Abstract
Background Pre-procedural TAVI planning requires highly sophisticated and time-consuming manual measurements performed by experienced readers. Semi-automatic software may assist with partial automation of assessment of multiple parameters. The aim of this study was to evaluate differences between manual and semi-automatic measurements in terms of agreement and time. Methods One hundred and twenty TAVI candidates referred for the retrospectively ECG-gated CTA (2nd and 3rd generation dual source CT) were evaluated. Fully manual and semi-automatic measurements of fourteen aortic root parameters were assessed in the 20% phase of the R-R interval. Reading time was compared using paired samples t-test. Inter-software agreement was calculated using the Intraclass correlation coefficient (ICC) in a 2-way mixed effects model. Differences between manual and semi-automatic measurements were evaluated using Bland-Altman analysis. Results The time needed for evaluation using semi-automatic assessment (3 min 24 s +/- 1 min 7 s) was significantly lower (p<0.001) compared to a fully manual approach (6 min 31 sec +/- 1 min 1 sec). Excellent inter-software agreement was found (ICC = 0.93 +/- 0.0; range: 0.90-0.95). The same prosthesis size from manual and semi-automatic measurements was selected in 92% of cases, when sizing was based on annular area. Prosthesis sizing based on annular short diameter and perimeter agreed in 99% and 96% cases, respectively. Conclusion Use of semi-automatic software in pre-TAVI evaluation results in comparable results in respect of measurements and selected valve prosthesis size, while necessary reading time is significantly lower.
Original language | English |
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Article number | e0199732 |
Number of pages | 15 |
Journal | PLOS ONE |
Volume | 13 |
Issue number | 6 |
DOIs | |
Publication status | Published - 28 Jun 2018 |
Keywords
- MULTIDETECTOR COMPUTED-TOMOGRAPHY
- HIGH-RISK PATIENTS
- ANNULAR ASSESSMENT
- REPLACEMENT TAVR
- PROSTHESIS
- STENOSIS
- REGURGITATION
- DISEASE
- MDCT
- Transcatheter Aortic Valve Replacement
- Humans
- Middle Aged
- Male
- Tomography, X-Ray Computed
- Preoperative Care
- Aorta/diagnostic imaging
- Aged, 80 and over
- Adult
- Female
- Aged
- Software
- Aortography