Three Dimensional Reconstruction and Airflow Simulation in a Realistic Model of the Human Respiratory Airways

Ruiz, A.; Aristizabal, Jenny Kateryne Nieto

doi:10.1007/978-981-10-4086-3_134

Cited by 2 publications

(1 citation statement)

References 9 publications

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“…The fluid simulation analysis for patient one ( Figure 4 ) revealed the effect of different degrees of stenosis on the pressure distribution in and around the patch area. The pressure distribution under normal morphology was uniform, and the pressure on the medial side of the tracheal wall was between −4 and 2 Pa, which is consistent with the study of Ruiz ( Ruiz and Aristizabal, 2017 ). However, the pressure on the trachea with 33% stenosis ranged from −1–7 Pa, and the minimum value was found near the wall, where the pressure was −7.5 Pa. A lower pressure was observed on the trachea with 50% stenosis, ranging from −1 to −10 Pa, and the lowest pressure was −10.7 Pa near the wall.…”

Section: Resultssupporting

confidence: 90%

A preliminary biomechanical study on trachea reconstruction surgery using the clavicular periosteum

Zhu

Sun²,

Xia³

et al. 2023

Front. Bioeng. Biotechnol.

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Introduction: The clavicular periosteum is a suitable material for trachea reconstruction. However, because the periosteum is softer and has different mechanical properties than tracheal cartilage, the mechanical loads under physiological conditions after trachea reconstruction may cause collapse or stenosis of the repaired trachea.Methods: In this study, the mechanical properties of the clavicular periosteum were tested, and the 3D trachea geometry was constructed based on CT-scanning images acquired before the surgery. Differing degrees of stenosis (0%, 33%, and 55%) for the repaired trachea sections were predetermined, presenting the different degrees of the tracheal cross-sectional area immediately after clavicular periosteum reconstruction. Then the biomechanical environments of the trachea and the airflow were simulated and analyzed.Results: In the fluid mechanics simulation, the air pressure on the patch area decreased with increasing degrees of stenosis, while the fluid velocity increased as stenosis increased. In solid mechanics simulations, patch area deformation increased as the cross-sectional area of the trachea decreased, and the stress in the patch increased as stenosis increased.Discussion: The solid stress changes may cause tissue remodeling, thickening, and scarring of the patch area. The fluid mechanical changes in the repaired trachea would further aggravate the stenosis. The numerical simulation study would provide references for biomechanical evaluation of trachea reconstruction surgery. The surgical indications may be expanded in the future based on the model prediction results.

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Section: Resultssupporting

confidence: 90%

A preliminary biomechanical study on trachea reconstruction surgery using the clavicular periosteum

Zhu

Sun²,

Xia³

et al. 2023

Front. Bioeng. Biotechnol.

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Evidence-based impact by clinical engineers on global patients outcomes

David¹,

Judd²

2019

Health Technol.

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The intersection of technological changes and societal evolution has transformed every aspect of human life. Technological advancements are transforming how healthcare knowledge is expanding and accelerating the outreach of critical medical services delivery (Jamal et al. in Health Information Management Journal 38(3):26-37, 2009). While this transformation facilitates new opportunities simultaneously it also introduces challenges (Jacobzone and Oxley, 2001). Appropriate Health Technology (HT) is vital to new and existing global health care programs. Therefore, qualified professionals who can safely guide the development, evaluation, installation, integration, performance assurance, and risk mitigation of HT must be in position to lead. Trained Clinical Engineers (CE) and Biomedical Engineers (BE) have been recognized by the World Health Organization (WHO) as the essential practitioners to providing this critically needed guidance. Over the past four years, a senior professional group participated in an international project that seeks evidence for the hypothesis-that the engagement of CE and BE in guiding HTimpacts positively on patient outcomes, while the alternative is that there is no difference. The group collected published data that was subjected to peer review screening; additional data qualification conditions are described in this paper. The project was initiated at the Global CE Summit during the first International Clinical Engineering and Health Technology Management Congress (ICEHTMC) in Hangzhou, China in October 2015 (Global Clinical Engineering Summit at the First International Clinical Engineering and Health Technology Management Congress, 2015). Following the adoption of a resolution to investigate CE contributions to the improvement of world health status, an international survey and literature survey were initiated. During the first two years of this project 150 case studies from 90 countries were identified covering the previous ten years. The results of this survey were presented to health leaders at the World Health Organization (WHO) World Health Assembly in 2016. Last year, 250 case studies were added including 35 more countries covering the 2016-2017 period. The combined project contains 400 qualified submissions from 125 countries. The conclusion was that engagement of CE and BME is critical for successful investment in HT and for achieving intended patient outcomes. This paper describes the project's plan, the results of the literature review performed, and the evidence identified during the process.

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Three Dimensional Reconstruction and Airflow Simulation in a Realistic Model of the Human Respiratory Airways

Cited by 2 publications

References 9 publications

A preliminary biomechanical study on trachea reconstruction surgery using the clavicular periosteum

A preliminary biomechanical study on trachea reconstruction surgery using the clavicular periosteum

Evidence-based impact by clinical engineers on global patients outcomes

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