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J Biomed Opt. 2016 Oct 1;21(10):106006. doi: 10.1117/1.JBO.21.10.106006.

Multispectral imaging of organ viability during uterine transplantation surgery in rabbits and sheep.

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Imperial College London, Institute of Global Health Innovation, Hamlyn Centre for Robotic Surgery, London SW7 2AZ, United KingdombImperial College London, Division of Surgery, Department of Surgery and Cancer, London SW7 2AZ, United Kingdom.
Imperial College London, Hammersmith Hospital Campus, Department of Surgery and Cancer, Institute of Reproductive and Developmental Biology, London W12 0NN, United Kingdom.
University College London, Department of Computer Science, Centre for Medical Image Computing, London WC1E 6BT, United Kingdom.
Leighton Hospital, Mid Cheshire Hospitals NHS Foundation Trust, Department of Surgery, Crewe CW1 4QJ, United Kingdom.
Royal Veterinary College, Biological Services Unit, London NW1 0TU, United Kingdom.
The Lister Hospital, London SW1W 8RH, United Kingdom.
Imperial College London, Hammersmith Hospital Campus, Queen Charlotte's Hospital, West London Gynaecological Cancer Centre, London W12 0NN, United Kingdom.


Uterine transplantation surgery (UTx) has been proposed as a treatment for permanent absolute uterine factor infertility (AUFI) in the case of the congenital absence or surgical removal of the uterus. Successful surgical attachment of the organ and its associated vasculature is essential for the organ’s reperfusion and long-term viability. Spectral imaging techniques have demonstrated the potential for the measurement of hemodynamics in medical applications. These involve the measurement of reflectance spectra by acquiring images of the tissue in different wavebands. Measures of tissue constituents at each pixel can then be extracted from these spectra through modeling of the light–tissue interaction. A multispectral imaging (MSI) laparoscope was used in sheep and rabbit UTx models to study short- and long-term changes in oxygen saturation following surgery. The whole organ was imaged in the donor and recipient animals in parallel with point measurements from a pulse oximeter. Imaging results confirmed the re-establishment of adequate perfusion in the transplanted organ after surgery. Cornual oxygenation trends measured with MSI are consistent with pulse oximeter readings, showing decreased StO2 immediately after anastomosis of the blood vessels. Long-term results show recovery of StO2 to preoperative levels.

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