作者
Ibai Genua, Andy L Olivares, Etelvino Silva, Jordi Mill, Alvaro Fernandez, Ainhoa Aguado, Marta Nuñez-Garcia, Tom de Potter, Xavier Freixa, Oscar Camara
发表日期
2019
研讨会论文
Statistical Atlases and Computational Models of the Heart. Atrial Segmentation and LV Quantification Challenges: 9th International Workshop, STACOM 2018, Held in Conjunction with MICCAI 2018, Granada, Spain, September 16, 2018, Revised Selected Papers 9
页码范围
200-208
出版商
Springer International Publishing
简介
The majority of thrombi in non-valvular atrial fibrillation (AF) patients are formed in the left atrial appendage (LAA). The shape of the LAA is highly variable and complex morphologies seem to favour the development of thrombus since they may induce blood stasis. Nevertheless, the relation between LAA shape and risk of thrombus has not been rigorously studied due to the lack of appropriate imaging data and robust tools to characterize LAA morphology. The main goal of this work was to automatically extract simple LAA morphological descriptors and study their relation with the presence of thrombus. LAA shape characterization was based on the computation of its centreline combining a heat transfer-derived distance map and a marching algorithm, once it LAA was segmented from 3D medical images. From the LAA centreline, several morphological descriptors were derived such as its length, tortuosity …
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I Genua, AL Olivares, E Silva, J Mill, A Fernandez… - Statistical Atlases and Computational Models of the …, 2019