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Figure 3 (A, B) Preprocedure angiograms showing a "true bifurcation" lesion (type D) in the proximal left anterior descending coronary artery/first diagonal branch in the cranial and left anterior oblique (LAO) views, respectively. (C, D) Final angiograms showing optimal angiographic result after crush-stenting at the bifurcation lesion (cranial and LAO views, respectively). (E) Intravascular ultrasound image showing the distal portion of the side branch (SB) (first diagonal) stent. (F) Intravascular ultrasound of the SB ostium showing stent underexpansion. MV = main vessel.