Application of Photoplethysmography Combined with Deep Learning in Postoperative Monitoring of Flaps
10.12455/j.issn.1671-7104.230624
- VernacularTitle:光电容积描记术和深度学习相结合在皮瓣术后监测中的应用
- Author:
Jing YANG
1
;
Xinlei YANG
;
Yuwei GAO
;
Chunlei ZHANG
;
Di WANG
;
Tao SONG
Author Information
1. 哈尔滨医科大学口腔医学院,哈尔滨市,150000
- Keywords:
photoplethysmography;
deep learning;
flap
- From:
Chinese Journal of Medical Instrumentation
2024;48(4):419-425
- CountryChina
- Language:Chinese
-
Abstract:
Objective Photoelectric volumetric tracing(PPG)exhibits high sensitivity and specificity in flap monitoring.Deep learning(DL)is capable of automatically and robustly extracting features from raw data.In this study,we propose combining PPG with 1D convolutional neural networks(1D-CNN)to preliminarily explore the method's ability to distinguish the degree of embolism and to localize the embolic site in skin flap arteries.Methods Data were collected under normal conditions and various embolic scenarios by creating vascular emboli in a dermatome artery model and a rabbit dermatome model.These datasets were then trained,validated,and tested using 1D-CNN.Results As the degree of arterial embolization increased,the PPG amplitude upstream of the embolization site progressively increased,while the downstream amplitude progressively decreased,and the gap between the upstream and downstream amplitudes at the embolization site progressively widened.1D-CNN was evaluated in the skin flap arterial model and rabbit skin flap model,achieving average accuracies of 98.36%and 95.90%,respectively.Conclusion The combined monitoring approach of DL and PPG can effectively identify the degree of embolism and locate the embolic site within the skin flap artery.
