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

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.

Procedures(s)	{Cervical spine CT, Neck CT, Chest CT, Neck/Cervical CTA}
View(s)	{Coronall}
Sex at Birth	{Male, Female}
Age	[18, 60]

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

 

• 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.

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