Enhancement of nerve structure segmentation by a correntropy-based pre-image approach
Journal Title: TecnoLógicas - Year 2017, Vol 20, Issue 39
Abstract
Peripheral Nerve Blocking (PNB) is a commonly used technique forperformingregional anesthesia and managing pain. PNB comprises the administration of anestheticsin the proximity of a nerve. In this sense, the success of PNB procedures depends on an accurate location of the target nerve. Recently, ultrasound images (UI) havebeen widely used to locate nerve structures forPNB,since theyenable a non-invasive visualization of the target nerve and the anatomical structures around it. However, UIare affected by speckle noise, which makes it difficult to accuratelylocatea given nerve. Thus, it is necessary to perform a filtering step to attenuate the speckle noise without eliminating relevant anatomical details that are required for high-level tasks, suchas segmentation of nerve structures. In this paper, we propose an UI improvement strategy with the use of a pre-image-based filter. In particular, we map the input images bya nonlinear function (kernel). Specifically,we employ a correntropy-based mappingas kernel functionalto code higher-order statistics of the inputdata under both nonlinear and non-Gaussian conditions. We validate our approach againstan UI dataset focused on nerve segmentation for PNB. Likewise, our Correntropy-based Pre-Image Filtering (CPIF) is applied as a pre-processing stage to segment nerve structures in a UI. The segmentation performance is measured in terms of the Dice coefficient. According to the results, we observe that CPIF finds a suitable approximation for UI by highlighting discriminative nerve patterns.
Authors and Affiliations
J. Gil-González, A. Álvarez-Meza, M. Álvarez-López
Keywords
Related Articles
- EP ID EP348408
- DOI 10.22430/22565337.717
- Views 121
- Downloads 0
Comparison of multiobjective harmony search, cuckoo search and bat-inspired algorithms for renewable distributed generation placement
Electric power losses have a significant impact on the total costs of distribution networks. The use of renewable energy sources is a major alternative to improve power losses and costs, although other important issues a...
Influence of the pulse wave in the stratification of high density particles in a JIG device
A study of particle motion subjected to four different pulsation profiles on a pulsated fluidized bed jig concentrator was carried out. The profiles used in the simulation were – sinusoidal, triangle, sawtooth-backward a...
Copper alloy coatings manufactured by oxy-fuel thermal spray onto a porcelain substrate
A coated system consisting of a ceramic substrate and a coating of a copper alloy was developed in order to provide electrically conductive properties to specific surface of the substrate. The coatings were elaborated by...
Methodology for determining angular displacement in three-phase transformers
This paper presents methodology for determining angular displacement (connections or vector group (colloquial)) in three-phase transformers. The proposed methodology is useful to determin...
Videogame for Water Conservation Teaching
Teaching water sustainability is a key element for environmental protection. Although that is true at all educational levels, it is vitally important during primary education because it enables students to develop adequa...