Aortic Valve Analysis

Purpose	Automate aortic valve measurements
Tag(s)
Panel	Cardiac
Define-AI ID	18040019
Originator	Carlo De Cecco
Panel Chair	Carlo De Cecco
Panel Reviewers	Cardiac Panel
License	Creative Commons 4.0
Status	Public Commenting

Value Proposition

Measurement of the aortic valve opening area is an important parameter to assess valve stenosis. Cardiac CT angiography (CCTA) allows for accurate aortic valve morphological and functional assessment. Automated aortic valve area measurement would save the interpreting physician time via elimination of manual measurements, would prevent detection errors, and would provide structured quantitative data, which could be used in later studies or risk-stratification schemes.

Narrative(s)

All patients undergoing CCTA with functional data should have automated quantification of the aortic valve opening area if data are available, which may then be automatically populated into the radiology report or a report supplement.

Workflow Description

A patient receives electrocardiogram (ECG)-synchronized CTA of the chest. An algorithm retrieves input for the imaging data set and relevant electronic medical record data, including age, gender, and body surface area (mL/m2). The algorithm then determines the best single diastolic and single systolic phases of CT with the least motion artifact and performs the measurements defined below on systolic phases. Once the maximum aortic valve opening area is measured, all measurements are returned to the radiologist.

Procedures(s): ECG-synchronized cardiac CT

View(s): CCTA: Any volumetric imaging data set

 

Sex at Birth: {Male, Female}

 

Age: [15,90]

 

History: Aortic stenosis

 

CT: Must be gated with multiple diastolic and systolic phases of the cardiac cycle

 

Contrast material: CT w/ IV arterial-phase contrast

 

Position: {Weight bearing, nonweight bearing}

Inputs

DICOM Study

Procedure	ECG-synchronized cardiac CT
Views	CCTA: Any volumetric imaging data set
Data Type	DICOM
Modality	CT
Body Region	Chest
Anatomic Focus	Heart

Primary Outputs

Best Systolic Phase

RadElement ID	RDE287
Definition	Systolic phase
Data Type	Numeric
Value Set	[0,100]
Units	Percentage of cardiac cycle in systole

 

Best Diastolic Phase

RadElement ID	RDE288
Definition	Diastolic phase
Data Type	Numeric
Value Set	[0,100]
Units	Percentage of cardiac cycle in diastole

 

Aortic Valve Opening Area

RadElement ID	RDE289
Definition	Aortic valve opening area
Data Type	Numeric
Value Set
Units	mm2

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