Sup 5: Image – Images with the max number of nodes in the head and neck region.
Side by side comparison of the maximum number of nodes visualised in the head and neck on the 18F-FDG PET/CT scans of the a) HIV-positive and b) HIV-negative participants. Head and neck nodes are not exclusively visualised in HIV-positive participants, although >4 nodes in the region are associated with HIV infection and more supraclavicular and posterior cervical nodes were visualised in HIV-positive patients.
a.) Two HIV-positive participants had 7 nodes visualised in the head and neck region. In this image, participant 167 is shown with a SUVmax in the head and neck of 5.87 and right hand side supraclavicular node (SUV:3.59).
b.) The maximum number of nodes visualised in the head and neck region of an HIV-negative participant was 10 (participant number 215) with a SUVmax of 5.05. This participant has posterior cervical nodes visualised and also had the highest number of abdominal nodes out of all of the HIV-negative participants (n=6).