Xiao Zhang, Haozhe Zhong, Sainan Wang, Bin He, Liangqi Cao, Ming Li, Miaowen Jiang, Qin Li
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引用次数: 0
摘要
为了消除运动伪影,提高三维光学相干断层成像(OCT)图像质量,人们提出了许多基于硬件和软件的策略。然而,基于硬件的策略必须使用额外的硬件来记录运动补偿信息。许多基于软件的策略需要额外的扫描来进行运动校正,代价是需要更长的采集时间。为了解决这个问题,我们提出了一种运动伪影校正和运动估计方法,用于前段的 OCT 容积成像,无需额外的硬件和冗余扫描。实验证明,该方法对体内 3D-OCT 的运动校正效果达到了亚像素精度。此外,实验还利用所提出的方法提取了成像对象的生理信息,包括呼吸曲线和呼吸频率。所提出的方法为眼科学的科学研究和临床诊断提供了强有力的工具,并可进一步扩展到其他生物医学容积成像应用中。
Subpixel motion artifacts correction and motion estimation for 3D-OCT
A number of hardware-based and software-based strategies have been suggested to eliminate motion artifacts for improvement of 3D-optical coherence tomography (OCT) image quality. However, the hardware-based strategies have to employ additional hardware to record motion compensation information. Many software-based strategies have to need additional scanning for motion correction at the expense of longer acquisition time. To address this issue, we propose a motion artifacts correction and motion estimation method for OCT volumetric imaging of anterior segment, without requirements of additional hardware and redundant scanning. The motion correction effect with subpixel accuracy for in vivo 3D-OCT has been demonstrated in experiments. Moreover, the physiological information of imaging object, including respiratory curve and respiratory rate, has been experimentally extracted using the proposed method. The proposed method offers a powerful tool for scientific research and clinical diagnosis in ophthalmology and may be further extended for other biomedical volumetric imaging applications.
期刊介绍:
The first international journal dedicated to publishing reviews and original articles from this exciting field, the Journal of Biophotonics covers the broad range of research on interactions between light and biological material. The journal offers a platform where the physicist communicates with the biologist and where the clinical practitioner learns about the latest tools for the diagnosis of diseases. As such, the journal is highly interdisciplinary, publishing cutting edge research in the fields of life sciences, medicine, physics, chemistry, and engineering. The coverage extends from fundamental research to specific developments, while also including the latest applications.