Fig. 1

Study flowchart. Abbreviations: QFR, quantitative flow ratio; μFR, Murray low-based quantitative flow ratio; dQFR/ds, instantaneous QFR ratio gradient per unit length.
Study flowchart. Abbreviations: QFR, quantitative flow ratio; μFR, Murray low-based quantitative flow ratio; dQFR/ds, instantaneous QFR ratio gradient per unit length.