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Piyush Aggarwal,Anupriya Anwariya,Anwin Joseph Kavanal,Ashwani Sood,Santosh Ranjan Jena,Bhagwant Rai Mittal 대한핵의학회 2023 핵의학 분자영상 Vol.57 No.3
Peptide receptor radionuclide therapy (PRRT) has become an established treatment for patients with inoperable and/ormetastatic, well-differentiated neuroendocrine tumors with overexpression of somatostatin receptor type 2 (SSTR-2). Thepost-therapy 177Lu-DOTATATE whole-body scan not only assesses the biodistribution of the lesions seen on pre-therapy68 Ga-SSTR PET/CT scan but also provides a quick assessment of disease status and dosimetry during treatment. Like anyother radionuclide scan, the whole-body 177Lu-DOTATATE scan may also show abnormal radiotracer uptake, which mayrequire further imaging to establish its exact etiology. Though radiotracer emboli mimicking focal pulmonary lesions havebeen described with 18F-FDG and 68 Ga-DOTANOC PET/CT scans, similar artifacts with post-therapy 177Lu-DOTATATEscans have not been described. Herein, we report two cases of hot emboli in the post-therapy 177Lu-DOTATATE scans.