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General Thoracic and Cardiovascular Surgery

, Volume 58, Issue 2, pp 68–77 | Cite as

New device for intraoperative graft assessment: HyperEye charge-coupled device camera system

  • Takemi HandaEmail author
  • Rajesh G. Katare
  • Hideaki Nishimori
  • Seiichiro Wariishi
  • Takashi Fukutomi
  • Masaki Yamamoto
  • Shiro Sasaguri
  • Takayuki Sato
Original Article

Abstract

Purpose

Our institution developed a new color chargecoupled device (CCD) camera system (HyperEye system) for intraoperative indocyanine green (ICG) angiography. The device consists of a combination of custommade optical filters and an ultra-high-sensitive CCD image sensor with non-Bayer color filter array (i.e., HyperEye technology), which can detect simultaneously color and near-infrared (NIR) rays from 380 to1200 nm. Here, we demonstrate intraoperative graft assessment using the HyperEye system.

Methods

We investigated the intraoperative graft patency using both the HyperEye system and transittime flowmetry (TFM) in 51 patients between April 2007 and April 2009 while ICG dye was injected through a central venous catheter. Each patient signed a consent form before the surgery.

Results

We obtained intraoperative graft flows and images in 189 anastomoses of 153 grafts. Both the HyperEye system and TFM indicated the patency of the grafts in 129 grafts. Both the HyperEye system and TFM detected the abnormality of the graft in seven grafts. For the competitive flows, the HyperEye system captured to-and-fro flow fluorescence and TFM detected the retrograde waveform in 16 grafts. On the other hand, although TFM indicated the patency of the graft, the HyperEye system suspected nonoccluded graft failure in seven grafts. In contrast, although TFM detected a mean flow of <10 ml/min, the HyperEye system captured the patent perfusion fluorescence in four grafts.

Conclusion

The HyperEye system can visualize any structural and functional failures. Our findings suggest that this device could become a useful tool for intraoperative graft assessment.

Key words

Indocyanine green angiography Coronary artery bypass graft Intraoperative graft assessment New device 

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Copyright information

© The Japanese Association for Thoracic Surgery 2010

Authors and Affiliations

  • Takemi Handa
    • 1
    • 2
    Email author
  • Rajesh G. Katare
    • 2
  • Hideaki Nishimori
    • 1
  • Seiichiro Wariishi
    • 1
  • Takashi Fukutomi
    • 1
  • Masaki Yamamoto
    • 1
  • Shiro Sasaguri
    • 1
  • Takayuki Sato
    • 2
  1. 1.Department of Surgery 2Kochi Medical SchoolNankoku, KochiJapan
  2. 2.Department of Cardiovascular ControlKochi Medical SchoolNankokuJapan

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