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Biomedical Physics & Engineering Express

Resumen/Descripción – provisto por la editorial en inglés

A broad, inclusive, rapid review journal devoted to publishing new research in all areas of biomedical engineering, biophysics and medical physics, with a special emphasis on interdisciplinary work between these fields.

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Información

Tipo de recurso:

revistas

ISSN electrónico

2057-1976

Editor responsable

IOP Publishing (IOP)

País de edición

Estados Unidos

Fecha de publicación

2015-

Cobertura temática

Ciencias físicas

Tabla de contenidos

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doi: 10.1088/2057-1976/ab285e

Semi-automatic method for segmentation of the internal jugular vein in ultrasound movies evaluated at different body postures

Arvid Westlund; Petter Holmlund; Elias Johansson; Jan Malm; Anders Eklund

<jats:title>Abstract</jats:title> <jats:p> <jats:italic>Objective:</jats:italic> The collapse of the internal jugular vein (IJV) regulates intracranial pressure (ICP) in upright body positions. The cross-section area (CSA) is therefore of interest when studying the effects of postural changes in various neurological diseases. We have developed a semi-automatic segmentation method, which tracks the CSA of the IJV in ultrasound movies, and evaluated its performance in three body positions (supine, 16°, 71°). <jats:italic>Approach:</jats:italic> The proposed method utilized post-processing image filtering combined with a modified snake active contour algorithm. The ultrasound movies were retrospectively analysed (n = 231, 3s, 28 fps) based on previously collected data from 17 healthy volunteers. The computed CSAs (CA) from the segmentation method were compared to manually segmented CSAs (MA) in two frames per movie. Tracking performance were evaluated by visual inspection. <jats:italic>Main results:</jats:italic> In the supine position, 100% of the ultrasound movies were tracked successfully, and the mean of CA-MA was −4.4 ± 6.9 mm<jats:sup>2</jats:sup> (MA, 88.4 ± 50.5 mm<jats:sup>2</jats:sup>). The most challenging movies occurred in upright body posture where tracking success rate was 90% and mean of CA-MA was −1.4 ± 2.2 mm<jats:sup>2</jats:sup> (MA, 12.0 ± 11.1 mm<jats:sup>2</jats:sup>). The semi-automatic segmentations took 55 s to perform on average (per movie) compared to manual segmentations which took 50 min. <jats:italic>Significance:</jats:italic> Segmentations made by the proposed method were comparable to manual segmentations in all tilt-angles, however much faster. Efficient and accurate tracking of the CSA of the IJV, with respect to postural changes, could help furthering our understanding of how IJV-biomechanics relates to regulation of intracranial pressure in different neurological diseases and physiological states.</jats:p>