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Figure 2 Scattergraph shows raw data of all lesion lumen areas correspondent to each mean reference EEL area. The dotted line (Y = 4.0) and the solid line (Y = 0.1X + 2.6) indicate the cutoff line that discriminates the SPECT (+) group from the SPECT (–) group. EEL, external elastic lamina; SPECT, single-photon emission computed tomography. Open circle = SPECT (+); solid circle = SPECT (–).