Angiology: Open Access
Open Access

Masaki Yamamoto

Publications

• Research Article
  New Quantitative Analysis Method Using HyperEye Medical System Image for Coronary Artery Bypass Grafting
  Author(s): Takemi Handa, Kazumasa Orihashi, Hideaki Nishimori, Masaki Yamamoto and Takayuki Sato Takemi Handa, Kazumasa Orihashi, Hideaki Nishimori, Masaki Yamamoto and Takayuki Sato
  
  Purpose: The current evaluation by indocyanine green angiography in coronary artery bypass patients has been performed by qualitative analysis. We devised an original quantitative analysis method using Image J. Methods: Indocyanine green angiography movie was converted to spatiotemporal images. Using the spatiotemporal image, an indocyanine green fluorescence intensity curve was drawn and converted to a firstderivative (acceleration) curve. Indocyanine green angiography evaluations were classified into four types. We collected the peak indocyanine green fluorescence intensity value (peak-I) and both time interval and ratio of maximum indocyanine green acceleration value (max dI/dt) between the mid and distal portions of the graft. Results: In 61 left internal thoracic artery grafts, 49 were patent and 12 were abnor.. View More»
  DOI: 10.4172/2329-9495.1000194

  Abstract PDF

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