F-Fluorodeoxygluxose(18F-FDG) in primary lung cancers and in metastatic lymph nodes; to evaluate whether quantitative parameters, estimated using different innovative technologies, are different between lung cancers and lymph nodes; and to evaluate the intra-tumour inhomogeneity. Twenty-one patients (7 females; 71 ± 9.4 years) with histologically proved lung cancer, prospectively evaluated, underwent 18F-FDG PET-CT for staging. Spectral analysis iterative filter (SAIF) method was used to design the most appropriate compartmental model. Among the compartmental models arranged using the number of compartments suggested by SAIF results, the best one was selected according to Akaike information criterion (AIC). Quantitative analysis was performed at the voxel level. K1, Vb and Ki were estimated with three advanced methods: SA...Continue Reading

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Citations

Sep 15, 2019·Australasian Physical & Engineering Sciences in Medicine·Redha-Alla AbdoM'hamed Bentourkia

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Methods Mentioned

BETA
biopsy
biopsies
X-ray

Software Mentioned

AIC
Syntegra
naïve

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