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