![\"Endotracheal](\"https://www.googleapis.com/download/storage/v1/b/kaggle-forum-message-attachments/o/inbox%2F987995%2Fb06d5de6e7f05d503d13841058175fae%2Fcath_1.png?generation=1608153475269094&alt=media\")
Hi there,
\nin this topic i will share some considerations about the objects we need to classify in this competition.
\nWARNING Theory
\nIn the patient care it happens that in order to help the patients we have to insert different catheters, lines to be able to administer medications, infusions, to maintain ventilation through an endotracheal tube or even to administer nourishment directly into the stomach. The position and alignment of the inserted devices are essential, since if they are not in the right place, they cannot fulfill their intended purpose, in contrary they can worsen the patient's condition.\nIn this insight i focus on the endotracheal tube = ETT, since one of the goals is to:
\nThis is how a endotracheal tube looks like, slightly curved, with a cuff near the end. The cuff gets inflated to seal the airway when the tube is positioned through the trachea. The ETT's are inserted through the mouth of the patients.
\n
We might observe this slight curviness on x-rays to if the tube is not exactly \"from above\" projected. Note, the cuff is not directly visible on x-ray but mistakenly it can get overinflated and act as ballooning of the trachea (which may lead to unwanted complications like necrosis if the trachea wall).
\n![\"Endotracheal](\"https://www.googleapis.com/download/storage/v1/b/kaggle-forum-message-attachments/o/inbox%2F987995%2Fdb5e161e4c0419d1543f146637e8d132%2Fcath_2.png?generation=1608153516197026&alt=media\")
The tip of ETT should be situated ca. 2 cm above the division of the trachea (called carina). It must not end deeper, in one of the main bronchus (the first branch of the airways after the division).
\n![\"Endotracheal](\"https://www.googleapis.com/download/storage/v1/b/kaggle-forum-message-attachments/o/inbox%2F987995%2Feb2b57bff281b72ce9017a922912f30c%2Fcath_3.jpg?generation=1608152595633181&alt=media\")
On the image above the tip of the ETT ends in the right main bronchus, thus the ventilation of the left lung is not 100% guaranteed - the ETT must be repositioned.
\nSadly, in this competition dataset the so called tracheostomy tubes are also labelled as ETT - however they are a totally different construction, they are placed surgically through tracheostomy (hole in your trachea). These are different in shape to the real ETTs.
\n![\"Tracheostomy](\"https://www.googleapis.com/download/storage/v1/b/kaggle-forum-message-attachments/o/inbox%2F987995%2Fd2601c7fcd5cb80ff384445e709cad43%2Fcath_4.jpg?generation=1608152532712657&alt=media\")
EDIT:
\n\n
\n
\n
It seems, that the metric had been changed to mean columnwise AUC, that is enough \"incentive\" to detect the abnormally placed few =)
", "messages": [ { "id": "1116094", "postDate": "12/16/2020 20:43:10", "content": "Hi there,
\nin this topic i will share some considerations about the objects we need to classify in this competition.
\nWARNING Theory
\nIn the patient care it happens that in order to help the patients we have to insert different catheters, lines to be able to administer medications, infusions, to maintain ventilation through an endotracheal tube or even to administer nourishment directly into the stomach. The position and alignment of the inserted devices are essential, since if they are not in the right place, they cannot fulfill their intended purpose, in contrary they can worsen the patient's condition.\nIn this insight i focus on the endotracheal tube = ETT, since one of the goals is to:
\nThis is how a endotracheal tube looks like, slightly curved, with a cuff near the end. The cuff gets inflated to seal the airway when the tube is positioned through the trachea. The ETT's are inserted through the mouth of the patients.
\n
We might observe this slight curviness on x-rays to if the tube is not exactly \"from above\" projected. Note, the cuff is not directly visible on x-ray but mistakenly it can get overinflated and act as ballooning of the trachea (which may lead to unwanted complications like necrosis if the trachea wall).
\n
The tip of ETT should be situated ca. 2 cm above the division of the trachea (called carina). It must not end deeper, in one of the main bronchus (the first branch of the airways after the division).
\n
On the image above the tip of the ETT ends in the right main bronchus, thus the ventilation of the left lung is not 100% guaranteed - the ETT must be repositioned.
\nSadly, in this competition dataset the so called tracheostomy tubes are also labelled as ETT - however they are a totally different construction, they are placed surgically through tracheostomy (hole in your trachea). These are different in shape to the real ETTs.
\n
EDIT:
\n\n
\n
\n
It seems, that the metric had been changed to mean columnwise AUC, that is enough \"incentive\" to detect the abnormally placed few =)
", "rawMarkdown": "Hi there,\n\nin this topic i will **share some considerations** about the objects we need to classify in this competition.\n\n*WARNING Theory*\n```\nIn the patient care it happens that in order to help the patients we have to insert different catheters, lines to be able to administer medications, infusions, to maintain ventilation through an endotracheal tube or even to administer nourishment directly into the stomach. The position and alignment of the inserted devices are essential, since if they are not in the right place, they cannot fulfill their intended purpose, in contrary they can worsen the patient's condition.\n```\n\nIn this insight i focus on the **endotracheal tube = ETT**, since one of the goals is to:\n- detect the ETT\n- detect whether it is normal, abnormal or borderline positioned\n\nThis is how a **endotracheal tube** looks like, slightly curved, with a cuff near the end. The cuff gets inflated to seal the airway when the tube is positioned through the trachea. The ETT's are inserted through the mouth of the patients.\n\n\n\nWe might observe this slight curviness on x-rays to if the tube is not exactly \"from above\" projected. Note, the cuff is not directly visible on x-ray but mistakenly it can get overinflated and act as ballooning of the trachea (which may lead to unwanted complications like necrosis if the trachea wall).\n\n\n\nThe tip of ETT should be situated ca. 2 cm above the division of the trachea (called carina). It must not end deeper, in one of the main bronchus (the first branch of the airways after the division).\n\n\n\nOn the image above the tip of the ETT ends in the right main bronchus, thus the ventilation of the left lung is not 100% guaranteed - the ETT must be repositioned.\n\nSadly, in this competition dataset the so called **tracheostomy tubes** are also labelled as ETT - however they are a totally different construction, they are placed surgically through tracheostomy (hole in your trachea). These are different in shape to the real ETTs.\n\n\n\nEDIT:\n\n~~If you took a look at the occurence of the label \"**ETT abnormal**\" then you saw that it **is very underrepresented** in the dataset - should be to, what kind of intensive care would it be when >50% the ETTs are misplaced =)~~ \n\n~~ Sadly the metric used in this **competition is not rewarding at all to find the abormal**, since they \"count\" the same as a normally placed... so the competition is heading towards solutions that detect the presence of a device, fulfilling the first goal but not the second, what at the end is much more important. ~~ \n\n\n~~ I think **the detection of the abnormally placed devices should be weighted and score much higher!** ~~ \n\n\nIt seems, that the metric had been changed to mean columnwise AUC, that is enough \"incentive\" to detect the abnormally placed few =)", "votes": null }, { "id": "1119472", "postDate": "12/20/2020 05:16:01", "content": "Really insightful !! Thanks for sharing
", "rawMarkdown": "Really insightful !! Thanks for sharing", "votes": null }, { "id": "1120449", "postDate": "12/20/2020 20:19:48", "content": "@kabhinay ,
\nthanks!
Really insightful !! Thanks for sharing
", "votes": null, "replies": [ { "id": 1120449, "author_name": "sandorkonya", "author_url": "", "post_date": "12/20/2020 20:19:48", "content": "@kabhinay ,
\nthanks!