Standardized Protocol to Analyze Computed Tomography Imaging of Type B Aortic Dissections

Kamman, Arnoud V.; Herwaarden, Joost A. van; Orrico, Matteo; Nauta, Foeke J.H.; Heijmen, Robin H.; Moll, Frans L.; Trimarchi, Santi

doi:10.1177/1526602816642591

Cited by 17 publications

(13 citation statements)

References 35 publications

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“…The CL proved useful for reliable diameter and area measurements. It is argued that a separate FL CL may provide more accurate FL assessment 15 . The CL through the FL may, however, be harder for automated software to generate and clinical application could lead to comparison of an automated TL CL with a manual FL CL.…”

Section: Discussionmentioning

confidence: 99%

“…Previous literature has reported lower variability of total volumetric and FL volumetric assessment in aneurysm and TBAD 15,33 . In these reports, the volumetric assessment was performed by manual or semiautomated delineation of the outer contour of the volumetric segment.…”

Section: Discussionmentioning

confidence: 99%

“…These were respectively defined as 3 mm, 1 cm 2 , and 30 mL, based on clinical expertise and earlier work for type B aortic dissection (TBAD). 15 Intraobserver and interobserver agreement were analyzed using a CCC. 16 CCC values less than 0.90 were considered "poor agreement," between 0.90-0.95 "moderate," 0.95-0.99 "substantial," and >0.99 "almost perfect" as described by Lin et al 17 Continuous data are presented using mean ± SD.…”

Section: Discussionmentioning

confidence: 99%

“…It is argued that a separate FL CL may provide more accurate FL assessment. 15 The CL through the FL may, however, be harder for automated software to generate and clinical application could lead to comparison of an automated TL CL with a manual FL CL. This should in our opinion be avoided, as this will introduce an additional degree of variation to the analysis.…”

Section: Discussionmentioning

confidence: 99%

“…A priori acceptable differences for diameter, luminal area, and volumetric measurements were added to the Bland‐Altman plots. These were respectively defined as 3 mm, 1 cm 2 , and 30 mL, based on clinical expertise and earlier work for type B aortic dissection (TBAD) 15 . Intraobserver and interobserver agreement were analyzed using a CCC 16 .…”

Section: Methodsmentioning

confidence: 99%

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Critical appraisal of multidimensional CT measurements following acute open repair of type A aortic dissection

et al. 2020

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Introduction To identify patients with aneurysmal degeneration of the native aorta following type A aortic dissection (TAAD), reproducible serial measurements of aortic dimensions are critical. We used a systematic workflow for measuring aortic geometry following TAAD, using computed tomography angiography data, and test its reproducibility. Methods The workflow for aortic measurements included centerline generation, luminal diameter, and area measurement at six anatomically defined locations along the aorta and luminal volumetric measurements in the descending aorta. Two independent observers measured the aortic geometry in 20 surgically repaired TAAD patients, preoperatively and at 3 months follow‐up. To test reproducibility, intraobserver and interobserver agreement scores were analyzed using a concordance correlation coefficient (CCC). Results The interobserver agreement scores of the diameter, area, and volumetric measurements in the descending aorta were acceptable. The agreement scores of the area measurements were highest, with CCCs ranging from 0.909 to 0.984. Luminal diameter measurements scored lower than luminal area measurements and were least reproducible at the mid aortic arch (CCC < 0.886). Overall, intraobserver agreement scores were better than interobserver agreement scores (SD of mean difference was 1.89 vs 1.94 for intraobserver vs interobserver diameter measurements, and 0.61 vs 0.66 for area measurements). Conclusion Although overall reproducibility was acceptable in descending aortic measurements, our results show that it remains challenging to reliably measure luminal diameters, compared with areas. To aid identification of early adverse remodeling following acute TAAD, novel two‐ and three‐dimensional measurement techniques are needed that capture locoregional changes in the false lumen and true lumen morphology more accurately.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%