Lumbar Spine MRI Dataset

This data set contains anonymised clinical MRI study, or a set of scans, of 515 patients with symptomatic back pains. Each patient data can have one or more MRI studies associated with it. Each study contains slices, i.e., individual images taken from either sagittal or axial view, of the lowest three vertebrae and the lowest three IVDs. The axial view slices are mainly taken from the last three IVDs – including the one between the last vertebrae and the sacrum. The orientation of the slices of the last IVD are made to follow the spine curve whereas those of the other IVDs are usually made in blocks – i.e., parallel to each other. There are between four to five slices per IVD and they begin from the top of the IVD towards its bottom. Many of the top and bottom slices cut through the vertebrae leaving between one to three slices that cut the IVD cleanly and show purely the image of that IVD. In most cases, the total number of slices in axial view ranges from 12 to 15. However, in some cases, there may be up to 20 slices because the study contains slices of more than last three vertebrae. The scans in sagittal view also vary but all contain at least the last seven vertebrae and the sacrum. While the number of vertebrae varies, each scan always includes the first two sacral links. There are a total 48,345 MRI slices in our dataset. The majority of the slices have an image resolution of 320x320 pixels, however, there are slices from three studies with 320x310 pixel resolution. The pixels in all slices have 12-bit per pixel precision which is higher than the standard 8-bit greyscale images. Specifically for all axial-view slices, the slice thickness are uniformly 4 mm with centre-to-centre distance between adjacent slices to be 4.4 mm. The horizontal and vertical pixel spacing is 0.6875 mm uniformly across all axial-view slices. The majority of the MRI studies were taken with the patient in Head-First-Supine position with the rests were taken with the patient in in Feet-First-Supine position. Each study can last between 15 to 45 minutes and a patient may have one or more study associated with them taken at a different time or a few days apart. You can download and read the research papers detailing our methodology on boundary delineation for lumbar spinal stenosis detection using the URLs provided in the Related Links at the end of this page. You can also check out other dataset and source code related to this program from that section. We kindly request you to cite our papers when using our data or program in your research.本数据集包含515例症状性腰痛患者的匿名化临床磁共振成像（MRI）研究或扫描序列。每位患者可关联一项或多项MRI研究。每项研究包含针对最下方3节椎体与最下方3个椎间盘（Intervertebral Disc, IVD）的扫描层，即分别取自矢状位（Sagittal View）或轴位（Axial View）的单幅图像。轴位扫描层主要取自最下方3个椎间盘——包括最末椎体与骶骨（Sacrum）之间的椎间盘。最末椎间盘的扫描层方位贴合脊柱生理曲度，而其余椎间盘的扫描层通常以成组方式采集，即各层之间相互平行。每个椎间盘对应4至5层扫描层，扫描层从椎间盘顶部向底部依次采集。多数扫描层的首尾两层会穿过椎体，最终仅剩余1至3层可清晰完整地显示椎间盘本体图像。多数情况下，轴位扫描的总层数介于12至15层之间；但部分研究因包含超过最下方3节椎体的扫描层，轴位层数可达20层。矢状位扫描的层数同样存在差异，但所有扫描均至少包含最下方7节椎体与骶骨。尽管椎体数量存在差异，但每幅扫描均始终包含前2个骶椎节段。本数据集中共计48345幅MRI扫描层。绝大多数扫描层的图像分辨率为320×320像素，但另有3项研究的扫描层分辨率为320×310像素。所有扫描层的像素均采用12位精度，高于标准8位灰度图像。针对所有轴位扫描层，其层厚统一为4mm，相邻层的中心间距为4.4mm。所有轴位扫描层的水平与垂直像素间距统一为0.6875mm。绝大多数MRI研究采用头先进仰卧位（Head-First-Supine Position）采集，其余研究采用足先进仰卧位（Feet-First-Supine Position）采集。每项研究的扫描时长介于15至45分钟之间，患者可在不同时间或间隔数天后接受一项或多项关联研究。您可通过本页面末尾"相关链接"板块提供的网址，下载并阅读详述我们用于腰椎管狭窄症（Lumbar Spinal Stenosis）检测的边界勾画方法的相关研究论文。您亦可通过该板块获取本项目相关的其他数据集与源代码。若您在研究中使用本数据集或相关程序，请引用我们的研究论文，特此致谢。