CBS 2019
CBSMD教育中心
中 文

Optical Coherence Tomography

Abstract

Recommended Article

Coronary Optical Coherence Tomography and Cardiac Magnetic Resonance Imaging to Determine Underlying Causes of Myocardial Infarction With Nonobstructive Coronary Arteries in Women A new optical coherence tomography-based calcium scoring system to predict stent underexpansion Uncovered Culprit Plaque Ruptures in Patients With ST-Segment Elevation Myocardial Infarction Assessed by Optical Coherence Tomography and Intravascular Ultrasound With iMap Angiography Alone Versus Angiography Plus Optical Coherence Tomography to Guide Percutaneous Coronary Intervention: Outcomes From the Pan-London PCI Cohort Coronary Artery Intraplaque Microvessels by Optical Coherence Tomography Correlate With Vulnerable Plaque and Predict Clinical Outcomes in Patients With Ischemic Angina Coronary Atherosclerosis T1-Weighed Characterization With Integrated Anatomical Reference: Comparison With High-Risk Plaque Features Detected by Invasive Coronary Imaging Superficial Calcium Fracture After PCI as Assessed by OCT Device specificity of vascular healing following implantation of bioresorbable vascular scaffolds and bioabsorbable polymer metallic drug-eluting stents in human coronary arteries: the ESTROFA OCT BVS vs. BP-DES study
|<< 1 2 3 4 5 6 7 8 9 >>|

Original Research2019 Mar 8. [Epub ahead of print]

JOURNAL：JACC Cardiovasc Imaging. Article Link

Spontaneous Coronary Artery Dissection: Pathophysiological Insights From Optical Coherence Tomography

Jackson R, Al-Hussaini A, Adlam D et al. Keywords: intracoronary imaging; optical coherence tomography; spontaneous coronary artery dissection

ABSTRACT

OBJECTIVES - This study used optical coherence tomography to investigate the mechanism of false lumen (FL) formation in spontaneous coronary artery dissection (SCAD) by studying: 1) differences between fenestrated and nonfenestrated SCAD; 2) vasa vasorum density; and 3) light attenuation characteristics of the FL.


BACKGROUND - SCAD is an increasingly recognized cause of acute coronary syndromes, characterized by FL formation and compression of the true lumen (TL). The mechanisms underlying FL formation remain poorly understood.


METHODS - A total of 65 SCAD patients (68 vessels) who underwent acute OCT imaging as part of routine clinical care were included. Images were classified by the absence or presence of a connection (fenestration) between the TL and FL. Indexed measurements of TL stenosis, external elastic lamina (EEL) area, FL area, and light attenuation of the FL were assessed. Vasa vasorum densities of SCAD cases were compared with those in control non-SCAD myocardial infarction cases.


RESULTS - In nonfenestrated cases, there was significantly larger expansion of the EEL area (9.1% vs. -1.9%; p <0.05) and a larger FL area (73.6% vs. 53.2%, respectively; p <0.05) in dissected segments. No significant differences were found between vasa vasorum density in SCAD and those in control subjects. The FL contents were heterogeneous but attenuated less light than whole blood or thrombus (4.28 ± 0.55 mm-1 vs. 5.08 ± 0.56 mm-1; p < 0.05; vs. 4.96 ± 0.56 mm-1; p < 0.05).


CONCLUSIONS - These observational data suggest that the absence of a fenestration leads to increased FL pressure and compression of the TL. Although vasa vasorum may still be implicated in pathogenesis, increased vasa vasorum density could be an epiphenomenon of vascular healing.

Copyright © 2019 American College of Cardiology Foundation. All rights reserved.

>CBS CBS 2019

> CBS 2019 REGISTRATION

> CBS 2019 PROGRAM

> CBS 2019 CALL FOR SCIENCE

> CBS 2019 SPOTLIGHTS

 CBSMD

> CBSMD WEBSITE REGISTRATION

> EDUCATION CENTER

> RECOMMANDED PAPER

> TOP 10 RESEARCH PAPER

> PRE-READING

CBS 2019 CBS 2019 FACULTY Education Resource CBSMD Scientific Library
Copyright ⓒ CBS MD Nanjing China. All rights reserved. 京ICP备16025898号-11
联系我们| Top