Tumor segmentation from magnetic resonance images (MRI) is an error-prone and time-absorbing process. Recently, optical methods have opened a new avenue to tack with the aforementioned problem. In this paper, we propose a novel architecture adapting the Optical Scanning Holography (OSH) to the detection of the abnormal tissue regions in MRI. The proposed method combines an off-axis optical scan, performed by a heterodyne fringe pattern, and a MR image display ensured by a spatial light modulator. The output in-phase component of the scanned current is collected digitally. Hence, a high-precision distribution of biological tissues is extracted using this in-phase component. Its maximum position is exactly the one of the tumor. Meanwhile, this position is used in an Active Contour Model (ACM) to perform a fast segmentation of the extent corresponding to the tumors. Several images of brain tumors from BRATS database, with tumors having different contrast and form, are used to test the proposed system. Parameters reverted by the optical process are used to investigate the detection performance. Further, in terms of tumor segmentation, the proposed OSH-ACM process has high performance metrics compared to some of recently published method. The underlying physics of the precision superiority, presented by the OSH-ACM, is the high-precision extraction of the abnormal tissue regions by the in-phase component of the scanned current.

从磁共振图像（MRI）进行肿瘤分割是一个容易出错且耗时的过程。近来，光学方法为解决上述问题开辟了新途径。在本文中，我们提出了一种新颖的体系结构，该体系结构适用于光学扫描全息术（OSH）以检测MRI中的异常组织区域。所提出的方法结合了由外差条纹图案执行的离轴光学扫描和由空间光调制器确保的MR图像显示。扫描电流的输出同相分量以数字方式收集。因此，使用该同相成分可以提取生物组织的高精度分布。它的最大位置正好是肿瘤之一。与此同时，该位置用于主动轮廓模型（ACM）中以对与肿瘤相对应的范围进行快速分割。来自BRATS数据库的脑肿瘤的几个图像，具有不同的对比度和形式的肿瘤，被用来测试所提出的系统。通过光学过程还原的参数用于研究检测性能。此外，就肿瘤分割而言，与最近发表的一些方法相比，拟议的OSH-ACM工艺具有较高的性能指标。OSH-ACM提出的精度优势的基本原理是通过扫描电流的同相分量对异常组织区域进行高精度提取。通过光学过程还原的参数用于研究检测性能。此外，就肿瘤分割而言，与最近发表的一些方法相比，拟议的OSH-ACM工艺具有较高的性能指标。OSH-ACM提出的精度优势的基本原理是通过扫描电流的同相分量对异常组织区域进行高精度提取。通过光学过程还原的参数用于研究检测性能。此外，就肿瘤分割而言，与最近发表的一些方法相比，拟议的OSH-ACM工艺具有较高的性能指标。OSH-ACM提出的精度优势的基本原理是通过扫描电流的同相分量对异常组织区域进行高精度提取。