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Sunarso, Tsuchiya A, Fukuda N, Toita R, Tsuru K, Ishikawa K. Effect of micro-roughening of poly(ether ether ketone) on bone marrow derived stem cell and macrophage responses, and osseointegration. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2018; 29:1375-1388. [DOI: 10.1080/09205063.2018.1461448] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Affiliation(s)
- Sunarso
- Faculty of Dental Science, Department of Biomaterials, Kyushu University, Fukuoka, Japan
- Faculty of Dentistry, Department of Dental Materials Science and Technology, Padjadjaran Unversity, Sumedang, Indonesia
| | - Akira Tsuchiya
- Faculty of Dental Science, Department of Biomaterials, Kyushu University, Fukuoka, Japan
| | - Naoyuki Fukuda
- Faculty of Dental Science, Department of Biomaterials, Kyushu University, Fukuoka, Japan
| | - Riki Toita
- Faculty of Dental Science, Department of Biomaterials, Kyushu University, Fukuoka, Japan
- Biomedical Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Ikeda, Japan
| | - Kanji Tsuru
- Faculty of Dental Science, Department of Biomaterials, Kyushu University, Fukuoka, Japan
| | - Kunio Ishikawa
- Faculty of Dental Science, Department of Biomaterials, Kyushu University, Fukuoka, Japan
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Khaleghi M, Furlong C, Ravicz M, Cheng JT, Rosowski JJ. Three-dimensional vibrometry of the human eardrum with stroboscopic lensless digital holography. JOURNAL OF BIOMEDICAL OPTICS 2015; 20:051028. [PMID: 25652791 PMCID: PMC4408086 DOI: 10.1117/1.jbo.20.5.051028] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2014] [Accepted: 12/31/2014] [Indexed: 05/04/2023]
Abstract
The eardrum or tympanic membrane (TM) transforms acoustic energy at the ear canal into mechanical motions of the ossicles. The acousto-mechanical transformer behavior of the TM is determined by its shape, three-dimensional (3-D) motion, and mechanical properties. We have developed an optoelectronic holographic system to measure the shape and 3-D sound-induced displacements of the TM. The shape of the TM is measured with dual-wavelength holographic contouring using a tunable near IR laser source with a central wavelength of 780 nm. 3-D components of sound-induced displacements of the TM are measured with the method of multiple sensitivity vectors using stroboscopic holographic interferometry. To accurately obtain sensitivity vectors, a new technique is developed and used in which the sensitivity vectors are obtained from the images of a specular sphere that is being illuminated from different directions. Shape and 3-D acoustically induced displacement components of cadaveric human TMs at several excitation frequencies are measured at more than one million points on its surface. A numerical rotation matrix is used to rotate the original Euclidean coordinate of the measuring system in order to obtain in-plane and out-of-plane motion components. Results show that in-plane components of motion are much smaller (<20%) than the out-of-plane motions’ components.
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Affiliation(s)
- Morteza Khaleghi
- Worcester Polytechnic Institute, Department of Mechanical Engineering, Center for Holographic Studies and Laser Micro-mechatronics, Worcester, Massachusetts 01609, United States
- Address all correspondence to: Morteza Khaleghi, E-mail:
| | - Cosme Furlong
- Worcester Polytechnic Institute, Department of Mechanical Engineering, Center for Holographic Studies and Laser Micro-mechatronics, Worcester, Massachusetts 01609, United States
- Eaton-Peabody Laboratory, Massachusetts Eye and Ear Infirmary, Boston, Massachusetts 02114, United States
- Harvard Medical School, Department of Otology and Laryngology, Boston, Massachusetts 02114, United States
| | - Mike Ravicz
- Eaton-Peabody Laboratory, Massachusetts Eye and Ear Infirmary, Boston, Massachusetts 02114, United States
- Harvard Medical School, Department of Otology and Laryngology, Boston, Massachusetts 02114, United States
| | - Jeffrey Tao Cheng
- Eaton-Peabody Laboratory, Massachusetts Eye and Ear Infirmary, Boston, Massachusetts 02114, United States
- Harvard Medical School, Department of Otology and Laryngology, Boston, Massachusetts 02114, United States
| | - John J. Rosowski
- Eaton-Peabody Laboratory, Massachusetts Eye and Ear Infirmary, Boston, Massachusetts 02114, United States
- Harvard Medical School, Department of Otology and Laryngology, Boston, Massachusetts 02114, United States
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Khaleghi M, Guignard J, Furlong C, Rosowski JJ. Simultaneous full-field 3-D vibrometry of the human eardrum using spatial-bandwidth multiplexed holography. JOURNAL OF BIOMEDICAL OPTICS 2015; 20:111202. [PMID: 25984986 PMCID: PMC4572098 DOI: 10.1117/1.jbo.20.11.111202] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2015] [Accepted: 03/19/2015] [Indexed: 05/25/2023]
Abstract
Holographic interferometric methods typically require the use of three sensitivity vectors in order to obtain three-dimensional (3-D) information. Methods based on multiple directions of illumination have limited applications when studying biological tissues that have temporally varying responses such as the tympanic membrane (TM). Therefore, to measure 3-D displacements in such applications, the measurements along all the sensitivity vectors have to be done simultaneously. We propose a multiple-illumination directions approach to measure 3-D displacements from a single-shot hologram that contains displacement information from three sensitivity vectors. The hologram of an object of interest is simultaneously recorded with three incoherently superimposed pairs of reference and object beams. The incident off-axis angles of the reference beams are adjusted such that the frequency components of the multiplexed hologram are completely separate. Because of the differences in the directions and wavelengths of the reference beams, the positions of each reconstructed image corresponding to each sensitivity vector are different. We implemented a registration algorithm to accurately translate individual components of the hologram into a single global coordinate system to calculate 3-D displacements. The results include magnitudes and phases of 3-D sound-induced motions of a human cadaveric TM at several excitation frequencies showing modal and traveling wave motions on its surface.
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Affiliation(s)
- Morteza Khaleghi
- Worcester Polytechnic Institute, Center for Holographic Studies and Laser micro-mechaTronics (CHSLT), Mechanical Engineering Department, Worcester, Massachusetts 01609, United States
| | - Jérémie Guignard
- Massachusetts Eye and Ear Infirmary, Eaton-Peabody Laboratory, Boston, Massachusetts 02114, United States
- Harvard Medical School, Department of Otology and Laryngology, Boston, Massachusetts 02114, United States
| | - Cosme Furlong
- Worcester Polytechnic Institute, Center for Holographic Studies and Laser micro-mechaTronics (CHSLT), Mechanical Engineering Department, Worcester, Massachusetts 01609, United States
- Massachusetts Eye and Ear Infirmary, Eaton-Peabody Laboratory, Boston, Massachusetts 02114, United States
- Harvard Medical School, Department of Otology and Laryngology, Boston, Massachusetts 02114, United States
| | - John J. Rosowski
- Massachusetts Eye and Ear Infirmary, Eaton-Peabody Laboratory, Boston, Massachusetts 02114, United States
- Harvard Medical School, Department of Otology and Laryngology, Boston, Massachusetts 02114, United States
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