User-defined ROI tracking for estimation of the myocardial blush grade

Condurache, Alexandru Paul; Aach, Til; Kaiser, Axel; Radke, Peter W.

doi:10.1109/ssiai.2006.1633723

Cited by 2 publications

(2 citation statements)

References 13 publications

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“…Morphological approach: outline the region of interest (ROI) for the blush out of a single frame based on morphological analysis and track the ROI in the consecutive frames [3]. The drawback of this approach is that the blush must show sufficient contrast to ensure its differentiation from other structures.…”

Section: State Of the Artmentioning

confidence: 99%

Angiographic Assessment of Myocardial Perfusion Using Correlation Analysis

Boese

Achenbach

et al. 2007

Bildverarbeitung Für Die Medizin 2007

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Abstract. Although angiography was originally designed as a morphological imaging modality, it is increasingly demanded to retrieve functional information from conventional angiograms. As X-ray angiography provides only 2D projection images, its most significant advantage over volumetric imaging modalities is its high temporal resolution. Thus the angiographic functional imaging relies mainly on the analysis of the temporal variation of single pixels or local regions. In order to assess the myocardial perfusion, the myocardium has to be recognized at first. This can be solved similarly with analysis of the time-intensity curves. Compared to most approaches in which the characteristic of the time-intensity curves are classified, our proposed method based on correlation analysis has the advantage of using all the sampled data points so that it is more robust against noise or outliers. As the correlation coefficient considers only the colinearity of two curves, we add the information about the amplitude and the numerical range of the curves, which further improves the recognition of the myocardium.

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Section: State Of the Artmentioning

confidence: 99%

Angiographic Assessment of Myocardial Perfusion Using Correlation Analysis

Boese

Achenbach

et al. 2007

Bildverarbeitung Für Die Medizin 2007

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“…All of these methods are negatively affected by the diaphragm motion. In [2], authors make explicit use of a method for diaphragm border detection [1] to improve the quality of the region-of-interest tracking that is used to measure the myocardial perfusion. In [3], authors claim that the breathing movements can hide staining patterns, showing that the diaphragm movement, and the consequent gray-level variation in an area, can reduce the method ability to measure the myocardial staining.…”

Section: Introductionmentioning

confidence: 99%

Robust and Accurate Diaphragm Border Detection in Cardiac X-Ray Angiographies

Petkov

Romero

Carrillo

et al. 2013

Statistical Atlases and Computational Models of the Heart. Imaging and Modelling Challenges

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X-ray angiography is the most common imaging modality employed in the diagnosis of coronary diseases prior or during a catheter-based intervention.The analysis of the patient X-Ray sequence can provide useful information about the degree of arterial stenosis, the myocardial perfusion and other clinical parameters. If the sequence has been acquired to evaluate the perfusion grade, the opacity due to the diaphragm could potentially hinder any kind of visual inspection and make more difficult a computer aided measurements.In this thesis we propose an accurate and robust method to automatically identify the diaphragm border in each frame. Quantitative evaluation on a set of 11 sequences shows that the proposed algorithm outperforms previous methods.ii I hope that this will help and will be used for something good.ii

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User-defined ROI tracking for estimation of the myocardial blush grade

Abstract: Abstract

Cited by 2 publications

References 13 publications

Angiographic Assessment of Myocardial Perfusion Using Correlation Analysis

Angiographic Assessment of Myocardial Perfusion Using Correlation Analysis

Robust and Accurate Diaphragm Border Detection in Cardiac X-Ray Angiographies

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