Fig. 3From: Automatic delineation and quantification of pulmonary vascular obstruction index in patients with pulmonary embolism using Perfusion SPECT-CT: a simulation studyComparison of the three segmentation methods in terms of DICEPE indices. DICEPE are presented for all PE volumes in the first row and according to the PVOI in the second row. RelDiff method with − 50% threshold shows overall higher DICEPE indices, especially for small and medium PEBack to article page