Flow in the Ascending Aorta

Purpose	Automate measurement of flow in ascending aorta.
Tag(s)	#Qp:Qs
Panel	Cardiac
Define-AI ID	18040020
Originator	Benoit Desjardins
Panel Chair	Carlo De Cecco
Panel Reviewers	Cardiac Panel
License	Creative Commons 4.0
Status	Published

                

Clinical Implementation

Value Proposition

Measurement of flow in the ascending thoracic aorta is a well-established clinical parameter that has fundamental diagnostic, therapeutic, and prognostic implications. Cardiac Magnetic Resonance (CMR) allow accurate assessment of flow parameters. Automated aortic flow quantification would save the interpreting physician time via elimination of manual measurements, prevent detection errors, and provide structured quantitative data, which could be used in later studies or risk stratification schemes.

Narrative(s)

All patients undergoing CMR examinations which include flow measurements should have automated quantification of aortic flow if data are available, which may then be automatically populated into the radiology report or a report supplement.

Workflow Description

Patient receives MRI of the chest/heart. Algorithm retrieves aortic flow imaging dataset if present and may ingest additional EMR data such as age, sex, and body surface area. Algorithm executes and calculates values of net flow, flow volume, maximum flow velocity and flow gradient in the ascending thoracic aorta. Algorithm also determines if aliasing is present. Algorithm returns all measurements, which could populate the report (possibly within a supplement containing other quantitative data). Algorithm flags abnormal values.

Considerations for Dataset Development

Procedures(s): MRI, Cardiac

View(s): CMR velocity-encoded phase contrast images, ascending thoracic aorta

 

Sex at Birth: {Male, Female}

 

Body Mass Index: [10,52]

 

Body Surface Area (m²): [1.0,3.5]

 

Aortic diameter (mm): [10,40]

 

Intervention: {Congenital heart disease repair, mitral valve replacements}

 

Disorder: {Congenital heart disease, Ventricular septal defects}

Technical Specifications

Inputs

DICOM Study

Procedure	MRI, Cardiac
Views	CMR velocity-encoded phase contrast images, ascending thoracic aorta
Data Type	DICOM
Modality	MR
Body Region	Chest
Anatomic Focus	Heart

Primary Outputs

Ascending Aortic Flow Rate

RadElement ID	RDE209
Definition	Measurement of net flow volume in the ascending thoracic aorta above the aortic valve
Data Type	Numeric
Value Set
Units	mL/sec

Secondary Outputs

Flow Gradient

RadElement ID	RDE210
Definition	Pressure of aortic flow
Data Type	Numeric
Value Set
Units	Pa

 

Presence of Aliasing

RadElement ID	RDE211
Definition	Presence of aliasing
Data Type	Categoric
Value Set	0-Unknown 1-Aliasing present 2-Aliasing absent
Units	N/A

Related Datasets

No known related public datasets at this time,  please alert us if you know of any.