Lee Namsoon, Won Sungjun, Choi Mihyun, Kim Junyoung, Yi Kangjae, Chang Dongwoo, Choi Mincheol, Yoon Junghee
Department of Veterinary Medical Imaging, College of Veterinary Medicine, Seoul National University, Seoul, 151-742.
Vet Radiol Ultrasound. 2012 Mar-Apr;53(2):174-80. doi: 10.1111/j.1740-8261.2011.01892.x.
Three different doses (1.0, 1.5, and 2.0 ml) of iohexol (300 mgl/ml) were injected percutaneously into the popliteal lymph node of eight adult cats under ultrasound guidance. Serial transverse CT images of five regions of interest (L3, T13, T8, T4, and T1 level) were performed at 2-min intervals, and the attenuation in Hounsfield Units (HU) of the lymphatic vessels was measured for determination of the optimal dose of iohexol and CT scan parameters. The optimal dose was 1.5 ml and helical CT acquisition is recommended to be performed as soon as possible after iohexol injection. In helical scans, the thoracic duct was characterized by variable branch numbers that formed a single trunk and entered the venous system at variable levels. CT lymphography using this protocol was performed in a cat with chylothorax. The thoracic duct was tortuous and focally dilated, and leakage of contrast medium was observed. Percutaneous CT lymphography using ultrasound-guided administration of iohexol into the popliteal lymph node appears reliable for delineation of the thoracic duct in cats.
在超声引导下，将三种不同剂量（1.0、1.5和2.0毫升）的碘海醇（300毫克/毫升）经皮注射到八只成年猫的腘淋巴结中。以2分钟的间隔对五个感兴趣区域（L3、T13、T8、T4和T1水平）进行连续横向CT图像扫描，并测量淋巴管的亨氏单位（HU）衰减，以确定碘海醇的最佳剂量和CT扫描参数。最佳剂量为1.5毫升，建议在注射碘海醇后尽快进行螺旋CT采集。在螺旋扫描中，胸导管的特点是分支数量可变，形成单一主干，并在不同水平进入静脉系统。使用该方案对一只患有乳糜胸的猫进行了CT淋巴造影。胸导管迂曲且局部扩张，并观察到造影剂渗漏。经皮超声引导下将碘海醇注入腘淋巴结进行CT淋巴造影，对于描绘猫的胸导管似乎是可靠的。
