1. Coronary Calcification and Plaque Vulnerability An Optical Coherence Tomographic Study

    Coronary Calcification and Plaque Vulnerability An Optical Coherence Tomographic Study

    Background— Spotty superficial calcium deposits have been implicated in plaque vulnerability based on previous intravascular imaging studies. Biomechanical models suggest that microcalcifications between 5 and 65 µm in diameter can intensify fibrous cap stress, promoting plaque rupture. However, the 100- to 200-µm resolution of intravascular ultrasound limits its ability to discriminate single calcium deposits from clusters of smaller deposits, and a previous optical coherence tomographic investigation evaluated calcifications within a long segment of artery, which may not truly reflect the mechanics involved in potentiating focal plaque rupture. Methods and Results— Detailed optical coherence tomographic assessment of coronary calcification at ...

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