Abstract
Purpose
[68 Ga]Ga-FAPI-04 PET/CT has been widely used in oncology patients. The patients need to lie still for 20–30 min during scan after waiting for 60 min post-tracer injection in traditional [68 Ga]Ga-FAPI-04 PET/CT scan. This is difficult for some patients who are intolerant to prolonged horizontal positioning and waiting time. Therefore, we evaluated the diagnostic value of the images obtained in ultra-early and fast scan (5-min p.i., 30-s acquisition time) by the total-body [68 Ga]Ga-FAPI-04 PET/CT and to investigate whether they could meet the requirements of clinical diagnosis.
Methods
Total-body [68 Ga]Ga-FAPI-04 PET/CT was conducted in 12 patients at the Renji Hospital. Patients underwent PET with two acquisitions: 5-min p.i. and 30-s acquisition time (ultra-early and fast imaging) and 60-min p.i. and 300-s acquisition time (traditional imaging). Mean [68 Ga]Ga-FAPI-04 injection dose was 1.85 MBq/kg.
Results
Forty-four lesions were detected in 12 patients on traditional imaging. All the 44 lesions on conventional imaging could also detected by ultra-early and fast imaging. For all the 12 patients, the tumor stage did not change, as same lesions were visible for every case in both images. There was no statistically significant difference in SUVmax of lesions between ultra-early and fast imaging and traditional imaging (12.5 ± 8.7 vs 13.7 ± 8.5, P = 0.528). Background bloodpool (4.0 ± 0.6 vs 0.9 ± 0.2, P < 0.001)and liver (2.5 ± 0.7 vs 1.0 ± 0.5, P < 0.001)at traditional imaging showed a significant decrease in SUVmean compared to ultra-early and fast imaging.
Conclusions
Ultra-early and fast imaging versus traditional [68 Ga]Ga-FAPI-04 imaging resulted in equivalent tumor detection and lesion uptake. Ultra-early and fast total-body [68 Ga]Ga-FAPI-04 PET/CT scan could meet clinical diagnostic requirements for patients with poor tolerant to prolonged horizontal positioning and waiting time.
Similar content being viewed by others
Data availability
The data could be obtained from the corresponding author upon request.
References
Lindner T, Loktev A, Altmann A, et al. Development of quinoline-based theranostic ligands for the targeting of fibroblast activation protein. J Nucl Med. 2018;59:1415–22.
Loktev A, Lindner T, Mier W, et al. A tumor-imaging method targeting cancer-associated fibroblasts. J Nucl Med. 2018;59:1423–9.
Treglia G, Muoio B, Roustaei H, Kiamanesh Z, Aryana K, Sadeghi R. Head-to-head comparison of fibroblast activation protein inhibitors (FAPI) radiotracers versus [(18)F]F-FDG in oncology: a systematic review. Int J Mol Sci 2021;22
Kuten J, Levine C, Shamni O, et al. Head-to-head comparison of [(68)Ga]Ga-FAPI-04 and [(18)F]-FDG PET/CT in evaluating the extent of disease in gastric adenocarcinoma. Eur J Nucl Med Mol Imaging. 2022;49:743–50.
Giesel FL, Kratochwil C, Schlittenhardt J, et al. Head-to-head intra-individual comparison of biodistribution and tumor uptake of (68)Ga-FAPI and (18)F-FDG PET/CT in cancer patients. Eur J Nucl Med Mol Imaging. 2021;48:4377–85.
Qin C, Liu F, Huang J, et al. A head-to-head comparison of (68)Ga-DOTA-FAPI-04 and (18)F-FDG PET/MR in patients with nasopharyngeal carcinoma: a prospective study. Eur J Nucl Med Mol Imaging. 2021;48:3228–37.
Pang Y, Zhao L, Luo Z, et al. Comparison of (68)Ga-FAPI and (18)F-FDG uptake in gastric, duodenal, and colorectal cancers. Radiology. 2021;298:393–402.
Zhao L, Pang Y, Zheng H, et al. Clinical utility of [(68)Ga]Ga-labeled fibroblast activation protein inhibitor (FAPI) positron emission tomography/computed tomography for primary staging and recurrence detection in nasopharyngeal carcinoma. Eur J Nucl Med Mol Imaging. 2021;48:3606–17.
Qin C, Shao F, Gai Y, et al. (68)Ga-DOTA-FAPI-04 PET/MR in the evaluation of gastric carcinomas: comparison with (18)F-FDG PET/CT. J Nucl Med. 2022;63:81–8.
Shi X, Xing H, Yang X, et al. Comparison of PET imaging of activated fibroblasts and (18)F-FDG for diagnosis of primary hepatic tumours: a prospective pilot study. Eur J Nucl Med Mol Imaging. 2021;48:1593–603.
Badawi RD, Shi H, Hu P, et al. First human imaging studies with the EXPLORER total-body PET scanner. J Nucl Med. 2019;60:299–303.
Zhang X, Zhou J, Cherry SR, Badawi RD, Qi J. Quantitative image reconstruction for total-body PET imaging using the 2-meter long EXPLORER scanner. Phys Med Biol. 2017;62:2465–85.
Zhang X, Xie Z, Berg E, et al. Total-body dynamic reconstruction and parametric imaging on the uEXPLORER. J Nucl Med. 2020;61:285–91.
Wen J, Zhu Y, Li L, Liu J, Chen Y, Chen R. Determination of optimal (68) Ga-PSMA PET/CT imaging time in prostate cancers by total-body dynamic PET/CT. Eur J Nucl Med Mol Imaging. 2022;49:2086–95.
Zhang X, Cherry SR, Xie Z, Shi H, Badawi RD, Qi J. Subsecond total-body imaging using ultrasensitive positron emission tomography. Proc Natl Acad Sci U S A. 2020;117:2265–7.
Zhang YQ, Hu PC, Wu RZ, et al. The image quality, lesion detectability, and acquisition time of (18)F-FDG total-body PET/CT in oncological patients. Eur J Nucl Med Mol Imaging. 2020;47:2507–15.
Meyer C, Dahlbom M, Lindner T, et al. Radiation dosimetry and biodistribution of (68)Ga-FAPI-46 PET imaging in cancer patients. J Nucl Med. 2020;61:1171–7.
Funding
This work was supported by the National Key R&D Program of China (No. 2021YFA0910004) and the National Natural Science Foundation of China (No. 82171972).
Author information
Authors and Affiliations
Corresponding authors
Ethics declarations
Ethics approval
The study involving human participants was in line with principles of the ethics committee in Renji Hospital and the Declaration of Helsinki in 1964. Animal-based research was not included in this study.
Consent to participate
The informed consent was waived.
Consent for publication
Not applicable.
Conflict of interest
The authors declare no competing interests.
Additional information
Publisher's note
Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.
This article is part of the Topical Collection on Technology.
Rights and permissions
Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
About this article
Cite this article
Chen, R., Yang, X., Yu, X. et al. The feasibility of ultra-early and fast total‑body [68 Ga]Ga-FAPI-04 PET/CT scan. Eur J Nucl Med Mol Imaging 50, 661–666 (2023). https://doi.org/10.1007/s00259-022-06004-3
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s00259-022-06004-3