Fig. 2From: EANM dosimetry committee series on standard operational procedures: a unified methodology for 99mTc-MAA pre- and 90Y peri-therapy dosimetry in liver radioembolization with 90Y microspheresSchematic coronal slice of the two major difficulties that are encountered for segmentation: breathing motion (C and D) and tumours with low-perfusion regions (B and D)Back to article page