A sparse deep learning approach for automatic segmentation of human vasculature in multispectral optoacoustic tomography.

A sparse deep learning approach for automatic segmentation of human vasculature in multispectral optoacoustic tomography.
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DOI:
10.1016/j.pacs.2020.100203
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发表时间:
2020-12
期刊:
影响因子:
7.9
通讯作者:
Marr C
Marr C
中科院分区:
工程技术1区
文献类型:
--
作者:
Chlis NK;Karlas A;Fasoula NA;Kallmayer M;Eckstein HH;Theis FJ;Ntziachristos V;Marr C

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Multispectral Optoacoustic Tomography (MSOT) resolves oxy- (HbO2) and deoxy-hemoglobin (Hb) to perform vascular imaging. MSOT suffers from gradual signal attenuation with depth due to light-tissue interactions: an effect that hinders the precise manual segmentation of vessels. Furthermore, vascular assessment requires functional tests, which last several minutes and result in recording thousands of images. Here, we introduce a deep learning approach with a sparse-UNET (S-UNET) for automatic vascular segmentation in MSOT images to avoid the rigorous and time-consuming manual segmentation. We evaluated the S-UNET on a test-set of 33 images, achieving a median DICE score of 0.88. Apart from high segmentation performance, our method based its decision on two wavelengths with physical meaning for the task-at-hand: 850 nm (peak absorption of oxy-hemoglobin) and 810 nm (isosbestic point of oxy-and deoxy-hemoglobin). Thus, our approach achieves precise data-driven vascular segmentation for automated vascular assessment and may boost MSOT further towards its clinical translation.
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