A Review of Vessel Segmentation Methodologies and Algorithms: Comprehensive Review

A Review of Vessel Segmentation Methodologies and Algorithms: Comprehensive Review

Gehad Hassan, Aboul Ella Hassanien
Copyright: © 2017 |Pages: 17
DOI: 10.4018/978-1-5225-2229-4.ch009
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“Prevention is better than cure”, true statement which all of us neglect. One of the most reasons which cause speedy recovery from any diseases is to discover it in advanced stages. From here come the importance of computer systems which preserve time and achieve accurate results in knowing the diseases and its first symptoms .One of these systems is retinal image analysis system which considered as a key role and the first step of Computer Aided Diagnosis Systems (CAD). In addition to monitor the patient health status under different treatment methods to ensure How it effects on the disease.. In this chapter the authors examine most of approaches that are used for vessel segmentation for retinal images, and a review of techniques is presented comparing between their quality and accessibility, analyzing and catgrizing them. This chapter gives a description and highlights the key points and the performance measures of each one.
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Retinal image analysis is one of systems which help on diagnosing almost of diseases in advanced stages like (hypertension, diabetic retinopathy, hemorrhages, macular degeneration, glaucoma, neo-vascularization and vein occlusion), in addition to achieving accurate result and saving time (Bernardes, Serranho, & Lobo, 2011). It is the main first step of Computer Aided Diagnosis (CAD) systems and registration of patient images. This diagnosis done by detection of some morphological features and attributes of the retinal vasculature like width, length, branching pattern or tortuosity and angles. And on another level, manually detection of retinal vasculature is very difficult because of the complexity and the low contrast of blood vessels in retinal image (Asad, Azar, & Hassanien, 2014). Here come the importance of vessel segmentation as a pre-step in most of medical applications .

No specific method is existed which segments the vasculature from each retinal image modality. So on classifying the segmentation methods, we should put in our mind some important factors such as application domain, method being automated or semi-automated, imagining modality, and other factors (Miri & Mahloojifar, 2011; Fraz, Remagnino, Hoppe, & Barman, 2013) . And also not lose sight of the amount of effort and time which taken in the manual manner of the retinal blood vessel segmentation, in addition to our need for training and skill.

Sometimes we may need a preprocessing step before the actual algorithm of segmentation method is executed; this is due to other factors such as noise or bad acquisition that effect on the quality of image. In the opposite some methods perform post-processing in order to treat some problems which happened after segmentation method. And there are methods which not to do neither this nor that.

In this chapter, the authors present a review about the most methodologies of blood vessel segmenttion; to provide the algorithms which employed for vessel segmentation to researchers to be considered as ready reference; to discuss the advantages and limitations of these approaches; to discuss the current trends and future challenges to be opened for solving, then it discusses the proposed approach for vessel segmentation which will be completely explained in the next sections.

Key Terms in this Chapter

Blood Vessel: A tubular channel that is characterized as flexible like a vein, an artery, and a capillary, and the blood passes through it to the eye.

Blood Vessel Extraction: An automatic processing step to extract vessels away from image to investigate the existence on some disease.

Lesions: A pathologic change in the tissues and individual points of multifocal disease.

Magnetic Resonance Imaging: A method which used to obtain images of the interiors of objects, as humans and animals, it uses radio-frequency waves on its caption.

Macular Degeneration: A disease happened in the eye, especially destroys the macula and caues blindness because it effects on the center of vision.

Hemorrhages: Secretions and ample blood as a result of a ruptured blood vessel.

Neural Network: A Deep learning technology depends on simulating the nature of brain to solve pattern recognition problems.

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