Standardized Protocol to Analyze Computed Tomography Imaging of Type B Aortic Dissections
Arnoud V Kamman1, Joost A van Herwaarden2, Matteo Orrico3
1Thoracic Aortic Research Center, Policlinico San Donato IRCCS, San Donato Milanese, Italy Department of Vascular Surgery, University Hospital Utrecht, the Netherlands.
Summary
A new protocol for measuring type B aortic dissections shows good repeatability for aortic dimensions and volumes. However, accurately measuring entry tears remains challenging, highlighting the need for standardized methodologies in research.
Area of Science:
- Cardiovascular Imaging
- Thoracic Surgery
- Medical Imaging Analysis
Background:
- Type B aortic dissections require precise dimensional measurements for accurate assessment.
- Variability in measurement techniques hinders comparability across studies.
- Standardization is crucial for reliable data in aortic dissection research.
Purpose of the Study:
- To establish a standardized measurement protocol for type B aortic dissections.
- To enhance the comparability of aortic dimensions reported in scientific literature.
- To evaluate the repeatability of aortic measurements using a proposed protocol.
Main Methods:
- A standard protocol was applied to 15 computed tomography (CT) scans of type B aortic dissections.
- Measurements included true/false lumen diameter and volume, and entry tear characteristics.
- Intra- and interobserver repeatability were assessed using Bland-Altman analysis and Lin's concordance correlation coefficient (LCCC).
Main Results:
- The protocol demonstrated acceptable intra- and interobserver repeatability for aortic diameter and lumen volume measurements.
- Lin's concordance correlation coefficient indicated excellent agreement for diameter and volume.
- Repeatable measurement of entry tear size, location, and number proved difficult, with inconsistent results.
Conclusions:
- The proposed protocol is repeatable for aortic diameter and volume measurements in type B aortic dissections.
- Measuring entry tear characteristics presents significant challenges, yielding less favorable results.
- Increased transparency in measurement methodologies is recommended for future aortic dimension studies.
Keywords:
aortic diametercomputed tomographydescending thoracic aortaentry tearfalse lumengeometryimaginglumen volumethoracic aortic dissectiontrue lumenMore Related Videos
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