Measurement of corneal elasticity with an acoustic radiation force elasticity microscope.
Measurement of corneal elasticity with an acoustic radiation force elasticity microscope.
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DOI:
10.1016/j.ultrasmedbio.2013.11.009
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发表时间:
2014-07
影响因子:
2.9
通讯作者:
Juhasz T
中科院分区:
文献类型:
--
作者:
Mikula E;Hollman K;Chai D;Jester JV;Juhasz T
To investigate the role of collagen structure in corneal biomechanics, measurement of localized corneal elasticity with minimal destruction to the tissue is necessary. We adopted the recently developed acoustic radiation force elastic microscopy (ARFEM) technique to measure localize biomechanical properties of the human cornea. In ARFEM, a low-frequency, high-intensity acoustic force is used to displace a femtosecond laser-generated microbubble, while high-frequency, low-intensity ultrasound is used to monitor the position of the microbubble within the cornea. Two ex vivo human corneas from a single donor were dehydrated to physiologic thickness, embedded in gelatin and then evaluated using the ARFEM technique. In the direction perpendicular to the corneal surface, ARFEM measurements provided elasticity values of E = 1.39 ± 0.28 kPa for the central anterior cornea and E = 0.71 ± 0.21 kPa for the central posterior cornea in pilot studies. The increased value of corneal elasticity in the anterior cornea correlates with the higher density of interweaving lamellae in this region.
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影响因子:
2.9
作者:
Erpelding, Todd N.;Hollman, Kyle W.;O'Donnell, Matthew
通讯作者:
O'Donnell, Matthew
影响因子:
2.4
作者:
Last, Julie A.;Thomasy, Sara M.;Croasdale, Christopher R.;Russell, Paul;Murphy, Christopher J.
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Murphy, Christopher J.
影响因子:
3.4
作者:
NYQUIST, GW
通讯作者:
NYQUIST, GW
影响因子:
2.8
作者:
Radner, W;Zehetmayer, M;Mallinger, R
通讯作者:
Mallinger, R
影响因子:
2.4
作者:
Hjortdal, JO
通讯作者:
Hjortdal, JO