alexa Implication of plaque color classification for assessing plaque vulnerability: a coronary angioscopy and optical coherence tomography investigation.
Cardiology

Cardiology

Angiology: Open Access

Author(s): Kubo T

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OBJECTIVES:

The purpose of this study was to assess the relationship between plaque color evaluated by coronary angioscopy and fibrous cap thickness estimated by optical coherence tomography (OCT) in vivo.

BACKGROUND:

Yellow color intensity of coronary plaque evaluated by coronary angioscopy might be associated with plaque vulnerability.

METHODS:

Seventy-seven coronary artery plaques in patients with acute coronary syndrome were observed by angioscopy and OCT. Plaque color was graded as white, light yellow, yellow, or intensive yellow.

RESULTS:

There were significant differences among the groups classified by plaque color with respect to the fibrous cap thickness estimated by OCT: 389 +/- 74 mum in white plaques, 228 +/- 51 microm in light yellow plaques, 115 +/- 28 microm in yellow plaques, and 59 +/- 14 microm in intensive yellow plaques (p < 0.0001). In Spearman rank-order correlation analysis, there was a significant negative correlation between yellow color intensity and fibrous cap thickness (p < 0.0001). Furthermore, 80% of intensive yellow plaques were thin cap fibroatheroma with a cap thickness of < or =65 microm.

CONCLUSIONS:

The plaque color in coronary angioscopy was determined by the fibrous cap thickness, which was assessed by OCT. Although coronary angioscopy remains a specialized research tool, it might allow us to evaluate plaque vulnerability.

This article was published in JACC Cardiovasc Interv and referenced in Angiology: Open Access

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