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EJNMMI Physics
Fig. 5 | EJNMMI Physics

Fig. 5

From: Comparison of Otsu and an adapted Chan–Vese method to determine thyroid active volume using Monte Carlo generated SPECT images

Fig. 5

Deviation of size estimates for 20 ml phantom. The calculated volumes for the 20 ml phantom, of Chan–Vese and Otsu method, relative to true size per relative background activity cencentration (rows from bottom to top show 5, 10, 15 and 20 %) and relative hotspot activity concentration (columns from left to right show 100, 150, 200 and 250 %). The figures below each panel show the deviation (in percentages) from true size

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