Topological analysis of the vasculature of angiopoietin-expressing tumours through scale-space tracing

Reyes-Aldasoro, C. C., Björndahl, M. A., Kanthou, C. & Tozer, G. M. (2017). Topological analysis of the vasculature of angiopoietin-expressing tumours through scale-space tracing. Communications in Computer and Information Science, 723, pp. 285-296. doi: 10.1007/978-3-319-60964-5_25

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Abstract

This work describes the topological analysis of the vasculature of tumours. The analysis is performed with a scale-space technique, which traces the centrelines of vessels as topological ridges of the image intensities and then obtains a series of measurements, which are used to compare the vasculatures. Besides the measurements directly associated with the centrelines, the scales obtained allow the estimation of width andthusareacoveredwithvessels. Tumours of SW1222 human colorectal carcinoma xenografts were observed when growing in dorsal skin-fold window chambers in mice. Three variants of the tumours expressing either endogenous levels of angiopoietins (WT) or over-expressing either angiopoietin-1 (Ang-1) or angiopoietin-2 (Ang-2) were assessed with/without vascular targeted therapy. The scale-space technique was able to discriminate between the vasculatures of the three different tumour types prior to treatment. Results also suggested that over-expression of Ang-2 was associated with susceptibility of the tumour vasculature to the vascular disrupting agent, combretastatin A4 phosphate (CA4P). Substantiation of this finding would point to the potential of tumour Ang-2 expression as a predictive bio-marker for response to CA4P.

Item Type: Article
Additional Information: The final publication is available at Springer via http://dx.doi.org/10.1007/978-3-319-60964-5_25
Uncontrolled Keywords: Scale space analysis, Tracing of vasculature, Vascular disrupting agents, CA4P, Tumour microcirculation, Angiopoietin
Subjects: R Medicine > RC Internal medicine
T Technology > TA Engineering (General). Civil engineering (General)
Divisions: School of Engineering & Mathematical Sciences > Engineering
URI: http://openaccess.city.ac.uk/id/eprint/17944

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