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A Method for Accurate Reconstructions of the Upper Airway Using Magnetic Resonance Images.

Xiong H, Huang X, Li Y, Li J, Xian J, Huang Y - PLoS ONE (2015)

Bottom Line: Finally, the three-dimensional (3D) NURBS (Non-Uniform Rational B-Splines) surface of the UA was constructed using the registered boundaries in all three different planes.A smooth 3D structure of the UA was constructed, which captured the anatomical features from the three anatomical planes, particularly the location of the anterior wall of the nasopharynx.The volume and area of every cross section of the UA can be calculated from the constructed 3D model of UA.

View Article: PubMed Central - PubMed

Affiliation: School of Biomedical Engineering, Capital Medical University, Beijing, China; Beijing Key Laboratory of Fundamental Research on Biomechanics in Clinical Application, Capital Medical University, Beijing, China.

ABSTRACT

Objective: The purpose of this study is to provide an optimized method to reconstruct the structure of the upper airway (UA) based on magnetic resonance imaging (MRI) that can faithfully show the anatomical structure with a smooth surface without artificial modifications.

Methods: MRI was performed on the head and neck of a healthy young male participant in the axial, coronal and sagittal planes to acquire images of the UA. The level set method was used to segment the boundary of the UA. The boundaries in the three scanning planes were registered according to the positions of crossing points and anatomical characteristics using a Matlab program. Finally, the three-dimensional (3D) NURBS (Non-Uniform Rational B-Splines) surface of the UA was constructed using the registered boundaries in all three different planes.

Results: A smooth 3D structure of the UA was constructed, which captured the anatomical features from the three anatomical planes, particularly the location of the anterior wall of the nasopharynx. The volume and area of every cross section of the UA can be calculated from the constructed 3D model of UA.

Conclusions: A complete scheme of reconstruction of the UA was proposed, which can be used to measure and evaluate the 3D upper airway accurately.

No MeSH data available.


The axial boundaries from the nasal cavity to the oropharynx.The distance between the neighboring curves is 3 mm.
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pone.0130186.g003: The axial boundaries from the nasal cavity to the oropharynx.The distance between the neighboring curves is 3 mm.

Mentions: For each slice, the coordinates of the boundary points obtained using the level set method were output to a text file. Fig 2 displays the boundaries of the nasal cavity in the coronal section from the vestibular region to the nasopharynx. In the same way, the axial boundaries of the UA were obtained and are shown in Fig 3. The sagittal boundaries of the UA serve to calibrate the reconstructed structure for both the nasal cavity and the oropharynx.


A Method for Accurate Reconstructions of the Upper Airway Using Magnetic Resonance Images.

Xiong H, Huang X, Li Y, Li J, Xian J, Huang Y - PLoS ONE (2015)

The axial boundaries from the nasal cavity to the oropharynx.The distance between the neighboring curves is 3 mm.
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4465749&req=5

pone.0130186.g003: The axial boundaries from the nasal cavity to the oropharynx.The distance between the neighboring curves is 3 mm.
Mentions: For each slice, the coordinates of the boundary points obtained using the level set method were output to a text file. Fig 2 displays the boundaries of the nasal cavity in the coronal section from the vestibular region to the nasopharynx. In the same way, the axial boundaries of the UA were obtained and are shown in Fig 3. The sagittal boundaries of the UA serve to calibrate the reconstructed structure for both the nasal cavity and the oropharynx.

Bottom Line: Finally, the three-dimensional (3D) NURBS (Non-Uniform Rational B-Splines) surface of the UA was constructed using the registered boundaries in all three different planes.A smooth 3D structure of the UA was constructed, which captured the anatomical features from the three anatomical planes, particularly the location of the anterior wall of the nasopharynx.The volume and area of every cross section of the UA can be calculated from the constructed 3D model of UA.

View Article: PubMed Central - PubMed

Affiliation: School of Biomedical Engineering, Capital Medical University, Beijing, China; Beijing Key Laboratory of Fundamental Research on Biomechanics in Clinical Application, Capital Medical University, Beijing, China.

ABSTRACT

Objective: The purpose of this study is to provide an optimized method to reconstruct the structure of the upper airway (UA) based on magnetic resonance imaging (MRI) that can faithfully show the anatomical structure with a smooth surface without artificial modifications.

Methods: MRI was performed on the head and neck of a healthy young male participant in the axial, coronal and sagittal planes to acquire images of the UA. The level set method was used to segment the boundary of the UA. The boundaries in the three scanning planes were registered according to the positions of crossing points and anatomical characteristics using a Matlab program. Finally, the three-dimensional (3D) NURBS (Non-Uniform Rational B-Splines) surface of the UA was constructed using the registered boundaries in all three different planes.

Results: A smooth 3D structure of the UA was constructed, which captured the anatomical features from the three anatomical planes, particularly the location of the anterior wall of the nasopharynx. The volume and area of every cross section of the UA can be calculated from the constructed 3D model of UA.

Conclusions: A complete scheme of reconstruction of the UA was proposed, which can be used to measure and evaluate the 3D upper airway accurately.

No MeSH data available.