Pulmonary Artery Diameter
| Purpose | Automate pulmonary artery size measurements |
| Tag(s) | #MPA:AO |
| Panel | Cardiac |
| Define-AI ID | 18040015 |
| Originator | Jay Nance |
| Panel Chair | Carlo De Cecco |
| Panel Reviewers | Cardiac Panel |
| License | |
| Status | Published |
Clinical Implementation
Value Proposition
Pulmonary artery size is an imperfect imaging biomarker of pulmonary hypertension, but it has shown prognostic value in a variety of clinical situations. Cutoffs for abnormal values have been proposed and validated. Automated quantification would save the interpreting physician time via elimination of manual measurements, would prevent detection errors (missing enlarged pulmonary arteries), and would provide structured quantitative data, which could be used in later studies or risk-stratification schemes.Narrative(s)
All patients undergoing CT examinations through the level of the main pulmonary artery should have automated quantification of arterial diameter, which should then be automatically populated into the radiology report or a report supplement. This use case will focus specifically on relevant cardiac imaging modalities, ie, electrocardiogram (ECG)-synchronized coronary artery calcium scoring, coronary CT angiography (CCTA), and full-chest CT angiography (triple rule-out scans).Workflow Description
A patient receives ECG-synchronized CT of the chest and heart. An algorithm retrieves a volumetric imaging data set and accessible electronic medical record data, including age, sex, and body mass index. The algorithm executes and returns the main pulmonary artery distal to the valve but prior to the bifurcation. The proximal right and left pulmonary arteries are also measured. Please note, these values have shown limited value in the literature, and this feature should be considered optional. The algorithm returns all values, which could populate the report (possibly within a supplement containing other quantitative data). The algorithm flags abnormal values.Considerations for Dataset Development
Procedures(s): ECG-synchronized CT, Chest
Sex at Birth: {Male, Female}
Age (years): [15,90]
Body Mass Index (kg/m2): [10,52]
Body Surface Area: varied
Aortic Diameter (mm): [20,40]
Abnormalities: {Congenital heart disease, ventricular septal defects}
Interventions: {Congenital heart disease repair, mitral valve replacements}
Contrast: {Contrast-enhanced (CCTA), non-contrast enhanced applications}
Technical Specifications
Inputs
DICOM Study
| Procedure | ECG-synchronized CT, Chest |
| Data Type | DICOM |
| Modality | CT |
| Body Region | Chest |
| Anatomic Focus | Heart |
Primary Outputs
Main Pulmonary Artery Diameter
| RadElement ID | |
| Definition | Diameter of main pulmonary artery (mm) |
| Data Type | Numeric |
| Value Set |
|
| Units | mm |
Secondary Outputs
Left Pulmonary Artery Diameter
| RadElement ID | |
| Definition | Diameter of left pulmonary artery (mm) |
| Data Type | Numeric |
| Value Set |
|
| Units | mm |
Right Pulmonary Artery Diameter
| RadElement ID | RDE314 |
| Definition | Diameter of right pulmonary artery (mm) |
| Data Type | Numeric |
| Value Set |
|
| Units | mm |
Pulmonary Artery to Aortic Diameter Ratio
| RadElement ID | |
| Definition | Main pulmonary artery to aortic diameter ratio (MPA:Ao) |
| Data Type | Numeric |
| Value Set |
|
| Units |
|
Related Datasets
No known related public datasets at this time, please alert us if you know of any.