非心电图门控增强胸部计算机断层扫描鉴定二尖瓣脱垂。

IF 2 4区 医学 Q3 RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING
Min Ji Son, Eun Ju Chun, Seung Min Yoo, Soo Jeong Lee, Charles S White
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引用次数: 0

摘要

目的:诊断二尖瓣脱垂(MVP)的主要成像方式是超声心动图辅助心电图(ECG)门控心脏计算机断层扫描(CT)血管造影。然而,我们最近遇到的MVP患者最初是在非ecg门控增强胸部CT上发现的。本研究的目的是评估非ecg门控增强胸部CT诊断MVP存在的准确性。患者和方法:92例患者(手术证实MVP,行非心电图门控胸部CT)中,27例患者因运动伪影或手术相关性不足被排除,最终纳入65例患者。作为对照,随机选择呼吸困难且无MVP的患者65例(1个月内进行非心电图门控胸部CT和超声心动图检查)。我们回顾性分析了轴向CT图像上的不对称双线征,以确定MVP的存在。不对称双线标志被定义为存在线性结构,不位于穿过二尖瓣环的平面上。结果:应用非ecg门控CT非对称双线征象预测MVP,灵敏度适中,特异性高,阴性预测值适中,阳性预测值较高,分别为59%(38/65)、99%(64/65)、70%(64/91)和97%(38/39)。结论:非ecg门控增强胸部CT上的不对称双线征可能是预测MVP存在的一个有价值的发现。熟悉这一CT表现有助于及时诊断和正确处理MVP。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Identification of Mitral Valve Prolapse on Non-electrocardiography-gated Enhanced Chest Computed Tomography.

Purpose: The primary imaging modality for the diagnosis of mitral valve prolapse (MVP) is echocardiography supplemented by electrocardiography (ECG)-gated cardiac computed tomography (CT) angiography. However, we have recently encountered patients with MVP who were initially identified on non-ECG-gated enhanced chest CT. The purpose of this study is to evaluate the diagnostic accuracy of non-ECG-gated enhanced chest CT to predict the presence of MVP.

Patients and methods: Of 92 patients (surgically confirmed MVP who underwent non-ECG-gated chest CT), 27 patients were excluded for motion artifact or insufficient surgical correlation, and 65 patients were ultimately included. As a control, 65 patients with dyspnea and without MVP (non-ECG-gated chest CT and echocardiography were performed within 1 month) were randomly selected. We retrospectively analyzed an asymmetric double line sign on axial CT images for the presence of MVP. The asymmetric double line sign was defined as the presence of a linear structure, not located in the plane traversing the mitral annulus.

Results: Use of the asymmetric double line sign to predict MVP on non-ECG-gated CT showed modest sensitivity, high specificity, modest negative predictive value, and high positive predictive value of 59% (38/65), 99% (64/65), 70% (64/91), and 97% (38/39), respectively.

Conclusion: The asymmetric double line sign on non-ECG-gated enhanced chest CT may be a valuable finding to predict the presence of MVP. Familiarity with this CT finding may lead to prompt diagnosis and proper management of MVP.

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来源期刊
Journal of Thoracic Imaging
Journal of Thoracic Imaging 医学-核医学
CiteScore
7.10
自引率
9.10%
发文量
87
审稿时长
6-12 weeks
期刊介绍: Journal of Thoracic Imaging (JTI) provides authoritative information on all aspects of the use of imaging techniques in the diagnosis of cardiac and pulmonary diseases. Original articles and analytical reviews published in this timely journal provide the very latest thinking of leading experts concerning the use of chest radiography, computed tomography, magnetic resonance imaging, positron emission tomography, ultrasound, and all other promising imaging techniques in cardiopulmonary radiology. Official Journal of the Society of Thoracic Radiology: Japanese Society of Thoracic Radiology Korean Society of Thoracic Radiology European Society of Thoracic Imaging.
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