{
  "id": 528652,
  "title": "Unusual Annotations: Single Misaligned Annotation and Corner Placement – Possible Errors?",
  "url": "/competitions/rsna-2024-lumbar-spine-degenerative-classification/discussion/528652",
  "author_name": "",
  "post_date": "2024-08-16T16:35:50.185811200Z",
  "votes": 2,
  "comment_count": 2,
  "views": 0,
  "content": "<p>Hello everyone,</p>\n<p>I should mention that I don’t have much experience with medical images in general.</p>\n<p>While analyzing the dataset, I encountered a few <strong>unusual annotations</strong> that I’d like to get some clarification on:</p>\n<p>In one series, there is a <strong>single annotation</strong> that seems <strong>slightly misaligned to the left and doesn’t appear to correspond to anything specific</strong>:</p>\n<p>Details: series_id: 4147986695, instance_number: 1, condition: Spinal Canal Stenosis, level: L1/L2, coordinates: (161.77, 270.51)<br>\n<img src=\"https://www.googleapis.com/download/storage/v1/b/kaggle-forum-message-attachments/o/inbox%2F10286529%2F0f20e7315f25b8843124e8cf50f9e4c8%2FCapture%20dcran%20du%202024-08-16%2018-33-01.png?generation=1723826010644473&amp;alt=media\" alt=\"\"></p>\n<p>In another series, an annotation is <strong>placed in the upper left corner</strong>:</p>\n<p>Details: series_id: 2231471633, instance_number: 9, condition: Spinal Canal Stenosis, level: L1/L2, coordinates: <strong>(5.0, 5.0)</strong></p>\n<p><img src=\"https://www.googleapis.com/download/storage/v1/b/kaggle-forum-message-attachments/o/inbox%2F10286529%2Febf95bb840b616c83f3d0539356ac6bf%2FCapture%20dcran%20du%202024-08-16%2018-34-55.png?generation=1723826110112517&amp;alt=media\" alt=\"\"></p>\n<p><strong>This placement seems particularly strange.</strong></p>\n<p>Additionally, I have noticed that in some series, there are only 1, 2, 3, or 4 annotations out of 5 for conditions such as Spinal Canal Stenosis, <strong>even though it seems that all relevant structures are clearly visible</strong>. I’m curious to know why some conditions have fewer annotations than others and if this variation is intentional. Furthermore, could someone explain what these annotations generally correspond to? <strong>I’m not sure I fully understand</strong>. It seems odd to me that <strong>some series have fewer annotations even when the structures appear clearly visible</strong>.</p>\n<p>Could anyone clarify whether these annotations are accurate and intentional, or if they might be <strong>errors?</strong> Any insights or confirmation from the community or the organizers would be greatly appreciated.</p>\n<p>Thank you for your help!</p>",
  "messages": [
    {
      "id": "2961474",
      "postDate": "08/16/2024 16:35:50",
      "content": "<p>Hello everyone,</p>\n<p>I should mention that I don’t have much experience with medical images in general.</p>\n<p>While analyzing the dataset, I encountered a few <strong>unusual annotations</strong> that I’d like to get some clarification on:</p>\n<p>In one series, there is a <strong>single annotation</strong> that seems <strong>slightly misaligned to the left and doesn’t appear to correspond to anything specific</strong>:</p>\n<p>Details: series_id: 4147986695, instance_number: 1, condition: Spinal Canal Stenosis, level: L1/L2, coordinates: (161.77, 270.51)<br>\n<img src=\"https://www.googleapis.com/download/storage/v1/b/kaggle-forum-message-attachments/o/inbox%2F10286529%2F0f20e7315f25b8843124e8cf50f9e4c8%2FCapture%20dcran%20du%202024-08-16%2018-33-01.png?generation=1723826010644473&amp;alt=media\" alt=\"\"></p>\n<p>In another series, an annotation is <strong>placed in the upper left corner</strong>:</p>\n<p>Details: series_id: 2231471633, instance_number: 9, condition: Spinal Canal Stenosis, level: L1/L2, coordinates: <strong>(5.0, 5.0)</strong></p>\n<p><img src=\"https://www.googleapis.com/download/storage/v1/b/kaggle-forum-message-attachments/o/inbox%2F10286529%2Febf95bb840b616c83f3d0539356ac6bf%2FCapture%20dcran%20du%202024-08-16%2018-34-55.png?generation=1723826110112517&amp;alt=media\" alt=\"\"></p>\n<p><strong>This placement seems particularly strange.