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Rowland R, Ponticorvo A, Jarrin Lopez A, Li S, Li X, Ichii H, Durkin AJ. Monitoring kidney optical properties during cold storage preservation with spatial frequency domain imaging. J Biomed Opt 2019; 24:1-7. [PMID: 31777223 PMCID: PMC6882458 DOI: 10.1117/1.jbo.24.11.116003] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2019] [Accepted: 11/11/2019] [Indexed: 05/18/2023]
Abstract
Transplantation of kidneys results in delayed graft function in as many as 40% of cases. During the organ transplantation process, donor kidneys undergo a period of cold ischemic time (CIT), where the organ is preserved with a cold storage solution to maintain tissue viability. Some complications observed after grafting may be due to damage sustained to the kidney during CIT. However, the effects due to this damage are not apparent until well after transplant surgery has concluded. To this end, we have used spatial frequency domain imaging (SFDI) to measure spatially resolved optical properties of porcine kidneys over the course of 80-h CIT. During this time, we observed an increase in both reduced scattering (μ s& ' ) and absorption (μa) coefficients. The measured scattering b parameter increased until 24 h of CIT, then returned toward baseline during the remaining duration of the imaging sequence. These results show that the optical properties of kidney tissue change with increasing CIT and suggest that continued investigation into the application of SFDI to kidneys under CIT may lead to the development of a noninvasive method for assessing graft viability.
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Affiliation(s)
- Rebecca Rowland
- University of California, Irvine, Beckman Laser Institute and Medical Clinic, Irvine, California, United States
| | - Adrien Ponticorvo
- University of California, Irvine, Beckman Laser Institute and Medical Clinic, Irvine, California, United States
| | - Alberto Jarrin Lopez
- University of California, Irvine, Department of Surgery, UC Irvine Division of Transplantation, Orange, California, United States
| | - Shiri Li
- University of California, Irvine, Department of Surgery, UC Irvine Division of Transplantation, Orange, California, United States
| | - Xiaodong Li
- UC Irvine Health Douglas Hospital, Department of Pathology, Orange, California, United States
| | - Hirohito Ichii
- University of California, Irvine, Department of Surgery, UC Irvine Division of Transplantation, Orange, California, United States
| | - Anthony J. Durkin
- University of California, Irvine, Beckman Laser Institute and Medical Clinic, Irvine, California, United States
- University of California, Irvine, Department of Biomedical Engineering, Irvine, California, United States
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