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Lu X, Calabretta R, Wadsak W, Haug AR, Mayerhöfer M, Raderer M, Zhang X, Li J, Hacker M, Li X. Imaging Inflammation in Atherosclerosis with CXCR4-Directed [ 68Ga]PentixaFor PET/MRI-Compared with [ 18F]FDG PET/MRI. Life (Basel) 2022; 12:1039. [PMID: 35888127 PMCID: PMC9320215 DOI: 10.3390/life12071039] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2022] [Revised: 06/18/2022] [Accepted: 07/06/2022] [Indexed: 01/24/2023] Open
Abstract
(1) This study compared [68Ga]PentixaFor uptake in active arterial segments with corresponding [18F]FDG arterial uptake as well as the relationship with cardiac [68Ga]PentixaFor uptake. (2) Method: Tracer uptake on atherosclerotic lesions in the large arteries was measured and target-to-background ratios (TBR) were calculated to adjust background signals with two investigators blinded to the other PET scan. On a patient-based and lesion-to-lesion analysis, TBR values of two tracers were compared and the relationship with cardiac inflammation was further explored. Furthermore, two cardiovascular risk-related groups were divided to explore the value of risk stratification of the two tracers in atherosclerosis. (3) Results: [68Ga]PentixaFor PET/MRI identified more lesions (88% vs. 48%; p < 0.001) and showed higher uptake than [18F]FDG PET/MRI (TBR, 1.90 ± 0.36 vs. 1.63 ± 0.29; p < 0.001). In the patient-based analysis, the TBR of [68Ga]PentixaFor uptake was also significantly higher than [18F]FDG uptake (1.85 ± 0.20 vs. 1.42 ± 0.19; p < 0.001). The TBR of active lesions for [68Ga]PentixaFor was significantly increased in the high-risk group (n = 9), as compared to the low-risk group (n = 10) (2.02 ± 0.15 vs. 1.86 ± 0.10, p = 0.015), but not for [18F]FDG (1.85 ± 0.10 vs. 1.80 ± 0.07, p = 0.149). (4) Conclusion: [68Ga]PentixaFor PET/MRI identified many more lesions than [18F]FDG PET/MRI. Patients with high-risk cardiovascular factors illustrated an increased uptake of [68Ga]PentixaFor. There was a correlation between the elevated uptake of [68Ga]PentixaFor in the active arterial segments and heart.
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Affiliation(s)
- Xia Lu
- Division of Nuclear Medicine, Department of Biomedical Imaging and Image-Guided Therapy, Medical University of Vienna, 1090 Vienna, Austria; (X.L.); (R.C.); (W.W.); (A.R.H.); (J.L.); (M.H.)
- Department of Nuclear Medicine, Northern Jiangsu People’s Hospital, Yangzhou 225001, China
- Department of Nuclear Medicine, Laboratory for Molecular Imaging, Beijing Anzhen Hospital, Capital Medical University, Beijing 100029, China;
| | - Raffaella Calabretta
- Division of Nuclear Medicine, Department of Biomedical Imaging and Image-Guided Therapy, Medical University of Vienna, 1090 Vienna, Austria; (X.L.); (R.C.); (W.W.); (A.R.H.); (J.L.); (M.H.)
| | - Wolfgang Wadsak
- Division of Nuclear Medicine, Department of Biomedical Imaging and Image-Guided Therapy, Medical University of Vienna, 1090 Vienna, Austria; (X.L.); (R.C.); (W.W.); (A.R.H.); (J.L.); (M.H.)
- Center for Biomarker Research in Medicine, CBmed, 8036 Graz, Austria
| | - Alexander R. Haug
- Division of Nuclear Medicine, Department of Biomedical Imaging and Image-Guided Therapy, Medical University of Vienna, 1090 Vienna, Austria; (X.L.); (R.C.); (W.W.); (A.R.H.); (J.L.); (M.H.)
| | - Marius Mayerhöfer
- Department of Radiology, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY 10065, USA;
- Division of General and Pediatric, Radiology, Department of Biomedical Imaging and Image-Guided Therapy, Medical University of Vienna, 1090 Vienna, Austria
| | - Markus Raderer
- Department of Medicine I, Division of Oncology, Medical University of Vienna, 1090 Vienna, Austria;
| | - Xiaoli Zhang
- Department of Nuclear Medicine, Laboratory for Molecular Imaging, Beijing Anzhen Hospital, Capital Medical University, Beijing 100029, China;
| | - Jingle Li
- Division of Nuclear Medicine, Department of Biomedical Imaging and Image-Guided Therapy, Medical University of Vienna, 1090 Vienna, Austria; (X.L.); (R.C.); (W.W.); (A.R.H.); (J.L.); (M.H.)
| | - Marcus Hacker
- Division of Nuclear Medicine, Department of Biomedical Imaging and Image-Guided Therapy, Medical University of Vienna, 1090 Vienna, Austria; (X.L.); (R.C.); (W.W.); (A.R.H.); (J.L.); (M.H.)
| | - Xiang Li
- Division of Nuclear Medicine, Department of Biomedical Imaging and Image-Guided Therapy, Medical University of Vienna, 1090 Vienna, Austria; (X.L.); (R.C.); (W.W.); (A.R.H.); (J.L.); (M.H.)
- Department of Nuclear Medicine, Laboratory for Molecular Imaging, Beijing Anzhen Hospital, Capital Medical University, Beijing 100029, China;
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