Singson R D, Zalduondo F M
Department of Radiology, Columbia College of Physicians and Surgeons, St. Luke's/Roosevelt Hospital Center, New York, NY 10019.
AJR Am J Roentgenol. 1992 Sep;159(3):569-71. doi: 10.2214/ajr.159.3.1503028.
We performed a study to determine if unenhanced spin-echo MR imaging can be used to differentiate effusion from synovitis of the knee joint.
Unenhanced spin-echo MR imaging examinations of 1051 consecutive patients referred for evaluation of internal derangement of the knees were reviewed. Twelve of 550 knees with significant joint effusion also had thickened or irregular synovium. Of these, the cause of synovitis was proved in 10 patients. In the other two, the cause was unknown.
Thickened synovium was of intermediate signal intensity on T1-weighted MR images compared with the lower signal intensity of joint effusion. In eight cases, the thickened synovium had an intermediate signal intensity on T2-weighted images relative to the high signal of the joint effusion. MR images in the other four cases showed increased signal intensity indistinguishable from that of joint effusion.
Our experience suggests that unenhanced spin-echo MR images can be used to distinguish synovitis from effusion in the knee joint.
我们开展了一项研究，以确定未增强的自旋回波磁共振成像（MR成像）是否可用于鉴别膝关节积液与滑膜炎。
回顾了1051例因膝关节内部紊乱而接受评估的连续患者的未增强自旋回波MR成像检查。550例有明显关节积液的膝关节中，有12例同时存在滑膜增厚或不规则。其中，10例患者滑膜炎的病因得到证实。另外2例病因不明。
与关节积液的低信号强度相比，增厚的滑膜在T1加权MR图像上呈中等信号强度。在8例病例中，增厚的滑膜在T2加权图像上相对于关节积液的高信号呈中等信号强度。其他4例的MR图像显示信号强度增加，与关节积液无法区分。
我们的经验表明，未增强的自旋回波MR图像可用于区分膝关节的滑膜炎与积液。
