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Comparison of [68 Ga]Ga-FAPI-04 and [18F]-FDG for the detection of primary and metastatic lesions in patients with gastric cancer: a bicentric retrospective study.
- Source :
- European Journal of Nuclear Medicine & Molecular Imaging; Jan2022, Vol. 49 Issue 2, p732-742, 11p, 3 Color Photographs, 3 Diagrams, 3 Charts
- Publication Year :
- 2022
-
Abstract
- Introduction: The low sensitivity of [<superscript>18</superscript>F]-fluorodeoxyglucose ([<superscript>18</superscript>F]-FDG) for the diagnosis of gastric cancer limits its application. In this study, we aimed to investigate the potential advantage of [<superscript>68</superscript> Ga]Ga-FAPI-04 over [<superscript>18</superscript>F]-FDG in the evaluation of gastric cancer. Methods: This was a bicentric retrospective analysis of a prospective parent study (clinical trial: HS-KY-2020–826 (Huashan Hospital) and DF-2020–102 (Shanghai East Hospital)). Thirty-eight patients with gastric cancer (31 with adenocarcinoma and 7 with signet ring cell carcinoma) were included in this study. All of the participants underwent [<superscript>68</superscript> Ga]Ga-FAPI-04 and [<superscript>18</superscript>F]-FDG imaging by positron emission tomography (PET)/computed tomography (CT) or PET/magnetic resonance (MR). The scans were interpreted by two experienced nuclear medicine physicians, and the maximum standardized uptake value (SUV<subscript>max</subscript>) was calculated. Histopathological findings obtained from biopsy or resected surgical specimens were used as a reference for the final diagnosis. Results: For the detection of primary gastric cancer, the sensitivities of [<superscript>68</superscript> Ga]Ga-FAPI-04 PET and [<superscript>18</superscript>F]-FDG PET were 100% (38/38) and 82% (31/38), respectively (P = 0.016). Four cases of adenocarcinoma and three cases of signet ring cell carcinoma were missed by [<superscript>18</superscript>F]-FDG PET. The mean SUV<subscript>max</subscript> of [<superscript>68</superscript> Ga]Ga-FAPI-04 in tumours greater than 4 cm (11.0 ± 4.5) was higher than that in tumours less than 4 cm (4.5 ± 3.2) (P = 0.0015). The mean SUV<subscript>max</subscript> of [<superscript>68</superscript> Ga]Ga-FAPI-04 was higher in T2–4 tumours (9.7 ± 4.4) than in T1 tumours (3.1 ± 1.5) (P = 0.0002). For the detection of metastatic lesions, the sensitivities of [<superscript>68</superscript> Ga]Ga-FAPI-04 PET and [<superscript>18</superscript>F]-FDG PET in 10 patients with regional lymph node metastasis and distant metastasis were 6/10 and 5/10, respectively. Conclusion: In this selected cohort, [<superscript>68</superscript> Ga]Ga-FAPI-04 PET had a superior detection rate than [<superscript>18</superscript>F]-FDG PET for primary gastric cancer. [<superscript>68</superscript> Ga]Ga-FAPI-04 PET could provide better performance with regard to gastric cancer diagnosis and staging. Prospective clinical trials are warranted. [ABSTRACT FROM AUTHOR]
- Subjects :
- STOMACH cancer
POSITRON emission tomography
CANCER patients
LYMPHATIC metastasis
METASTASIS
MAGNETIC resonance
STOMACH tumors
ADENOCARCINOMA
BIOPSY
FIBROBLASTS
RETROSPECTIVE studies
RADIOPHARMACEUTICALS
DESCRIPTIVE statistics
DEOXY sugars
COMPUTED tomography
NUCLEAR medicine
LONGITUDINAL method
PARENTS
ALLIED health personnel
Subjects
Details
- Language :
- English
- ISSN :
- 16197070
- Volume :
- 49
- Issue :
- 2
- Database :
- Complementary Index
- Journal :
- European Journal of Nuclear Medicine & Molecular Imaging
- Publication Type :
- Academic Journal
- Accession number :
- 154982375
- Full Text :
- https://doi.org/10.1007/s00259-021-05441-w