AI Article Synopsis
- The study aimed to assess the repeatability of aortic annulus CT measurements for TAVR across readers with varying experience levels and evaluate multi-reader approaches to enhance prosthesis sizing.
- A total of 82 CTAs were reviewed by three raters with different experience backgrounds, and their results translated into TAVR size recommendations, while examining the intra- and inter-observer variability.
- Findings showed high reproducibility in aortic annulus measurements, but inter-observer variance was notable; multi-reader strategies significantly improved precision and reduced discrepancies in device size categorization compared to single reader evaluations.
Article Abstract
Objectives: To investigate intra- and inter-observer repeatability of aortic annulus CT measurements for transcatheter aortic valve replacement (TAVR) by readers with different levels of experience and evaluate the impact of different multi-reader paradigms to improve prosthesis sizing.
Methods: 82 TAVR screening CTAs were evaluated twice by three raters with six (R1 = radiologist), three (R2 = 3D-laboratory technician) or zero (R3 = medical student) years of experience. Results were translated into hypothetical TAVR size recommendations. Intra- and inter-observer repeatability between single readers and three different multi-reader paradigms ([A]: two readers, [B]: three readers, or [C]: two readers + an optional third reader) were evaluated.
Results: Intra-observer variability did not differ significantly (range: 50.1-67.8mm2). However, we found significant differences in mean inter-observer variance (p = 0.001). Multi-reader paradigms led to significantly increased precision (lower variability) for scenarios [B] and [C] (p = 0.03, p < 0.05). Compared to single readers, all multi-reader strategies clearly lowered the rate of discrepant device size categorization between repeated measurements (22-26% to 5-10%).
Conclusions: Aortic annulus CT measurements for TAVR are highly reproducible. Multi-reader strategies provide higher precision than evaluations from single readers with different levels of experience and could effectively be implemented with two readers and an optional third reader (Paradigm C) in a clinical setting.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6082406 | PMC |
| http://dx.doi.org/10.1016/j.ejrad.2018.06.003 | DOI Listing |
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Article Synopsis
- The study aimed to assess the repeatability of aortic annulus CT measurements for TAVR across readers with varying experience levels and evaluate multi-reader approaches to enhance prosthesis sizing.
- A total of 82 CTAs were reviewed by three raters with different experience backgrounds, and their results translated into TAVR size recommendations, while examining the intra- and inter-observer variability.
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