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Fig. 1 | EJNMMI Physics

Fig. 1

From: Automatic delineation and quantification of pulmonary vascular obstruction index in patients with pulmonary embolism using Perfusion SPECT-CT: a simulation study

Fig. 1

Example of simulated PE with corresponding parametric maps: digital phantom (a), simulated SPECT (b), registered NMmap (c), and NSDmap (d), corresponding calculated RelDiffmap (e) and Zmap (f). The Zmap shows a defect in the right upper lobe while there is no perfusion defect. The RelDiffMap provides a better contrast between functional and no functional areas

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