Biomechanical properties of optic nerve and retrobulbar structures with 2D and 3D shear wave elastography in patients affected by glaucoma

This study consists of an elastosonography evaluation of both eyes of 40 glaucomatous patients and 40 healthy subjects. We used shear wave elastography with a one-dimensional-array probe to capture two-dimensional images in order to study the optic nerve near the papilla, chorioretinal complex, late...

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Bibliographic Details
Published in:Clinical imaging 2020-05, Vol.61, p.106-114
Main Authors: Guazzaroni, Manlio, Ferrari, Donatella, Lamacchia, Feliciana, Salimei, Fabio, Marsico, Salvatore, Citraro, Daniele, Campagnuolo, Tanio, Girardi, Valentina, Orlacchio, Antonio
Format: Article
Language:English
Subjects:
3D-probe
Adipose tissue
Arrays
Biomechanics
Diagnostic systems
Dimensional analysis
Disease
Elastic properties
Elastosonography
Eye (anatomy)
Glaucoma
Mathematical analysis
Mechanical properties
Medical imaging
Muscles
Optic nerve
Optics
Qualitative analysis
Rectus muscle
Shear wave
Statistical analysis
Statistical significance
Stiffness
Three dimensional analysis
Two dimensional analysis
Ultrasound
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Description
Summary:This study consists of an elastosonography evaluation of both eyes of 40 glaucomatous patients and 40 healthy subjects. We used shear wave elastography with a one-dimensional-array probe to capture two-dimensional images in order to study the optic nerve near the papilla, chorioretinal complex, lateral rectus muscle, and periorbital fat tissue. Furthermore, we used a two-dimensional array probe to capture three-dimensional images to study the optic nerve in toto with multilevel sampling. We obtained qualitative and quantitative data (“absolute” stiffness values). Then, we have investigated these tissue also measuring the “stiffness ratio” values. Statistically significant differences (p 
ISSN:0899-7071
1873-4499
DOI:10.1016/j.clinimag.2020.01.015