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Figure 1 For analysis of intracoronary ultrasound (ICUS) and multidetector computer tomography (MDCT) data, the coronary arteries were divided into 3-mm sections. White lines indicate 3-mm intervals of the right coronary artery (RCA) in the longitudinal view of ICUS (D) and MDCT (B). (A) Axial MDCT view of a calcified plaque. (B) Longitudinal MDCT view of the RCA containing a partly calcified and noncalcified plaque; the level of image A is indicated by the white line. (C) Corresponding axial ICUS view. (D) Longitudinal ICUS view of the RCA; the level of the axial image C is indicated by the arrow.