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. 2022 Jun;63(6):875–881. doi: 10.2967/jnumed.121.262790

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© 2022 by the Society of Nuclear Medicine and Molecular Imaging.

Immediate Open Access: Creative Commons Attribution 4.0 International License (CC BY) allows users to share and adapt with attribution, excluding materials credited to previous publications. License: https://creativecommons.org/licenses/by/4.0/. Details: http://jnm.snmjournals.org/site/misc/permission.xhtml.

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FIGURE 4. — PET/CT scans with ¹⁸F-FDG (A) and ⁶⁸Ga-FAPI (B) in a 41-y-old male patient (patient 5) with metastatic adenocarcinoma of right neck. ¹⁸F-FDG PET/CT was negative for detection of primary. On ⁶⁸Ga-FAPI PET/CT, there was intensive uptake in right submandibular gland (B, red arrow; SUV_max = 15.80), whereas low background uptake was seen in left submandibular gland (SUV_max ratio = 6.87). Subsequent surgery confirmed salivary ductal carcinoma. Black and white arrows indicate metastatic lymph nodes.