{
  "id": 518441,
  "title": "Clarification on Normal/Mild Annotated Regions",
  "url": "/competitions/rsna-2024-lumbar-spine-degenerative-classification/discussion/518441",
  "author_name": "",
  "post_date": "2024-07-06T14:50:06.193201800Z",
  "votes": 3,
  "comment_count": 1,
  "views": 0,
  "content": "<p>Hello,</p>\n<p>I just wanted to clarify if there are much more normal/mild regions than were annotated. For example, in the sample below, we can observe normal/mild level of left neural foraminal narrowing in L5/S1 given that there is little fat effacement within the bounding box region. However, we can make a similar observation about the unannotated foramina above it. Those are probably normal/mild too. If so, are the <strong>annotated</strong> normal/mild regions somehow special than the <strong>unannotated</strong> ones? Or are the annotated regions just pedagogical samples of what normal foramina are supposed to look like?</p>\n<p>In contrast, were all the annotated moderate/severe regions all that were observed to be moderate/severe? Meaning, was the best effort made to ensure that all moderate/severe regions were annotated?</p>\n<p><img src=\"https://www.googleapis.com/download/storage/v1/b/kaggle-forum-message-attachments/o/inbox%2F9833631%2F8daff7a94fc3300c7faa45b8809ece3a%2Fsample_normal.png?generation=1720276638819372&amp;alt=media\" alt=\"Sample of Mild Normal\"></p>",
  "messages": [
    {
      "id": "2908786",
      "postDate": "07/06/2024 14:50:06",
      "content": "<p>Hello,</p>\n<p>I just wanted to clarify if there are much more normal/mild regions than were annotated. For example, in the sample below, we can observe normal/mild level of left neural foraminal narrowing in L5/S1 given that there is little fat effacement within the bounding box region. However, we can make a similar observation about the unannotated foramina above it. Those are probably normal/mild too. If so, are the <strong>annotated</strong> normal/mild regions somehow special than the <strong>unannotated</strong> ones? Or are the annotated regions just pedagogical samples of what normal foramina are supposed to look like?</p>\n<p>In contrast, were all the annotated moderate/severe regions all that were observed to be moderate/severe? Meaning, was the best effort made to ensure that all moderate/severe regions were annotated?</p>\n<p><img src=\"https://www.googleapis.com/download/storage/v1/b/kaggle-forum-message-attachments/o/inbox%2F9833631%2F8daff7a94fc3300c7faa45b8809ece3a%2Fsample_normal.png?generation=1720276638819372&amp;alt=media\" alt=\"Sample of Mild Normal\"></p>",
      "rawMarkdown": "Hello,\n\nI just wanted to clarify if there are much more normal/mild regions than were annotated. For example, in the sample below, we can observe normal/mild level of left neural foraminal narrowing in L5/S1 given that there is little fat effacement within the bounding box region. However, we can make a similar observation about the unannotated foramina above it. Those are probably normal/mild too. If so, are the **annotated** normal/mild regions somehow special than the **unannotated** ones? Or are the annotated regions just pedagogical samples of what normal foramina are supposed to look like?\n\nIn contrast, were all the annotated moderate/severe regions all that were observed to be moderate/severe? Meaning, was the best effort made to ensure that all moderate/severe regions were annotated?\n\n![Sample of Mild Normal](https://www.googleapis.com/download/storage/v1/b/kaggle-forum-message-attachments/o/inbox%2F9833631%2F8daff7a94fc3300c7faa45b8809ece3a%2Fsample_normal.png?generation=1720276638819372&alt=media)",
      "votes": null
    },
    {
      "id": "2911152",
      "postDate": "07/08/2024 06:01:34",
      "content": "<p>This is just my understanding: most of  series ids gets 5 annotation representing the 5 levels of lumbar spine. So there are many totally healthy annotated region. You can check for yourself by combining the label_coordinates file and the train csv file.</p>",
      "rawMarkdown": "This is just my understanding: most of  series ids gets 5 annotation representing the 5 levels of lumbar spine. So there are many totally healthy annotated region. You can check for yourself by combining the label_coordinates file and the train csv file.",
      "votes": null
    }
  ],
  "comments": [
    {
      "id": 2911152,
      "author_name": "llleeeoooh",
      "author_url": "",
      "post_date": "07/08/2024 06:01:34",
      "content": "<p>This is just my understanding: most of  series ids gets 5 annotation representing the 5 levels of lumbar spine. So there are many totally healthy annotated region. You can check for yourself by combining the label_coordinates file and the train csv file.</p>",
      "votes": null,
      "replies": []
    }
  ],
  "raw_markdown_by_id": {
    "2908786": "Hello,\n\nI just wanted to clarify if there are much more normal/mild regions than were annotated. For example, in the sample below, we can observe normal/mild level of left neural foraminal narrowing in L5/S1 given that there is little fat effacement within the bounding box region. However, we can make a similar observation about the unannotated foramina above it. Those are probably normal/mild too. If so, are the **annotated** normal/mild regions somehow special than the **unannotated** ones? Or are the annotated regions just pedagogical samples of what normal foramina are supposed to look like?\n\nIn contrast, were all the annotated moderate/severe regions all that were observed to be moderate/severe? Meaning, was the best effort made to ensure that all moderate/severe regions were annotated?\n\n![Sample of Mild Normal](https://www.googleapis.com/download/storage/v1/b/kaggle-forum-message-attachments/o/inbox%2F9833631%2F8daff7a94fc3300c7faa45b8809ece3a%2Fsample_normal.png?generation=1720276638819372&alt=media)",
    "2911152": "This is just my understanding: most of  series ids gets 5 annotation representing the 5 levels of lumbar spine. So there are many totally healthy annotated region. You can check for yourself by combining the label_coordinates file and the train csv file."
  },
  "source": "meta"
}