Devos Daniel, Van Langenhove Charlotte, Campens Laurence
Ghent University Hospital, BE.
J Belg Soc Radiol. 2023 Jan 23;107(1):5. doi: 10.5334/jbsr.2974. eCollection 2023.
Bicuspid aortic valve is difficult to detect on standard transverse images.
We aimed to investigate the usefulness of the hammock sign for detection of bicuspid aortic valve.
We retrospectively investigated the usefulness of a newly proposed 'hammock sign' in a population of 45 contrast enhanced computer tomographic studies to discern tricuspid (22) from anatomical bicuspid aortic (23) valves. The gold standard of aortic morphology was the definite diagnosis in the patient's medical file, established by computed tomography, magnetic resonance, or surgery.
Computer tomographic (CT) studies of each aortic morphology were randomly evaluated for the presence of the hammock sign on coronal and sagittal images, by two readers blinded to the diagnosis. Sensitivity for detecting an anatomic bicuspid valve was 86%, and specificity was 100%.
The hammock sign allows for a quick and easy diagnosis of an anatomical bicuspid aortic valve, merely by scrolling through the standard coronal reconstructions of any type of contrast-enhanced thoracic CT study, and regardless of any other findings associated with bicuspid aortic valve. Functional bicuspid aortic valves were not the scope of this study.
在标准横断图像上很难检测出二叶式主动脉瓣。
我们旨在研究“吊床征”对检测二叶式主动脉瓣的有用性。
我们回顾性研究了新提出的“吊床征”在45例对比增强计算机断层扫描研究中的有用性，以区分三尖瓣（22例）和解剖学上的二叶式主动脉瓣（23例）。主动脉形态的金标准是患者病历中的明确诊断，通过计算机断层扫描、磁共振成像或手术确定。
由两名对诊断不知情的阅片者对每种主动脉形态的计算机断层扫描（CT）研究在冠状面和矢状面上是否存在吊床征进行随机评估。检测解剖学二叶式瓣膜的敏感性为86%，特异性为100%。
仅通过浏览任何类型的对比增强胸部CT研究的标准冠状面重建图像，且不考虑与二叶式主动脉瓣相关的任何其他发现，吊床征就能快速、轻松地诊断解剖学二叶式主动脉瓣。功能性二叶式主动脉瓣不在本研究范围内。
