Oleaga L
Servicio de Radiodiagnóstico, Hospital de Basurto, Bilbao, Spain.
Radiologia. 2007 May-Jun;49(3):157-64. doi: 10.1016/s0033-8338(07)73744-x.
Cardiac function analysis is critical in the management of patients with cardiovascular diseases. The two most common non-invasive techniques used nowadays to evaluate cardiac function are ultrasonography and magnetic resonance imaging (MR). The parameters to be determined with both techniques include the systolic volume of the left ventricle, the cardiac mass, myocardial thickness and ejection fraction. Ultrasound images have high resolution and they do not need any cardiac or respiratory gating. It has limitations in obese patients, patients with pulmonary obstructive disease or patients after thoracic surgery. MR has a high spatial and temporal resolution. There are different sequences we can use to determine cardiac function parameters, Gradient Echo sequences are used to analyze the ventricular volume and the ejection fraction. Myocardial tagging sequences are used to quantify the myocardial wall motion. Computed Tomography constitutes other alternative that can be used in patients with claustrophobia or pace markers to evaluate cardiac function.
心脏功能分析在心血管疾病患者的管理中至关重要。目前用于评估心脏功能的两种最常见的非侵入性技术是超声检查和磁共振成像（MR）。这两种技术要测定的参数包括左心室收缩容积、心脏质量、心肌厚度和射血分数。超声图像具有高分辨率，并且不需要任何心脏或呼吸门控。它在肥胖患者、患有慢性阻塞性肺疾病的患者或胸外科手术后的患者中存在局限性。MR具有高空间和时间分辨率。我们可以使用不同的序列来确定心脏功能参数，梯度回波序列用于分析心室容积和射血分数。心肌标记序列用于量化心肌壁运动。计算机断层扫描是另一种可用于幽闭恐惧症患者或有心脏起搏器的患者来评估心脏功能的方法。
