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Surgery Today
Published in: Surgery Today 2/2017

01-02-2017 | Original Article

Quantitative assessment technique of HyperEye medical system angiography for coronary artery bypass grafting

Authors: Masaki Yamamoto, Hideaki Nishimori, Takemi Handa, Takashi Fukutomi, Kazuki Kihara, Miwa Tashiro, Takayuki Sato, Kazumasa Orihashi

Published in: Surgery Today | Issue 2/2017

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Abstract

Purpose

The HyperEye Medical System (HEMS) uses indocyanine green (ICG) to visualize blood vessels in coronary artery bypass grafting (CABG). We performed quantitative HEMS assessment to detect grafts at risk of occlusion.

Methods

We assessed the HEMS angiograms of 177 grafts from 69 patients who underwent CABG and compared the results with those of fluoroscopic coronary angiography, by measuring the increasing rate of ICG intensity, average acceleration value, and time to peak luminance intensity.

Results

Grafts in the patent and failed groups showed significant differences in their increasing rate of intensity and average acceleration value. The average accelerations value of ICG intensity of internal thoracic artery (ITA) and saphenous vein (SV) grafts were 112.3 and 144.9 intensity/s2 in the patent group, and 71.0 and 91.8 intensity/s2 in the failed group. The time to peak luminance intensity was 1.7 and 1.4 s in the patent group and 2.3 and 1.9 s in the failed group; these values were not significantly different.

Conclusion

Significant reductions in the ICG intensity rate and average acceleration value can occur in failed grafts. Therefore, quantifiable changes in ICG intensity may help detect minute changes in blood flow.
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Metadata
Title
Quantitative assessment technique of HyperEye medical system angiography for coronary artery bypass grafting
Authors
Masaki Yamamoto
Hideaki Nishimori
Takemi Handa
Takashi Fukutomi
Kazuki Kihara
Miwa Tashiro
Takayuki Sato
Kazumasa Orihashi
Publication date
01-02-2017
Publisher
Springer Japan
Published in
Surgery Today / Issue 2/2017
Print ISSN: 0941-1291
Electronic ISSN: 1436-2813
DOI
https://doi.org/10.1007/s00595-016-1369-6

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