Detection of Weight-Bearing Foot Radiographs

Purpose

Detect foot radiographs that used weight-bearing or simulated weight-bearing techniques

Tag(s)

Panel

Pediatric

Define-AI ID

20010009

Originator

Pediatrics Panel
Lead Viet Le & Alex Towbin

Panel Chair

Steven Blumer

Panel Reviewers

Pediatric Panel

License

Creative Commons 4.0
Status Public Comment
RadElement Set RDES198
                               

Clinical Implementation


Value Proposition

Weight-bearing radiographs are necessary for accurate evaluation of the feet, whether it be in the setting of congenital and acquired abnormalities or trauma from ligamentous injuries.

The purpose of this use case is to use AI to distinguish weight-bearing studies from non-weight-bearing studies in order to improve accuracy of evaluating congenital and acquired foot abnormalities. 

Narrative(s)

Three-year-old female presents to the pediatrician with abnormal gait and in-toeing. Bilateral, weight-bearing three -view foot radiographs are obtained for evaluation of foot deformities.

Six month-old male presents for contractures/abnormal positioning of the feet. Bilateral, three-view foot radiographs with simulated weight-bearing are obtained for evaluation of foot deformities.


Workflow Description

Radiographs of the foot/feet are ordered, obtained, sent to PACS and the algorithm is triggered.


The algorithm delivers the following outputs: yes (=1) or no (=0).

Considerations for Dataset Development


Procedures

X-ray, Foot

Radiograph

Gender

Male, Female

Age (years)

0-18

Views

AP, Lateral, Oblique

Technique

Weight-bearing, Simulated weight-bearing, Non-weight-bearing, Portable, Standing, Erect, Supine

Anatomy

Foot, Feet

Objects to Identify

Cast, Splint, Brace, Sponge, Wood Board

Text to Identify

Weight-bearing, Simulated weight-bearing, Non-weight-bearing, Portable, Standing, Sponge, Wood Board, Erect, Supine



Technical Specifications


Input


DICOM Study

Procedure

X-ray, Foot Radiograph

Views

AP or Lateral or Oblique

Data Type

DICOM

Modality

X-ray

Body Region

Lower Extremity

Anatomic Focus

Foot


Primary Outputs

 

Text Detection of Weight-Bearing Techniques: Weight-bearing, wt-bearing, wtb   

RadElement ID

RDE1315 

Definition

Detection of a weight-bearing versus non-weight-bearing examination via text on the image/labeling

Data Type

Categorical

Value Set

  • No

  • Yes

Units

N/A


Text Detection of Weight-Bearing Techniques: Simulated weight-bearing, sim wt-bearing      

RadElement ID

RDE1316 

Definition

Detection of a simulated weight-bearing versus non-weight-bearing examination via text on the image/labeling

Data Type

Categorical

Value Set

  • No

  • Yes

Units

N/A


Text Detection of Weight-Bearing Techniques: Standing   

RadElement ID

RDE1317 


Definition

Detection of a standing technique versus non-standing technique via text on the image/labeling

Data Type

Categorical

Value Set

  • No

  • Yes

Units

N/A


Text Detection of Weight-Bearing Techniques: Erect

RadElement ID

RDE1318 

Definition

Detection of an erect versus supine examination via text on the image/labeling

Data Type

Categorical

Value Set

  • No

  • Yes

Units

N/A


Object Detection of Weight-Bearing Techniques: Sponge       

RadElement ID

RDE1319 

Definition

Is a sponge present (which simulates weight-bearing technique)?

Data Type

Categorical

Value Set

  • No

  • Yes

Units

N/A


Object Detection of Weight-Bearing Techniques: Wood Board   

RadElement ID

RDE1320 

Definition

Is a wood board present (which allows for a weight-bearing technique)?

Data Type

Categorical

Value Set

  • No

  • Yes

Units

N/A


Object Detection of support material: cast/splint       

RadElement ID

RDE1321 

Definition

Is a cast or split present (which prevents weight-bearing)?

Data Type

Categorical

Value Set

  • No

  • Yes

Units

N/A


Secondary Outputs 

 

Determination of Weight-bearing   

RadElement ID

RDE1322 

Definition

Was a weight-bearing study performed?

Data Type

Categorical

Value Set

  • No

  • Yes

Units

N/A


Notes

  1. A study is considered to be weight-bearing if the value set = 1 for ANY of the primary outputs 1-6 AND the value set = 0 for primary output 7

  2. A study is considered to be non-weight bearing if the value set = 0 for ALL of the primary outputs 1-6 OR the value set = 1 for primary output 7

Future Development Ideas


Future applications can be expanded to use in trauma evaluation cases for soft tissue/ligamentous injuries (e.g., widening of the ankle joint space in acute ankle fractures).