arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2204.01201eess.IVcs.CV
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一种基于图像减影的异质性脑肿瘤分割新模型R-CNN

A Novel Mask R-CNN Model to Segment Heterogeneous Brain Tumors through Image Subtraction

BASIS Independent Silicon Valley(BASIS独立硅谷学校)

Sanskriti Singh

摘要:

疾病的分割是机器学习领域研究人员探索的一个热门话题。脑肿瘤是非常危险的,需要最高的精度来分割成功的手术。肿瘤患者通常需要进行4次MRI扫描,T1,T1 gd,T2和FLAIR,然后将其发送给放射科医生进行分割和分析,以便将来可能进行手术。为了创建第二分割,这将有利于放射科医生和患者对他们的结论更有信心。我们建议使用一种由放射科医生执行的称为图像分割的方法,并将其应用于机器学习模型,以证明更好的分割。使用Mask R-CNN,其ResNet主干在RSNA肺炎检测挑战数据集上进行预训练,我们可以在Brats 2020脑肿瘤数据集上训练模型。生物医学图像计算与分析中心提供关于患有和没有脑肿瘤的患者的MRI数据以及相应的分割。我们可以通过DICE系数(F1得分),召回率和未接触测试集上的精确度来比较图像减法与没有图像减法的模型,从而了解图像减法的效果。我们的模型在DICE系数为0.75的情况下执行,而在没有图像减影的情况下为0.69。为了进一步强调图像减影的有用性,我们将我们的最终模型与当前最先进的模型进行比较,以从MRI扫描中分割肿瘤。

英文摘要:

The segmentation of diseases is a popular topic explored by researchers in the field of machine learning. Brain tumors are extremely dangerous and require the utmost precision to segment for a successful surgery. Patients with tumors usually take 4 MRI scans, T1, T1gd, T2, and FLAIR, which are then sent to radiologists to segment and analyze for possible future surgery. To create a second segmentation, it would be beneficial to both radiologists and patients in being more confident in their conclusions. We propose using a method performed by radiologists called image segmentation and applying it to machine learning models to prove a better segmentation. Using Mask R-CNN, its ResNet backbone being pre-trained on the RSNA pneumonia detection challenge dataset, we can train a model on the Brats2020 Brain Tumor dataset. Center for Biomedical Image Computing & Analytics provides MRI data on patients with and without brain tumors and the corresponding segmentations. We can see how well the method of image subtraction works by comparing it to models without image subtraction through DICE coefficient (F1 score), recall, and precision on the untouched test set. Our model performed with a DICE coefficient of 0.75 in comparison to 0.69 without image subtraction. To further emphasize the usefulness of image subtraction, we compare our final model to current state-of-the-art models to segment tumors from MRI scans.

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。

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