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Erschienen in: European Journal of Nuclear Medicine and Molecular Imaging 6/2021

07.01.2021 | Original Article

Role of [68Ga]Ga-DOTA-FAPI-04 PET/CT in the evaluation of peritoneal carcinomatosis and comparison with [18F]-FDG PET/CT

verfasst von: Liang Zhao, Yizhen Pang, Zuoming Luo, Kaili Fu, Tingting Yang, Long Zhao, Long Sun, Hua Wu, Qin Lin, Haojun Chen

Erschienen in: European Journal of Nuclear Medicine and Molecular Imaging | Ausgabe 6/2021

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Abstract

Purpose

The aim of this study was to explore the role of [68Ga]Ga-DOTA-FAPI-04 positron emission tomography/computed tomography (PET/CT), compared with 18F-fluorodeoxyglucose [18F]-FDG PET/CT, for evaluating peritoneal carcinomatosis in patients with various types of cancer.

Methods

Patients with suspected peritoneal malignancy, who underwent both [18F]-FDG and [68Ga]Ga-DOTA-FAPI-04 PET/CT between October 2019 and August 2020, were retrospectively analysed. The radiotracer uptake, peritoneal cancer index (PCI) score, and diagnostic performance of [18F]-FDG and [68Ga]Ga-DOTA-FAPI-04 PET/CT were evaluated and compared.

Results

Our cohort consisted of 46 patients, including 16 patients with diffuse-type peritoneal carcinomatosis, 27 with nodular-type peritoneal carcinomatosis, and 3 true-negative patients. A significant difference in standard uptake values (SUV) of lesions between [18F]-FDG and [68Ga]Ga-DOTA-FAPI-04 PET/CT examination was observed (median SUV: 3.48 vs. 9.82; P < 0.001), particularly in peritoneal carcinomatosis from gastric cancer (median SUV: 3.44 vs. 8.05; P = 0.001). Moreover, [68Ga]Ga-DOTA-FAPI-04 PET/CT showed a higher PCI score and better sensitivity than [18F]-FDG PET/CT for the detection of peritoneal carcinomatosis (6 vs. 18; P < 0.001; 72.09% vs. 97.67%; P = 0.002).

Conclusion

[68Ga]Ga-DOTA-FAPI-04 PET/CT demonstrated superior sensitivity over [18F]-FDG PET/CT for the detection of peritoneal carcinomatosis in patients with various types of cancer, particularly gastric cancer. Furthermore, the uptake of [68Ga]Ga-DOTA-FAPI-04 in peritoneal carcinomatosis was significantly higher than that of [18F]-FDG, demonstrating a larger extent of the lesions and yielding a higher PCI score. This could help enhance the image contrast, improve physicians’ diagnostic confidence, and reduce the proportion of missed diagnoses.
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Metadaten
Titel
Role of [68Ga]Ga-DOTA-FAPI-04 PET/CT in the evaluation of peritoneal carcinomatosis and comparison with [18F]-FDG PET/CT
verfasst von
Liang Zhao
Yizhen Pang
Zuoming Luo
Kaili Fu
Tingting Yang
Long Zhao
Long Sun
Hua Wu
Qin Lin
Haojun Chen
Publikationsdatum
07.01.2021
Verlag
Springer Berlin Heidelberg
Erschienen in
European Journal of Nuclear Medicine and Molecular Imaging / Ausgabe 6/2021
Print ISSN: 1619-7070
Elektronische ISSN: 1619-7089
DOI
https://doi.org/10.1007/s00259-020-05146-6

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