{
  "id": 598889,
  "title": "What is the nii file (with out cowseg)? Is it the same as the DICOM in the same floder?",
  "url": "/competitions/rsna-intracranial-aneurysm-detection/discussion/598889",
  "author_name": "Yuzhi Xu",
  "post_date": "2025-08-13T09:09:53.577000",
  "votes": 2,
  "comment_count": 1,
  "views": 0,
  "content": "<p>It says \"segmentations/ Contains NifTI vessel segmentations for a subset of the DICOM series in series/\".<br>\nIn the segmentations there are two files. The file with \"cowseg\" is the mask. So, is the file without \"cowseg\" the same as DICOM and \"Modality\" of nii file is the same as that in DICOM?</p>",
  "messages": [
    {
      "id": 3268956,
      "postDate": "2025-08-13T16:53:11.513Z",
      "content": "<p>Yes, the file without the \"cowseg\" suffix is just a NIfTI version of the corresponding image data. So its the same image content as the corresponding DICOM and has the same modality.</p>",
      "rawMarkdown": "Yes, the file without the \"cowseg\" suffix is just a NIfTI version of the corresponding image data. So its the same image content as the corresponding DICOM and has the same modality.",
      "votes": 1
    },
    {
      "id": 3268662,
      "postDate": "2025-08-13T09:09:53.577Z",
      "content": "<p>It says \"segmentations/ Contains NifTI vessel segmentations for a subset of the DICOM series in series/\".<br>\nIn the segmentations there are two files. The file with \"cowseg\" is the mask. So, is the file without \"cowseg\" the same as DICOM and \"Modality\" of nii file is the same as that in DICOM?</p>",
      "rawMarkdown": "It says \"segmentations/ Contains NifTI vessel segmentations for a subset of the DICOM series in series/\".\nIn the segmentations there are two files. The file with \"cowseg\" is the mask. So, is the file without \"cowseg\" the same as DICOM and \"Modality\" of nii file is the same as that in DICOM?",
      "votes": 2
    }
  ],
  "comments": [
    {
      "id": 3268956,
      "author_name": "Evan Calabrese",
      "author_url": "",
      "post_date": "2025-08-13T16:53:11.513000",
      "content": "<p>Yes, the file without the \"cowseg\" suffix is just a NIfTI version of the corresponding image data. So its the same image content as the corresponding DICOM and has the same modality.</p>",
      "votes": 1,
      "replies": []
    }
  ],
  "raw_markdown_by_id": {
    "3268956": "Yes, the file without the \"cowseg\" suffix is just a NIfTI version of the corresponding image data. So its the same image content as the corresponding DICOM and has the same modality.",
    "3268662": "It says \"segmentations/ Contains NifTI vessel segmentations for a subset of the DICOM series in series/\".\nIn the segmentations there are two files. The file with \"cowseg\" is the mask. So, is the file without \"cowseg\" the same as DICOM and \"Modality\" of nii file is the same as that in DICOM?"
  }
}