Cervical Rib Detection on CT

Purpose

Cervical rib detection on CT

Tag(s)

 

Panel

Musculoskeletal Panel

Define-AI 

19050031

Originator

Woojin Kim
Lead Woojin Kim

Panel Chair

Jay Patti 

Panel Reviewers

Musculoskeletal Panel

License

Creative Commons 4.0 
Status Public Commenting
RadElement Set RDES113
                               

Clinical Implementation


Value Proposition 

Cervical rib, which is a congenital anomaly, is an accessory rib that grows above the first rib from C7 and can be on the right, left, or both sides. Occurring in less than 1% of the population, a cervical rib can vary in size and shape and is often an incidental finding without symptoms. However, in some cases (up to 10% of the affected individuals), cervical ribs can cause problems, such as thoracic outlet syndrome (TOS) or brachial plexopathy by compressing the brachial plexus or the subclavian vessels. While individuals with a cervical rib are ten times more likely to develop TOS, this variant is commonly overlooked in medical imaging [Viertel et al., AJNR 2012].

Narrative(s)

A 30-year-old female presents with numbness and tingling of her right upper extremity. A CT of the cervical spine is performed. The patient is found to have a right-sided cervical rib, causing TOS. Radiologists can easily miss a cervical rib (or ribs, if bilateral) and would benefit from an algorithm that can detect and alert the radiologists as this congenital variant has been known to cause TOS.

Workflow Description


Images obtained from the CT scan are sent to the PACS/viewer and the AI model. The AI model analyzes the images. The model identifies the presence of a cervical rib or cervical ribs. A message is sent to both the PACS/viewer and the reporting solution from the model with this information.


Considerations for Dataset Development



Procedures(s)

{Cervical spine CT, Neck CT, Chest CT, Neck/Cervical CTA}

View(s)

{Coronall}

Sex at Birth

{Male, Female}

Age

[18, 60]

Technical Specifications


Inputs

 

DICOM Study

Procedure

Cervical spine CT

Views

Coronal

Data Type

DICOM

Modality

CT

Body Region

Cervical Spine

Anatomic Focus

Cervical Spine



Primary Outputs

 

Cervical Rib Detection

RadElement ID

RDE719

Definition

Detection of cervical rib

Data Type

Categorical

Value Set

  • Absent
  • Present
  • Unknown

Units

N/A

Cervical Rib Laterality

RadElement ID

RDE720

Definition

Cervical rib location

Data Type

Categorical

Value Set

  • Unknown
  • Left
  • Right
  • Bilateral

Units

N/A

 

Future Development Ideas


  • Include sagittal images for the cross-sectional imaging for the detection of cervical rib.
  • Give more quantitative information about the cervical rib, such as its size or volume as well as whether it is a fully-formed bony rib or a fiber/strand.