New Quantitative Analysis Method Using HyperEye Medical System Image for Coronary Artery Bypass Grafting
| Autor: | Takemi H, Takayuki Sato, Hideaki Nishimori, Kazumasa Orihashi, Masaki Yamamoto |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
medicine.medical_specialty
Bypass grafting business.industry Indocyanine green angiography General Medicine 030204 cardiovascular system & hematology Intensity (physics) Surgery Left internal thoracic artery 03 medical and health sciences chemistry.chemical_compound 0302 clinical medicine Qualitative analysis medicine.anatomical_structure chemistry 030220 oncology & carcinogenesis Medicine business Nuclear medicine Quantitative analysis (chemistry) Indocyanine green Artery |
| Zdroj: | Angiology: Open Access. |
| ISSN: | 2329-9495 |
| DOI: | 10.4172/2329-9495.1000194 |
| Popis: | 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 abnormal on CAG. There were significant differences between peak-I at the mid portion of the graft (221.47 ± 39.33 vs. 184.82 ± 40.15 gray scale) and time delay with max dI/dt (0.45 ± 1.28 vs. â1.00 ± 1.25 s), but there was no significant difference in the ratio of max dI/dt between patent and abnormal grafts. Conclusions: The spatiotemporal image method may become a model of the analysis software and the time interval of max dI/dt may become a predictor for future graft failure. |
| Databáze: | OpenAIRE |
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