Volumetric Quantification of Pericardial Effusion on CCTA
| Purpose | Pericardial effusion is difficult to assess and may show inter-observer variability, depending on what location the effusion is measured. |
| Tag(s) | |
| Panel | Cardiac |
| Define-AI ID | 19040033 |
| Originator | Moritz H. Albrecht |
| Lead | Moritz H. Albrecht |
| Panel Chair | Carlo De Cecco |
| Panel Reviewers | Cardiac Panel |
| License | |
| Status | |
| RadElement Set | RDES131 |
Clinical Implementation
Value Proposition
Added value for patients with pericardial effusion, in particular, patients with inflammatory heart disease. Follow-up evaluation of effusion and greater accuracy compared to mere diameter measurements. Furthermore, it is yet not possible in clinical routine to provide the absolute volume of effusion.
Narrative(s)
First patient shows pericardial effusion, however, it is located more adjacent to the RV and not circumferential. The reader is uncertain on how the effusion should be quantified.
Second patient with previous pericarditis and coronary artery disease is scanned sequentially for follow-up. Diameter measurements are not sufficiently accurate to detect dynamics in volume, however, volumetric assessment reveals significant changes.
Workflow Description
The reader detects pericardial effusion, though the effusions seems to have a similar density to water, complicating the quantification. An algorithm is triggered, which analyzes the image and returns the volume of effusion. Algorithm also segments areas of the image consistent with effusion to determine the homogeneity of the effusion and provide some interpretability for the output.
Considerations for Dataset Development
| Age | Varied |
| Sex at Birth | male, female |
| pericardium thickness | varied |
| Spread | global effusion, locaulated effusions |
| Cardiothoracic ratio | varied |
| pulmonary edema | absent, present |
| pericardial lesions | absent, present |
| constrictive pericarditis | absent, present |
Technical Specifications
Inputs
DICOM Study
| Procedure | ECG triggered contrast-enhanced CCTA datasets |
| Views | N/A |
| Data Type | DICOM |
| Modality | CCTA |
| Body Region | Chest |
| Anatomic Focus | Heart |
Primary Outputs
Pericardial effusion volume
| RadElement ID | RDE867 |
| Definition | pericardial effusion volume |
| Data Type | Numeric |
| Value Set | N/A |
| Units | ml |
Average Density of the Effusion
| RadElement ID | RDE868 |
| Definition | average density of the effusion |
| Data Type | Numeric |
| Value Set | N/A |
| Units | HU |