Wu R G, Yang P C, Kuo S H, Luh K T
Department of Internal Medicine, Lotung Poh-Ai Hospital, Taipei, Taiwan, Republic of China.
J Ultrasound Med. 1995 Oct;14(10):767-9. doi: 10.7863/jum.1995.14.10.767.
Color Doppler imaging has been applied traditionally in the evaluation of cardiovascular diseases. Recently it was observed that color signal may appear within the fluid collection in the pleural space during respiratory and cardiac cycles ("fluid color sign"). We performed this applicability of fluid color sign to the detection of pleural fluid capable of being removed to assess needle aspiration. From July 1992 to February 1994, we prospectively analyzed 76 patients who were suspected of having minimal pleural effusion on the basis of their chest radiographs. All patients were examined by color Doppler ultrasonography for the presence of fluid color sign, which was followed by needle aspiration to verify the presence of pleural effusion. Among the 65 patients with aspiratable fluid, 58 demonstrated positive fluid color sign (sensitivity 89.2%). None of the patients with solid pleural thickening showed fluid color sign (specificity 100%). With its relatively high sensitivity and specificity, the fluid color sign may be a useful diagnostic aid to real-time, gray scale ultrasonography for minimal or loculated effusion.
彩色多普勒成像传统上已应用于心血管疾病的评估。最近观察到，在呼吸和心动周期中，胸腔积液内可能会出现彩色信号（“液体彩色征”）。我们对液体彩色征在检测可抽取胸腔积液以评估胸腔穿刺方面的适用性进行了研究。1992年7月至1994年2月，我们前瞻性分析了76例根据胸部X线片怀疑有少量胸腔积液的患者。所有患者均接受彩色多普勒超声检查以确定是否存在液体彩色征，随后进行胸腔穿刺以证实胸腔积液的存在。在65例可抽取液体的患者中，58例显示液体彩色征阳性（敏感性89.2%）。所有胸膜增厚的患者均未显示液体彩色征（特异性100%）。由于其相对较高的敏感性和特异性，液体彩色征可能是实时灰阶超声检查对少量或局限性胸腔积液的一种有用的诊断辅助手段。