</strong></p>\n<p>Additionally, I have noticed that in some series, there are only 1, 2, 3, or 4 annotations out of 5 for conditions such as Spinal Canal Stenosis, <strong>even though it seems that all relevant structures are clearly visible</strong>. I’m curious to know why some conditions have fewer annotations than others and if this variation is intentional. Furthermore, could someone explain what these annotations generally correspond to? <strong>I’m not sure I fully understand</strong>. It seems odd to me that <strong>some series have fewer annotations even when the structures appear clearly visible</strong>.</p>\n<p>Could anyone clarify whether these annotations are accurate and intentional, or if they might be <strong>errors?</strong> Any insights or confirmation from the community or the organizers would be greatly appreciated.</p>\n<p>Thank you for your help!</p>",
      "rawMarkdown": "Hello everyone,\n\nI should mention that I don’t have much experience with medical images in general.\n\nWhile analyzing the dataset, I encountered a few **unusual annotations** that I’d like to get some clarification on:\n\nIn one series, there is a **single annotation** that seems **slightly misaligned to the left and doesn’t appear to correspond to anything specific**:\n\nDetails: series_id: 4147986695, instance_number: 1, condition: Spinal Canal Stenosis, level: L1/L2, coordinates: (161.77, 270.51)\n![](https://www.googleapis.com/download/storage/v1/b/kaggle-forum-message-attachments/o/inbox%2F10286529%2F0f20e7315f25b8843124e8cf50f9e4c8%2FCapture%20dcran%20du%202024-08-16%2018-33-01.png?generation=1723826010644473&alt=media)\n\nIn another series, an annotation is **placed in the upper left corner**:\n\nDetails: series_id: 2231471633, instance_number: 9, condition: Spinal Canal Stenosis, level: L1/L2, coordinates: **(5.0, 5.0)**\n\n![](https://www.googleapis.com/download/storage/v1/b/kaggle-forum-message-attachments/o/inbox%2F10286529%2Febf95bb840b616c83f3d0539356ac6bf%2FCapture%20dcran%20du%202024-08-16%2018-34-55.png?generation=1723826110112517&alt=media)\n\n**This placement seems particularly strange.**\n\nAdditionally, I have noticed that in some series, there are only 1, 2, 3, or 4 annotations out of 5 for conditions such as Spinal Canal Stenosis, **even though it seems that all relevant structures are clearly visible**. I’m curious to know why some conditions have fewer annotations than others and if this variation is intentional. Furthermore, could someone explain what these annotations generally correspond to? **I’m not sure I fully understand**. It seems odd to me that **some series have fewer annotations even when the structures appear clearly visible**.\n\nCould anyone clarify whether these annotations are accurate and intentional, or if they might be **errors?** Any insights or confirmation from the community or the organizers would be greatly appreciated.\n\nThank you for your help!",
      "votes": null
    },
    {
      "id": "2961493",
      "postDate": "08/16/2024 16:50:08",
      "content": "<p>also : 283265383,221289021,10,Spinal Canal Stenosis,L5/S1,71.8,71.3</p>\n<p><img src=\"https://www.googleapis.com/download/storage/v1/b/kaggle-forum-message-attachments/o/inbox%2F10286529%2F4e9bb1ec459328d737b57e6f736fa754%2FCapture%20dcran%20du%202024-08-16%2018-44-24.png?generation=1723826685396213&amp;alt=media\" alt=\"\"></p>",
      "rawMarkdown": "also : 283265383,221289021,10,Spinal Canal Stenosis,L5/S1,71.8,71.3\n\n![](https://www.googleapis.com/download/storage/v1/b/kaggle-forum-message-attachments/o/inbox%2F10286529%2F4e9bb1ec459328d737b57e6f736fa754%2FCapture%20dcran%20du%202024-08-16%2018-44-24.png?generation=1723826685396213&alt=media)",
      "votes": null
    },
    {
      "id": "2961518",
