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	Creative Commons 4.0
Status	Published

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.

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}

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	RDE291
Definition	Calculated multiplying LV stroke volume by the heart rate (L/min)
Data Type	Numeric
Value Set	[0,15]
Units	L/min

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