Yonsei University, Department of Biomedical Engineering, Wonju-Si, Republic of Korea.
J Biomed Opt. 2023 Sep;28(9):096001. doi: 10.1117/1.JBO.28.9.096001. Epub 2023 Sep 4.
Laser speckle contrast images (LSCIs) have been utilized to monitor blood flow perfusion. However, they have conventionally been observed on monitor screens, resulting in potential spatial mismatching between the imaging region of interest (IROI) and monitor screen.
This study proposes a projection mapping (PM) system for LSCIs (PMS_LSCI) that projects LSCIs to directly observe the blood flow perfusion in the IROI.
The PMS_LSCI consists of a camera, imaging optics, a laser projector, and graphic user interface software. The spatial matching in the regions of interest was performed by adjusting the software screen of the LSCI in the IROI and evaluated by conducting and studies. An additional study was performed to investigate the feasibility of real-time PM of the LSCI.
The spatial mismatching in the regions of interest was ranged from 2.74% to 6.47% depending on the surface curvature. The PMS_LSCI could enable real-time PM of LSCI at four different blood flow states depending on blood pressure.
The PMS_LSCI projects the LSCI in the IROI by interacting with a projector instead of the monitor screen. The PMS_LSCI presented clinical feasibility in the and studies.
激光散斑对比图像（LSCIs）已被用于监测血流灌注。然而，它们通常在监视器屏幕上观察，导致感兴趣的成像区域（IROI）和监视器屏幕之间存在潜在的空间不匹配。
本研究提出了一种用于 LSCIs 的投影映射（PMS_LSCI）系统，该系统可将 LSCIs 投影到 IROI 上，直接观察血流灌注情况。
PMS_LSCI 由相机、成像光学元件、激光投影仪和图形用户界面软件组成。通过调整 IROI 中 LSCI 的软件屏幕来实现感兴趣区域的空间匹配，并通过进行 和 研究进行评估。还进行了一项额外的 研究，以调查 LSCI 实时 PM 的可行性。
根据表面曲率，感兴趣区域的空间不匹配范围为 2.74%至 6.47%。PMS_LSCI 可以根据血压在四个不同的血流状态下实时 PM LSCI。
PMS_LSCI 通过与投影仪交互而不是监视器屏幕来在 IROI 中投影 LSCI。PMS_LSCI 在 和 研究中表现出了临床可行性。
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