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Long R, King T, Akl T, Ericson MN, Wilson M, Coté GL, McShane MJ. Optofluidic phantom mimicking optical properties of porcine livers. BIOMEDICAL OPTICS EXPRESS 2011; 2:1877-92. [PMID: 21750766 PMCID: PMC3130575 DOI: 10.1364/boe.2.001877] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/10/2011] [Revised: 06/03/2011] [Accepted: 06/04/2011] [Indexed: 05/19/2023]
Abstract
One strategy for assessing efficacy of a liver transplant is to monitor perfusion and oxygenation after transplantation. An implantable optical sensor is being developed to overcome inadequacies of current monitoring approaches. To facilitate sensor design while minimizing animal use, a polydimethylsiloxane (PDMS)-based liver phantom was developed to mimic the optical properties of porcine liver in the 630-1000 nm wavelength range and the anatomical geometry of liver parenchyma. Using soft lithography to construct microfluidic channels in pigmented elastomer enabled the 2D approximation of hexagonal liver lobules with 15mm sinusoidal channels, which will allow perfusion with blood-mimicking fluids to facilitate the development of the liver perfusion and oxygenation monitoring system.
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Affiliation(s)
- Ruiqi Long
- Department of Biomedical Engineering, Texas A&M University, 337 Zachry Engineering Center, 3120 TAMU, College Station, TX 77843-3120, USA
| | - Travis King
- Department of Biomedical Engineering, Texas A&M University, 337 Zachry Engineering Center, 3120 TAMU, College Station, TX 77843-3120, USA
| | - Tony Akl
- Department of Biomedical Engineering, Texas A&M University, 337 Zachry Engineering Center, 3120 TAMU, College Station, TX 77843-3120, USA
| | | | - Mark Wilson
- Department of Surgery, University of Pittsburgh, Pittsburgh, PA 15213, USA
- Pittsburgh VA Healthcare System, Pittsburgh, PA 15240, USA
| | - Gerard L. Coté
- Department of Biomedical Engineering, Texas A&M University, 337 Zachry Engineering Center, 3120 TAMU, College Station, TX 77843-3120, USA
| | - Michael J. McShane
- Department of Biomedical Engineering, Texas A&M University, 337 Zachry Engineering Center, 3120 TAMU, College Station, TX 77843-3120, USA
- Materials Science and Engineering Program, Texas A&M University, College Station, TX 77843, USA
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