Reliability of semiautomatic centerline analysis versus manual aortic measurement techniques for TEVAR among non-experts
Objectives - The study aimed to test whether reliability and inter-observer variability of preoperative measurements for thoracic endovascular aortic repair (TEVAR) among non-experts are improved by semiautomatic centerline analysis compared with manual assessment. - Methods - Preoperative computed...
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| Hauptverfasser: | , , , , , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
13 May 2011
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| In: |
European journal of vascular and endovascular surgery
Year: 2011, Jahrgang: 42, Heft: 3, Pages: 324-331 |
| ISSN: | 1532-2165 |
| DOI: | 10.1016/j.ejvs.2011.04.019 |
| Online-Zugang: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1016/j.ejvs.2011.04.019 Verlag, lizenzpflichtig, Volltext: https://www.sciencedirect.com/science/article/pii/S1078588411002279 
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| Verfasserangaben: | F. Rengier, T.F. Weber, S. Partovi, M. Müller-Eschner, D. Böckler, H.-U. Kauczor, H. von Tengg-Kobligk |
MARC
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| 245 | 1 | 0 | |a Reliability of semiautomatic centerline analysis versus manual aortic measurement techniques for TEVAR among non-experts |c F. Rengier, T.F. Weber, S. Partovi, M. Müller-Eschner, D. Böckler, H.-U. Kauczor, H. von Tengg-Kobligk |
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| 520 | |a Objectives - The study aimed to test whether reliability and inter-observer variability of preoperative measurements for thoracic endovascular aortic repair (TEVAR) among non-experts are improved by semiautomatic centerline analysis compared with manual assessment. - Methods - Preoperative computed tomography (CT) angiographies of 30 patients with thoracic aortic disease (mean age 66.8 ± 11.6 years, 23 men) were retrospectively analysed in randomised order by one blinded vascular expert (reference standard) and three blinded non-expert readers. Aortic diameters were measured at four positions relevant to TEVAR using three measurement techniques (manual axial slices, manual multiplanar reformations (MPRs) and semiautomatic centerline analysis). Length measurements were performed using centerline analysis. Reliability was calculated as absolute measurement deviation (AMD) from reference standard and inter-observer variability as coefficient of variance (CV) among non-expert readers. - Results - For axial, MPR and centerline techniques, mean AMD was 7.3 ± 7.7%, 6.7 ± 4.5% and 4.7 ± 4.8% and mean CV was 5.2 ± 4.2%, 5.8 ± 4.8% and 3.9 ± 5.4%. Both AMD and CV were significantly lower for centerline analysis compared with axial technique (p = 0.001/0.042) and MPR (p = 0.009/0.003). AMD and CV for length measurements by centerline analysis were 3.2 ± 2.8% and 2.6 ± 2.4%, respectively. Centerline analysis was significantly faster than MPR (p < 0.001). - Conclusions - Semiautomatic centerline analysis provides the most reliable and least variable diameter and length measurements among non-experts in candidates for TEVAR. | ||
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