Qiang Chen

Dec 16, 2024 | mdpi.com | Qiang Chen

2.2. Ground Deformation of the Xiongba Landslide Extracted by InSAR Time-Series AnalysisIn this study, 59 ascending track and 68 descending track radar images (coverage and detailed parameters can be found in a and ) captured by the Sentinel-1 satellite were collected to map the deformation fields of the Xiongba landslide. The Precise Orbit Ephemerides (POD) data provided by the European Space Agency (ESA) were employed to refine satellite orbit vectors.

Nov 22, 2024 | arxiv.org | Yu Wang |Yanpeng Sun |Qiang Chen |Jiangjiang Liu

Jul 30, 2024 | pubs.rsc.org | Pei Liang |Yuhao Xie |Zilong Wang |Qiang Chen |Heshan Tang

Enhancing Substance Identification in Raman Spectroscopy Using Deep Neural Convolutional Networks with Attention Mechanism Raman spectroscopy is widely used for substance identification, providing molecular information from various components alongside noise and instrument interference. Consequently, identifying components based on Raman spectra remains challenging.

Jun 21, 2024 | nature.com | Lexin Ge |Mingchao Li |Wen Fan |Lin Jiang |Songtao Yuan |Qiang Chen | +1 more

To improve the understanding of potential pathological mechanisms of macular edema (ME), we try to discover biomarker candidates related to ME caused by diabetic retinopathy (DR) and retinal vein occlusion (RVO) in spectral-domain optical coherence tomography images by means of deep learning (DL). 32 eyes of 26 subjects with non-proliferative DR (NPDR), 77 eyes of 61 subjects with proliferative DR (PDR), 120 eyes of 116 subjects with branch RVO (BRVO), and 17 eyes of 15 subjects with central RVO (CRVO) were collected. A DL model was implemented to guide biomarker candidate discovery. The disorganization of the retinal outer layers (DROL), i.e., the gray value of the retinal tissues between the external limiting membrane (ELM) and retinal pigment epithelium (RPE), the disrupted and obscured rate of the ELM, ellipsoid zone (EZ), and RPE, was measured. In addition, the occurrence, number, volume, and projected area of hyperreflective foci (HRF) were recorded. ELM, EZ, and RPE are more likely to be obscured in RVO group and HRFs are observed more frequently in DR group (all P ≤ 0.001). In conclusion, the features of DROL and HRF can be possible biomarkers related to ME caused by DR and RVO in OCT modality.

Mar 2, 2024 | onlinelibrary.wiley.com | Hao Zhao |Yu Wang |Qiang Chen |Ying Liu

1 Introduction Photoacoustic imaging (PAI) guided photothermal therapy (PTT), in which theranostic agents produce acoustic pressure waves and localized heat upon photoexcitation, has emerged as a promising theranostic platform for cancer treatments with high therapeutic efficiency and low toxicity.[1-4] In particular, theranostic agents with absorption in the second near-infrared window (NIR-II, 1000–1700 nm) have attracted increasing attention to achieve deeper tissue penetration while...