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EJNMMI Physics
Fig. 5 | EJNMMI Physics

Fig. 5

From: 166Holmium–99mTechnetium dual-isotope imaging: scatter compensation and automatic healthy-liver segmentation for 166Holmium radioembolization dosimetry

Fig. 5

Nominal volume recovery and Sørensen–Dice index obtained from segmentation of the 99mTc images using a threshold approach. On the left, the percentage of recovered nominal volume using the threshold approach for the three VOIs under investigation is shown: sphere S1 (panel A), sphere S2 (panel B) and healthy-liver compartment (panel C). Blue circles refer to measurements acquired in presence of 99mTc only, while green triangles represent measurements acquired in presence of both 99mTc and 166Ho. The results are displayed as function of the total effective 99mTc activity in the phantom. On the right (panel D, E and F), the corresponding Sørensen–Dice index is shown

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