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首页> 外文期刊>Journal of Digital Imaging >Automatic Detection of Bronchial Dilatation in HRCT Lung Images
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Automatic Detection of Bronchial Dilatation in HRCT Lung Images

机译：HRCT肺图像中支气管扩张的自动检测

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摘要

Bronchiectasis is an airway disease caused by the dilatation of the bronchial tree, and a bronchovascular pair is formed between a bronchus and a vessel. An abnormal bronchovascular pair is one that has a larger bronchus compared to its accompanying vessel. Typically, bronchi and vessels running perpendicular to the plane of section appear as near-circular rings on computed tomography (CT) scans. This paper describes BV_pairs, a system capable of detecting abnormal bronchovascular pairs in high-resolution CT scans of sparse datasets using a three-stage process: (1) detection of potential bronchovascular pairs, (2) detection of discrete pairs, where there exists no ambiguity as to the artery that accompanies a bronchus, and (3) identification of abnormal pairs with severity levels. The system was evaluated at every stage. The automated scoring for the presence and severity of bronchial abnormalities was demonstrated to be comparable to that of an experienced radiologist (i.e., kappa statistics κ > 0.5). In addition, BV_pairs was also evaluated on images containing honeycombing regions, since honeycombing cysts appear very similar to bronchi, and the system could successfully differentiate honeycombing cysts from bronchi.
机译：支气管扩张是由支气管树扩张引起的气道疾病，在支气管和血管之间形成支气管血管对。支气管血管异常对与其支血管相比具有更大的支气管。通常，在计算机断层扫描（CT）扫描中，垂直于截面平面延伸的支气管和血管表现为近圆形环。本文介绍了BV_pairs，这是一种能够通过三步过程在稀疏数据集的高分辨率CT扫描中检测异常支气管血管对的系统：（1）检测潜在的支气管血管对，（2）检测不存在的离散支气管对。支气管附带动脉的模棱两可，以及（3）确定严重程度不正常的配对。在每个阶段对系统进行评估。事实证明，对支气管异常的存在和严重程度的自动评分与经验丰富的放射科医生相当（即，κ统计κ> 0.5）。此外，还对包含蜂窝区域的图像评估了BV_pairs，因为蜂窝囊肿看起来与支气管非常相似，并且该系统可以成功地将蜂窝囊肿与支气管区分开。

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