Worldwide deployment of COVID-19 vaccines is in progress. Recent immune activation following vaccination can sometimes be seen in fluorine-18-fluorodeoxyglucose positron emission tomography/computed tomography ([18F]-FDG PET/CT). As previously evidenced, FDG-avid axillary lymph node(s) are common in patients receiving vaccines against SARS-CoV-2, influenza virus, or human papillomavirus, and reflect a regional immune response. In addition, these findings may also be accompanied by an increased spleen glucose metabolism after the COVID-19 vaccine, which captures a systemic immune response. Hence, we provide here a clinical example demonstrating that immune response could be associated with increased glucose metabolism in lymphoid organs such as lymph nodes and the spleen, which are critical modulators of T cell immunity. We believe that it is of paramount importance that nuclear physicians should be able to recognize clinical and imaging features of such immune responses upon vaccination for COVID-19 and beyond.
【저자키워드】 COVID-19 vaccine, immune response, lymph nodes, spleen, [18F]-FDG PET/CT, 【초록키워드】 COVID-19, SARS-CoV-2, Vaccine, vaccination, Immunity, tomography, Influenza virus, metabolism, T cell, immune activation, Patient, Critical, Glucose, Lymph node, PET/CT, systemic immune response, human papillomavirus, physician, nuclear, recent, feature, example, addition, receiving, recognize, evidenced, accompanied, Lymphoid Organ, 【제목키워드】 COVID-19, response, PET/CT,