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New device for intraoperative graft assessment: HyperEye charge-coupled device camera system
Takemi Handa1, Rajesh G Katare, Hideaki Nishimori
1Department of Surgery 2, Kochi Medical School, Nankoku, Kochi, 783-8505, Japan. takemi@mpd.biglobe.ne.jp
General Thoracic and Cardiovascular Surgery
|February 16, 2010
Summary
The HyperEye system, a novel camera for intraoperative angiography, effectively assesses graft patency and identifies failures. This technology offers a valuable tool for surgeons during operations.
Area of Science:
- Medical Imaging
- Surgical Technology
- Cardiovascular Surgery
Background:
- Intraoperative graft assessment is crucial for surgical success.
- Current methods may have limitations in detecting all types of graft failures.
- Indocyanine green (ICG) angiography is a valuable technique for visualizing blood flow.
Purpose of the Study:
- To evaluate the efficacy of the new HyperEye system for intraoperative graft assessment.
- To compare the HyperEye system with traditional transit-time flowmetry (TFM).
- To demonstrate the ability of the HyperEye system to detect structural and functional graft failures.
Main Methods:
- Developed a novel color charge-coupled device (CCD) camera system (HyperEye) with custom optical filters and an ultra-high-sensitive CCD image sensor.
- The HyperEye system detects both color and near-infrared (NIR) rays (380-1200 nm).
- Investigated intraoperative graft patency in 51 patients using the HyperEye system and TFM with ICG dye.
Main Results:
- Analyzed 189 anastomoses across 153 grafts.
- HyperEye and TFM agreed on graft patency in 129 cases and abnormality in 7 cases.
- HyperEye identified subtle failures missed by TFM, including suspected nonoccluded graft failure and patent perfusion.
Conclusions:
- The HyperEye system effectively visualizes structural and functional graft failures.
- This advanced imaging technology shows promise as a valuable tool for intraoperative graft assessment.
- The HyperEye system enhances surgical decision-making by providing detailed graft status information.
