Electrical Engineering and Systems Science > Image and Video Processing
[Submitted on 8 Jan 2020 (v1), last revised 28 Jan 2020 (this version, v2)]
Title:Spinal Metastases Segmentation in MR Imaging using Deep Convolutional Neural Networks
View PDFAbstract:This study's objective was to segment spinal metastases in diagnostic MR images using a deep learning-based approach. Segmentation of such lesions can present a pivotal step towards enhanced therapy planning and validation, as well as intervention support during minimally invasive and image-guided surgeries like radiofrequency ablations. For this purpose, we used a U-Net like architecture trained with 40 clinical cases including both, lytic and sclerotic lesion types and various MR sequences. Our proposed method was evaluated with regards to various factors influencing the segmentation quality, e.g. the used MR sequences and the input dimension. We quantitatively assessed our experiments using Dice coefficients, sensitivity and specificity rates. Compared to expertly annotated lesion segmentations, the experiments yielded promising results with average Dice scores up to 77.6% and mean sensitivity rates up to 78.9%. To our best knowledge, our proposed study is one of the first to tackle this particular issue, which limits direct comparability with related works. In respect to similar deep learning-based lesion segmentations, e.g. in liver MR images or spinal CT images, our experiments showed similar or in some respects superior segmentation quality. Overall, our automatic approach can provide almost expert-like segmentation accuracy in this challenging and ambitious task.
Submission history
From: Georg Hille [view email][v1] Wed, 8 Jan 2020 10:59:31 UTC (7,377 KB)
[v2] Tue, 28 Jan 2020 10:21:08 UTC (7,377 KB)
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