arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 2312.04460eess.IVphysics.med-phphysics.optics
收藏

基于深度学习的光学相干断层扫描(OCT)概率体素散斑抑制

Probabilistic volumetric speckle suppression in OCT using deep learning

Bhaskara Rao Chintada, Sebastián Ruiz-Lopera, René Restrepo, Brett E. Bouma, Martin Villiger, Néstor Uribe-Patarroyo

AI总结:

本研究提出基于cGAN的OCT体素散斑抑制深度学习框架,用TNode生成训练金标准,实现三维高效去散斑且保分辨率,速度比TNode快两个数量级,开源方案便于部署。

摘要:

我们提出了一种基于条件生成对抗网络(cGAN)的深度学习框架,用于光学相干断层扫描(OCT)的体素级散斑抑制,该框架充分利用了OCT数据的体素特性。为了利用OCT数据的体素属性,我们的网络将部分OCT体数据作为输入,输出无伪影的去散斑体数据,在三个维度上均实现了出色的散斑抑制效果且保留了分辨率。此外,我们通过使用体素非局部均值去散斑方法TNode生成训练数据,解决了监督式散斑抑制深度学习框架面临的真值数据生成难题。我们表明,尽管TNode处理的计算量很大,但它是一种便捷易得的训练数据金标准来源;我们的cGAN能够复制非局部均值去散斑的高效散斑抑制能力,同时保留尺寸接近系统分辨率的组织结构,且运算速度比TNode快两个数量级。我们在三种不同OCT系统采集的不同组织类型上验证了该网络的性能,与现有深度学习方法相比,它能快速、有效地实现高质量去散斑。本研究的开源特性有助于在任何OCT系统中通过纯软件实现进行重新训练和部署,绕开了生成高质量无散斑训练数据的难题。

英文摘要:

We present a deep learning framework for volumetric speckle reduction in optical coherence tomography (OCT) based on a conditional generative adversarial network (cGAN) that leverages the volumetric nature of OCT data. In order to utilize the volumetric nature of OCT data, our network takes partial OCT volumes as input, resulting in artifact-free despeckled volumes that exhibit excellent speckle reduction and resolution preservation in all three dimensions. Furthermore, we address the ongoing challenge of generating ground truth data for supervised speckle suppression deep learning frameworks by using volumetric non-local means despeckling-TNode to generate training data. We show that, while TNode processing is computationally demanding, it serves as a convenient, accessible gold-standard source for training data; our cGAN replicates efficient suppression of speckle while preserving tissue structures with dimensions approaching the system resolution of non-local means despeckling while being two orders of magnitude faster than TNode. We demonstrate fast, effective, and high-quality despeckling of the proposed network in different tissue types acquired with three different OCT systems compared to existing deep learning methods. The open-source nature of our work facilitates re-training and deployment in any OCT system with an all-software implementation, working around the challenge of generating high-quality, speckle-free training data.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