Cardiac Output
| Purpose | Calculate cardiac output |
| Tag(s) | #LV Functional Assessment |
| Panel | Cardiac |
| Define-AI ID | 18040013 |
| Originator | Carlo De Cecco |
| Panel Chair | Carlo De Cecco |
| Panel Reviewers | Cardiac Panel |
| License | |
| Status | Published |
Clinical Implementation
Value Proposition
Measurement of left ventricular (LV) function is a well-established clinical parameter with fundamental diagnostic, therapeutic, and prognostic implications. Cardiac CT angiography (CCTA) and cardiac magnetic resonance (CMR) allow accurate LV morphological and functional assessment. Automated LV function quantification would prevent detection errors, would save the interpreting physician time by eliminating manual measurements, and would provide structured quantitative data, which could be used in later studies or risk stratification schemes.Narrative(s)
All patients undergoing CCTA or CMR examinations should have automated quantification of LV function if data are available, which may then be automatically populated into the radiology report or a report supplement.Workflow Description
The patient receives an ECG-synchronized CCTA of the heart. The algorithm retrieves the imaging data set and may ingest other electronic medical record data such as age, sex, and body surface area (BSA). The algorithm calculates absolute LV end-diastolic volume (EDV), end-systolic volume (ESV), ejection fraction (EF), cardiac output (CO), and myocardial mass. With BSA, the algorithm computes indexed LV EDV, ESV, and myocardial mass. The algorithm returns all measurements. Absolute and indexed EDV, ESV, EF, CO, and myocardial mass may automatically populate the report, possibly within a supplement containing other quantitative data.Considerations for Dataset Development
Procedures(s): ECG-synchronized cardiac CT
View(s): CCTA: Any volumetric imaging dataset
Sex at Birth: {Male, Female}
Age: [15,90]
Body Surface Area: Consider a robust range of BSA
Heart Abnormalities: {Congenital heart disease, ventricular septal defects, congenital heart disease repair, mitral valve replacements}
Contrast Material: {Contrast-enhanced (CCTA), noncontrast enhanced applications}
Technical Specifications
Inputs
DICOM Study
| Procedure | XRAY, Chest |
| Views | AP, PA/Lat, inclination e.g., upright, semi-upright, supine |
| Data Type | DICOM |
| Modality | XRAY |
| Body Region | Chest |
| Anatomic Focus | Lung |
| Pharmaceutical | N/A |
| Scenario | N/A |
Primary Outputs
Cardiac Output
| RadElement ID | |
| Definition | Calculated multiplying LV stroke volume by the heart rate (L/min) |
| Data Type | Numeric |
| Value Set | [0,15] |
| Units | L/min |
Related Datasets
No known related public datasets at this time, please alert us if you know of any.