Characterization of coronary plaque in intravascular ultrasound using histological correlation

2002 ◽  
Author(s):  
K.J. Dixon ◽  
D.G. Vince ◽  
R.M. Cothren ◽  
J.F. Cornhill
Keyword(s):  
Intravascular Ultrasound ◽  
Coronary Plaque

scholarly journals Global characterization of coronary plaque rupture phenotype using three-vessel intravascular ultrasound radiofrequency data analysis

2006 ◽  
Vol 27 (16) ◽  
pp. 1921-1927 ◽  
Author(s):  
Gastón A. Rodriguez-Granillo ◽  
Héctor M. García-García ◽  
Marco Valgimigli ◽  
Sophia Vaina ◽  
Carlos van Mieghem ◽  
...  
Keyword(s):  
Data Analysis ◽  
Intravascular Ultrasound ◽  
Plaque Rupture ◽  
Coronary Plaque

Automated Characterization of Atheromatous Plaque in Intravascular Ultrasound Images Using Neuro Fuzzy Classifier

2012 ◽  
Vol 58 (4) ◽  
pp. 425-431 ◽  
Author(s):  
D. Selvathi ◽  
N. Emimal ◽  
Henry Selvaraj
Keyword(s):  
Intravascular Ultrasound ◽  
Human Error ◽  
Human Life ◽  
Classification Performance ◽  
Atheromatous Plaque ◽  
Ultrasound Images ◽  
Fuzzy Classifier ◽  
Neuro Fuzzy ◽  
Calcified Tissues

Abstract The medical imaging field has grown significantly in recent years and demands high accuracy since it deals with human life. The idea is to reduce human error as much as possible by assisting physicians and radiologists with some automatic techniques. The use of artificial intelligent techniques has shown great potential in this field. Hence, in this paper the neuro fuzzy classifier is applied for the automated characterization of atheromatous plaque to identify the fibrotic, lipidic and calcified tissues in Intravascular Ultrasound images (IVUS) which is designed using sixteen inputs, corresponds to sixteen pixels of instantaneous scanning matrix, one output that tells whether the pixel under consideration is Fibrotic, Lipidic, Calcified or Normal pixel. The classification performance was evaluated in terms of sensitivity, specificity and accuracy and the results confirmed that the proposed system has potential in detecting the respective plaque with the average accuracy of 98.9%.

scholarly journals Integrated backscatter-intravascular ultrasound and modification of plaque during excimer laser coronary angioplasty

2021 ◽  
Author(s):  
Satoru Sasaki ◽  
Kenji Nakajima ◽  
Keizo Watanabe ◽  
Yudai Nozaki ◽  
Tadashi Yuguchi ◽  
...  
Keyword(s):  
Intravascular Ultrasound ◽  
Excimer Laser ◽  
Coronary Angioplasty ◽  
Coronary Plaque ◽  
Cross Sectional ◽  
Integrated Backscatter ◽  
Before And After ◽  
Vessel Volume ◽  
Integrated Backscatter Intravascular Ultrasound ◽  
Excimer Laser Coronary Angioplasty

AbstractThis study aims to test the hypothesis that the effect of excimer laser coronary angioplasty (ELCA) not only vaporizes thrombi and their underlying coronary plaque, it also changes their quality. We performed a series of cross-sectional analyses in 52 lesions in 51 patients before and after ELCA with integrated backscatter-intravascular ultrasound (IB-IVUS). The constituent parts of the plaque can be assessed by IB-IVUS (i.e., calcified, fibrous, lipid) according to integrated backscatter values. Minimum lumen diameter, lumen volume and vessel volume expanded after ELCA, while plaque volume did not significantly decrease. There was also a decrease of ‘lipid’ component (35.4–30.3%, P < 0.001) and an increase of IB-IVUS-derived ‘fibrous’ part (34.5–38.3%, P < 0.001). These results may help in understanding plaque change after ELCA. Excimer laser coronary angioplasty seems to contribute to the modification of coronary plaque composition in addition to debulking it.

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