Details
| Original language | English |
|---|---|
| Title of host publication | Medical Imaging 2019 |
| Subtitle of host publication | Image-Guided Procedures, Robotic Interventions, and Modeling |
| Editors | Baowei Fei, Cristian A. Linte |
| Publisher | SPIE |
| ISBN (electronic) | 9781510625495 |
| Publication status | Published - 2019 |
| Event | Medical Imaging 2019: Image-Guided Procedures, Robotic Interventions, and Modeling - San Diego, United States Duration: 17 Feb 2019 → 19 Feb 2019 |
Publication series
| Name | Proceedings of SPIE: Progress in biomedical optics and imaging |
|---|---|
| Publisher | SPIE |
| Volume | 10951 |
| ISSN (Print) | 1605-7422 |
Abstract
Pathologies of protective laryngeal reflexes such as the laryngeal adductor reflex (LAR) can increase the risk of aspiration pneumonia, a potentially life-threatening inflammation of the lungs caused by the intrusion of foreign particles into the lower airways. To estimate this risk, a standardized and non-invasive LAR screening method is highly desirable. In previous work, a commercially available high-speed laryngoscope has been equipped with a pressurized fluid system to shoot droplets onto the laryngeal structures for LAR stimulation and subsequent reflex latency evaluation. This Micro-droplet Impulse Testing of the LAR (MIT-LAR) lacks droplet impact site prediction for an unbiased and stimulation site-dependent reflex latency assessment. In this work, a two-phase algorithm leveraging stereoscopic image data for droplet impact site prediction and visualization of this prediction in the laryngoscopic image is proposed. A high-speed stereolaryngoscope requiring only a single camera was designed from scratch by combining two rod lens optics in one common shaft. This setup was used for stereoscopic high-speed image data acquisition of droplets shot at different muzzle energies and endoscope roll angles. Surface reconstruction of the target region is performed using a phantom of the human larynx. The point of intersection between the reconstructed surface and the droplet trajectory approximation recorded previously at known droplet formation parameters is calculated. The proposed approach allows stimulation site prediction for an enhanced MIT-LAR procedure. Quantitative evaluation of impact site prediction accuracy for different droplet muzzle energies and nozzle inclinations yields an average prediction error of 2.9 mm (n = 20).
Keywords
- Aspiration pneumonia, Computer-aided diagnosis, Dysphagia, High-speed imaging, Laryngoscope, Larynx, Larynx reflex testing, Surface reconstruction
ASJC Scopus subject areas
- Materials Science(all)
- Electronic, Optical and Magnetic Materials
- Materials Science(all)
- Biomaterials
- Physics and Astronomy(all)
- Atomic and Molecular Physics, and Optics
- Medicine(all)
- Radiology Nuclear Medicine and imaging
Cite this
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- Apa
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- BibTeX
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Medical Imaging 2019: Image-Guided Procedures, Robotic Interventions, and Modeling. ed. / Baowei Fei; Cristian A. Linte. SPIE, 2019. 109510M (Proceedings of SPIE: Progress in biomedical optics and imaging; Vol. 10951).
Research output: Chapter in book/report/conference proceeding › Conference contribution › Research › peer review
}
TY - GEN
T1 - Endoscopic guidance system for stimulation of the laryngeal adductor reflex by droplet impact
AU - Fast, Jacob Friedemann
AU - Rüppel, Adrian Karl
AU - Bärhold, Caroline
AU - Jungheim, Michael
AU - Ortmaier, Tobias
AU - Ptok, Martin
AU - Kahrs, Lüder Alexander
N1 - Funding information: This work has been funded by Deutsche Forschungsgemeinschaft (DFG) grants KA 2975/6-1 and PT 2/5-1 as well as the European Regional Development Fund (ERDF, project OPhonLas).
PY - 2019
Y1 - 2019
N2 - Pathologies of protective laryngeal reflexes such as the laryngeal adductor reflex (LAR) can increase the risk of aspiration pneumonia, a potentially life-threatening inflammation of the lungs caused by the intrusion of foreign particles into the lower airways. To estimate this risk, a standardized and non-invasive LAR screening method is highly desirable. In previous work, a commercially available high-speed laryngoscope has been equipped with a pressurized fluid system to shoot droplets onto the laryngeal structures for LAR stimulation and subsequent reflex latency evaluation. This Micro-droplet Impulse Testing of the LAR (MIT-LAR) lacks droplet impact site prediction for an unbiased and stimulation site-dependent reflex latency assessment. In this work, a two-phase algorithm leveraging stereoscopic image data for droplet impact site prediction and visualization of this prediction in the laryngoscopic image is proposed. A high-speed stereolaryngoscope requiring only a single camera was designed from scratch by combining two rod lens optics in one common shaft. This setup was used for stereoscopic high-speed image data acquisition of droplets shot at different muzzle energies and endoscope roll angles. Surface reconstruction of the target region is performed using a phantom of the human larynx. The point of intersection between the reconstructed surface and the droplet trajectory approximation recorded previously at known droplet formation parameters is calculated. The proposed approach allows stimulation site prediction for an enhanced MIT-LAR procedure. Quantitative evaluation of impact site prediction accuracy for different droplet muzzle energies and nozzle inclinations yields an average prediction error of 2.9 mm (n = 20).
AB - Pathologies of protective laryngeal reflexes such as the laryngeal adductor reflex (LAR) can increase the risk of aspiration pneumonia, a potentially life-threatening inflammation of the lungs caused by the intrusion of foreign particles into the lower airways. To estimate this risk, a standardized and non-invasive LAR screening method is highly desirable. In previous work, a commercially available high-speed laryngoscope has been equipped with a pressurized fluid system to shoot droplets onto the laryngeal structures for LAR stimulation and subsequent reflex latency evaluation. This Micro-droplet Impulse Testing of the LAR (MIT-LAR) lacks droplet impact site prediction for an unbiased and stimulation site-dependent reflex latency assessment. In this work, a two-phase algorithm leveraging stereoscopic image data for droplet impact site prediction and visualization of this prediction in the laryngoscopic image is proposed. A high-speed stereolaryngoscope requiring only a single camera was designed from scratch by combining two rod lens optics in one common shaft. This setup was used for stereoscopic high-speed image data acquisition of droplets shot at different muzzle energies and endoscope roll angles. Surface reconstruction of the target region is performed using a phantom of the human larynx. The point of intersection between the reconstructed surface and the droplet trajectory approximation recorded previously at known droplet formation parameters is calculated. The proposed approach allows stimulation site prediction for an enhanced MIT-LAR procedure. Quantitative evaluation of impact site prediction accuracy for different droplet muzzle energies and nozzle inclinations yields an average prediction error of 2.9 mm (n = 20).
KW - Aspiration pneumonia
KW - Computer-aided diagnosis
KW - Dysphagia
KW - High-speed imaging
KW - Laryngoscope
KW - Larynx
KW - Larynx reflex testing
KW - Surface reconstruction
UR - http://www.scopus.com/inward/record.url?scp=85068894455&partnerID=8YFLogxK
U2 - 10.1117/12.2512852
DO - 10.1117/12.2512852
M3 - Conference contribution
AN - SCOPUS:85068894455
T3 - Proceedings of SPIE: Progress in biomedical optics and imaging
BT - Medical Imaging 2019
A2 - Fei, Baowei
A2 - Linte, Cristian A.
PB - SPIE
T2 - Medical Imaging 2019: Image-Guided Procedures, Robotic Interventions, and Modeling
Y2 - 17 February 2019 through 19 February 2019
ER -