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In vivo quantification of 3D displacement in sacral soft tissues under compression: Relevance of 2D US-based measurements for pressure ulcer risk assessment

Article dans une revue avec comité de lecture
Auteur
ccMUKHINA, Ekaterina
1069746 Biomécanique des Tissus Vivants et des Matériaux – Modélisation et Caractérisation [TIMC-BIOMÉCA]
ccTREBBI, Alessio
1069746 Biomécanique des Tissus Vivants et des Matériaux – Modélisation et Caractérisation [TIMC-BIOMÉCA]
ccROHAN, Pierre-Yves
1001017 Institut de Biomécanique Humaine Georges Charpak [IBHGC]
ccCONNESSON, Nathanael
1069746 Biomécanique des Tissus Vivants et des Matériaux – Modélisation et Caractérisation [TIMC-BIOMÉCA]
PAYAN, Yohan
1069746 Biomécanique des Tissus Vivants et des Matériaux – Modélisation et Caractérisation [TIMC-BIOMÉCA]

URI
http://hdl.handle.net/10985/25445
DOI
10.1016/j.jtv.2022.09.007
Date
2022-09
Journal
Journal of Tissue Viability

Résumé

Objective 2D Ultrasound (US) imaging has been recently investigated as a more accessible alternative to 3D Magnetic Resonance Imaging (MRI) for the estimation of soft issue motion under external mechanical loading. In the context of pressure ulcer prevention, the aim of this pilot MRI study was to design an experiment to characterize the sacral soft tissue motion under a controlled mechanical loading. Such an experiment targeted the estimation of the discrepancy between tissue motion assessed using a 2D imaging modality (echography) versus tissue motion assessed using a (reference) 3D imaging modality (MRI). Methods One healthy male volunteer participated in the study. An MRI-compatible custom-made setup was designed and used to load the top region of the sacrum with a 3D-printed copy of the US transducer. Five MR images were collected, one in the unloaded and four in the different loaded configurations (400–1200 [g]). Then, a 3D displacement field for each loading configuration was extracted based on the results of digital volume correlation. Tissue motion was separated into the X, Y, Z directions of the MRI coordinate system and the ratios between the out-of-plane and in-plane components were assessed for each voxel of the selected region of interest. Results Ratios between the out-of-plane and in-plane displacement components were higher than 0.6 for more than half of the voxels in the region of interest for all load cases and higher than 1 for at least quarter of the voxels when loads of 400–800 [g] were used. Conclusion The out-of-ultrasound-plane tissue displacement was not negligible, therefore 2D US imaging should be used with caution for the evaluation of the tissue motion in the sacrum region. The 3D US modality should be further investigated for this application.

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Documents liés

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  • Reliability of B-mode ultrasound and shear wave elastography in evaluating sacral bone and soft tissue characteristics in young adults with clinical feasibility in elderly 
    Article dans une revue avec comité de lecture
    ABOU KARAM, Maher; MUKHINA, Ekaterina; DARAS, Nils; RIVALS, ISabelle; ccPILLET, Helene; ccSKALLI, Wafa; CONNESSON, Nathanael; PAYAN, Yohan; ccROHAN, Pierre-Yves (2022)
    Background: Physiologic aging is associated with loss of mobility, sarcopenia, skin atrophy and loss of elasticity. These factors contribute, in the elderly, to the occurrence of a pressure ulcer (PU). Brightness mode ...
  • MR-based quantitative measurement of human soft tissue internal strains for pressure ulcer prevention 
    Article dans une revue avec comité de lecture
    TREBBI, Alessio; MUKHINA, Ekaterina; CONNESSON, Nathanaël; BAILET, Mathieu; PERRIER, Antoine; PAYAN, Yohan; ccROHAN, Pierre-Yves (Elsevier BV, 2022-10)
    Pressure ulcers are a severe disease affecting patients that are bedridden or in a wheelchair bound for long periods of time. These wounds can develop in the deep layers of the skin of specific parts of the body, mostly ...
  • Calibration of the fat and muscle hyperelastic material parameters for the assessment of the internal tissue deformation in relation to pressure ulcer prevention 
    Communication avec acte
    MUKHINA, Ekaterina; CONNESSON, Nathanael; PAYAN, Yohan; ccROHAN, Pierre-Yves (Taylor and Francis, 2020)
    Presented work shows the possibility of using the US data for the assessment of the soft tissues’ material properties. This is clinically relevant, since US allows to obtain a subject-specific anatomical data, while being ...
  • Calibration of the fat and muscle hyperelastic material parameters for the assessment of the internal tissue deformation in relation to pressure ulcer prevention 
    Article dans une revue avec comité de lecture
    MUKHINA, Ekatrina; CONNESSON, Nathanael; PAYAN, Yohan; ccROHAN, Pierre-Yves (Taylor & Francis, 2020)
    Our group aims at proposing a protocol for evaluating the subject-specific risk for sacral pressure ulcer (PU). The idea is to model the way soft tissue will be deformed under the external pressure and to compute internal ...
  • Bilayer Stiffness Identification of Soft Tissues by Suction 
    Article dans une revue avec comité de lecture
    ccCONNESSON, Nathanael; ccBRIOT, Noémie; ccROHAN, Pierre-Yves; ccBARRAUD, Pierre Alain; ELAHI, Seyed Ali; PAYAN, Yohan (Springer (for Society for Experimental Mechanics), 2023-03)
    Background In vivo mechanical characterisation of biological soft tissue is challenging, even under moderate quasi-static loading. Clinical application of suction-based methods is hindered by usual assumptions of tissues ...

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