Fig. 1

Anterior planar and SPECT-CT ¹²³I–mIBG scintigraphy. The planar image (a) shows clear uptake of ¹²³I–mIBG uptake in various organ: liver, urinary bladder and evident uptake of ¹²³I–mIBG in both kidneys. b Shows the ROI on the planar image of the left kidney trying to exclude any pelvic activity. c Shows a coronal slice of the SPECT-CT showing the proximity of the liver to the right kidney. The proximity of the liver to the right kidney can also be appreciated on the planar images (a). Thereby, both planar and SPECT images illustrate the possible impact of liver activity on parameters of ¹²³I–mIBG uptake in the right kidney