Automated Measurments of Foramina on CT

Purpose

Create automated measures of foraminal stenosis on cross-sectional imaging studies of the lumbar spine

Tag(s)

 

Panel

Musculoskeletal

Define-AI ID

20050034

Originator

Douglas Mintz
Lead Douglas Mintz

Panel Chair

Jay Patti

Panel Reviewers

Musculoskeletal

License

Creative Commons 4.0 
Status Public Comment
RadElement Set  RDES163
                               

Clinical Implementation


Value Proposition

Having an automated measure of stenosis would improve radiologists' efficiency and consistency in reading cross-sectional spine studies. It could also be the starting point for research, such as the creation of normative data.

Narrative(s)

A 60 year old patient with back pain comes for a pre-operative lumbar spine CT scan to assess the degrees of bony stenosis.

Workflow Description

The CT scan is analyzed by background AI software. The software verifies the numbering of the lumbar spine and provides automated measurement in square millimeters for the neural foramina at each imaged level left and right. A sample image would be provided in order to confirm the algorithm used the correct image. The algorithm should be able to provide a numeric value for the cross sectional area of the foramen in the sagittal plane defined by the location of the pedicle for the L5/S1 foramen and sequentially every visible foramen superior to this foramen.

The system auto-populates those parts of a report for the reading radiologist to confirm. The radiologist completes the CT report.

Considerations for Dataset Development



Procedure

CT Lumbar Spine

View

.625 mm slices to the lumbar spine

Age

14 +

Note: exclude studies with surgical hardware

Technical Specifications


Inputs

 

DICOM study

Procedure

CT Lumbar Spine

Views

Volumetric Dataset

Data Type

DICOM

Modality

CT

Body Region

Lumbar Spine



Primary Outputs


Left Neural Foraminal Area Measurement

RadElement ID

RDE1133

Definition

Measure the area of the left neural foramina at each level. The algorithm should be able to provide a numeric value for the cross sectional area of the foramen in the sagittal plane defined by the location of the pedicle for the L5/S1 foramen and sequentially every visible foramen superior to this foramen.

Data Type

Numeric

Value Set

N/A

Units

mm2



Right Neural Foraminal Area Measurement

RadElement ID

RDE1134

Definition

Measure the area of the right neural foramina at each level. The algorithm should be able to provide a numeric value for the cross sectional area of the foramen in the sagittal plane defined by the location of the pedicle for the L5/S1 foramen and sequentially every visible foramen superior to this foramen.

Data Type

Numeric

Value Set

N/A

Units

mm2

Future Development Ideas


  • Expansion to other parts of the spine (cervical and thoracic) and to other modalities (MRI)

  • Research potential includes the creation and confirmation of normative data for spinal canal and foraminal areas

  • Include studies that have surgical hardware