In vivo liver function reserve assessments in alcoholic liver disease by scalable photoacoustic imaging

IF 7.1 1区医学 Q1 ENGINEERING, BIOMEDICAL Photoacoustics Pub Date : 2023-11-07 DOI:10.1016/j.pacs.2023.100569

Tong Sun , Jing Lv , Xingyang Zhao , Wenya Li , Zhenhui Zhang , Liming Nie

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Abstract

We present a rapid and high-resolution photoacoustic imaging method for evaluating the liver function reserve (LFR). To validate its accuracy, we establish alcoholic liver disease (ALD) models and employ dual-wavelength spectral unmixing to assess oxygen metabolism. An empirical mathematical model fits the photoacoustic signals, obtaining liver metabolism curve and LFR parameters. Liver oxygen metabolism significantly drops in ALD with the emergence of abnormal hepatic lobular structure. ICG half-life remarkably extends from 241 to 568 s in ALD. A significant decline in LFR occurs in terminal region compared to central region, indicated by a 106.9 s delay in ICG half-life, likely due to hepatic artery and vein damage causing hypoxia and inadequate nutrition. Reduced glutathione repairs LFR with a 43% improvement by reducing alcohol-induced oxidative damage. Scalable photoacoustic imaging shows immense potential for assessing LFR in alcoholic-related diseases, providing assistance to early detection and management of liver disease.

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可扩展光声成像评估酒精性肝病的体内肝功能储备

我们提出了一种快速、高分辨率的光声成像方法来评估肝功能储备(LFR)。为了验证其准确性，我们建立了酒精性肝病(ALD)模型，并采用双波长光谱分解来评估氧代谢。利用经验数学模型拟合光声信号，得到肝脏代谢曲线和LFR参数。ALD患者肝氧代谢显著下降，肝小叶结构出现异常。ALD的ICG半衰期从241 s显著延长至568 s。与中央区相比，终末区LFR明显下降，ICG半衰期延迟106.9 s，可能是由于肝动脉和静脉损伤导致缺氧和营养不足。还原型谷胱甘肽通过减少酒精引起的氧化损伤修复LFR，改善43%。可扩展的光声成像显示了在酒精相关疾病中评估LFR的巨大潜力，为肝脏疾病的早期发现和管理提供了帮助。

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来源期刊

Photoacoustics Physics and Astronomy-Atomic and Molecular Physics, and Optics

CiteScore

11.40

自引率

16.50%

发文量

审稿时长

53 days

期刊介绍： The open access Photoacoustics journal (PACS) aims to publish original research and review contributions in the field of photoacoustics-optoacoustics-thermoacoustics. This field utilizes acoustical and ultrasonic phenomena excited by electromagnetic radiation for the detection, visualization, and characterization of various materials and biological tissues, including living organisms. Recent advancements in laser technologies, ultrasound detection approaches, inverse theory, and fast reconstruction algorithms have greatly supported the rapid progress in this field. The unique contrast provided by molecular absorption in photoacoustic-optoacoustic-thermoacoustic methods has allowed for addressing unmet biological and medical needs such as pre-clinical research, clinical imaging of vasculature, tissue and disease physiology, drug efficacy, surgery guidance, and therapy monitoring. Applications of this field encompass a wide range of medical imaging and sensing applications, including cancer, vascular diseases, brain neurophysiology, ophthalmology, and diabetes. Moreover, photoacoustics-optoacoustics-thermoacoustics is a multidisciplinary field, with contributions from chemistry and nanotechnology, where novel materials such as biodegradable nanoparticles, organic dyes, targeted agents, theranostic probes, and genetically expressed markers are being actively developed. These advanced materials have significantly improved the signal-to-noise ratio and tissue contrast in photoacoustic methods.