Usefulness of Virtual Histology Intravascular Ultrasound to Predict Distal Embolization for ST-Segment Elevation Myocardial Infarction
Ren Kawaguchi, MD*,
Shigeru Oshima, MD, PhD,
Masaaki Jingu, RT,
Hideki Tsurugaya, MD,
Takuji Toyama, MD, PhD,
Hiroshi Hoshizaki, MD, PhD and
Koichi Taniguchi, MD, PhD
Division of Cardiology, Gunma Prefectural Cardiovascular Center, Maebashi, Gunma, Japan
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Figure 1 Correlation Between Total Plaque Volume and Each Plaque Composition
A strong positive correlation was found between total plaque volume and percentage of dense calcium. A negative correlation between total plaque volume and percentage of fibrosis was found; however, there were no correlations between total plaque volume and percentage of necrotic core or fibro-lipid.
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Figure 2 Receiver-Operating Characteristic Analysis of the Plaque Component Volume and STR
Prognostic value of plaque composition volume in predicting ST-segment re-elevation (STR) after stent deployment is shown in the table. AUC = area under the curve; CI = confidence interval.
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Figure 3 Virtual Histology Intravascular Ultrasound Images of an STR Case and a Non-STR Case
Immediately after the stent deployment, no electrocardiographic change and optimal coronary flow were observed in case A, although ST-segment re-elevation (STR) and delayed coronary flow were observed in case B. MLA = minimal lumen area.
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