      "postDate": "08/16/2024 17:11:54",
      "content": "<p>check this out <a href=\"https://www.kaggle.com/competitions/rsna-2024-lumbar-spine-degenerative-classification/discussion/512048#2870939\" target=\"_blank\">link</a></p>",
      "rawMarkdown": "check this out [link](https://www.kaggle.com/competitions/rsna-2024-lumbar-spine-degenerative-classification/discussion/512048#2870939)",
      "votes": null
    }
  ],
  "comments": [
    {
      "id": 2961493,
      "author_name": "hasanbasbunar",
      "author_url": "",
      "post_date": "08/16/2024 16:50:08",
      "content": "<p>also : 283265383,221289021,10,Spinal Canal Stenosis,L5/S1,71.8,71.3</p>\n<p><img src=\"https://www.googleapis.com/download/storage/v1/b/kaggle-forum-message-attachments/o/inbox%2F10286529%2F4e9bb1ec459328d737b57e6f736fa754%2FCapture%20dcran%20du%202024-08-16%2018-44-24.png?generation=1723826685396213&amp;alt=media\" alt=\"\"></p>",
      "votes": null,
      "replies": []
    },
    {
      "id": 2961518,
      "author_name": "sergiosaharovskiy",
      "author_url": "",
      "post_date": "08/16/2024 17:11:54",
      "content": "<p>check this out <a href=\"https://www.kaggle.com/competitions/rsna-2024-lumbar-spine-degenerative-classification/discussion/512048#2870939\" target=\"_blank\">link</a></p>",
      "votes": null,
      "replies": []
    }
  ],
  "raw_markdown_by_id": {
    "2961474": "Hello everyone,\n\nI should mention that I don’t have much experience with medical images in general.\n\nWhile analyzing the dataset, I encountered a few **unusual annotations** that I’d like to get some clarification on:\n\nIn one series, there is a **single annotation** that seems **slightly misaligned to the left and doesn’t appear to correspond to anything specific**:\n\nDetails: series_id: 4147986695, instance_number: 1, condition: Spinal Canal Stenosis, level: L1/L2, coordinates: (161.77, 270.51)\n![](https://www.googleapis.com/download/storage/v1/b/kaggle-forum-message-attachments/o/inbox%2F10286529%2F0f20e7315f25b8843124e8cf50f9e4c8%2FCapture%20dcran%20du%202024-08-16%2018-33-01.png?generation=1723826010644473&alt=media)\n\nIn another series, an annotation is **placed in the upper left corner**:\n\nDetails: series_id: 2231471633, instance_number: 9, condition: Spinal Canal Stenosis, level: L1/L2, coordinates: **(5.0, 5.0)**\n\n![](https://www.googleapis.com/download/storage/v1/b/kaggle-forum-message-attachments/o/inbox%2F10286529%2Febf95bb840b616c83f3d0539356ac6bf%2FCapture%20dcran%20du%202024-08-16%2018-34-55.png?generation=1723826110112517&alt=media)\n\n**This placement seems particularly strange.**\n\nAdditionally, I have noticed that in some series, there are only 1, 2, 3, or 4 annotations out of 5 for conditions such as Spinal Canal Stenosis, **even though it seems that all relevant structures are clearly visible**. I’m curious to know why some conditions have fewer annotations than others and if this variation is intentional. Furthermore, could someone explain what these annotations generally correspond to? **I’m not sure I fully understand**. It seems odd to me that **some series have fewer annotations even when the structures appear clearly visible**.\n\nCould anyone clarify whether these annotations are accurate and intentional, or if they might be **errors?** Any insights or confirmation from the community or the organizers would be greatly appreciated.\n\nThank you for your help!",
    "2961493": "also : 283265383,221289021,10,Spinal Canal Stenosis,L5/S1,71.8,71.3\n\n![](https://www.googleapis.com/download/storage/v1/b/kaggle-forum-message-attachments/o/inbox%2F10286529%2F4e9bb1ec459328d737b57e6f736fa754%2FCapture%20dcran%20du%202024-08-16%2018-44-24.png?generation=1723826685396213&alt=media)",
    "2961518": "check this out [link](https://www.kaggle.com/competitions/rsna-2024-lumbar-spine-degenerative-classification/discussion/512048#2870939)"
  },
  "source": "meta"
}