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Evaluation of Tracheal Stenosis in Rabbits Using Multispectral Optoacoustic Tomography. 2022

Yanting Wen, and Dan Wu, and Jing Zhang, and Shixie Jiang, and Chunyan Xiong, and Dan Guo, and Zihui Chi, and Yi Chen, and Lun Li, and Ying Yang, and Ting Liu, and Huabei Jiang
School of Computer Science and Technology, Chongqing University of Posts and Telecommunications, Chongqing, China.

Objective: Photoacoustic tomography (PAT) and multispectral optoacoustic tomography (MSOT) are evolving technologies that are capable of delivering real-time, high-resolution images of tissues. The purpose of this study was to evaluate the feasibility of using PAT and MSOT for detecting histology in a rabbit tracheal stenosis model.
 Method: A total of 12 rabbits (9 stenosis and three control) were randomly divided into four groups (A, B, C and D). Each group consisted of three rabbits, which were staged at the first, fourth, and eighth weeks of stenosis progression, respectively. PAT/MSOT images and corresponding histology from these experimental animals were compared, for analyzing the morphologic features and quantitative tracheal measurements in different tracheal stenosis stage. Result: Both the PAT images and corresponding histology indicated the most severe degree of stenosis in group C. MSOT images indicated notable differences in tracheal contents of group B and D. Conclusion: This study suggests that PAT/MSOT are potentially valuable non-invasive modality which are capable of evaluating tracheal structure and function in vivo.

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