Snaps F R, Saunders J H, Park R D, Daenen B, Balligand M H, Dondelinger R F
Department of Medical Imaging, Faculty of Veterinary Medicine, University of Liège, Belgium.
Vet Radiol Ultrasound. 1998 Nov-Dec;39(6):518-23. doi: 10.1111/j.1740-8261.1998.tb01642.x.
Two comparison studies were performed. In the first conventional spin-echo (T1- and T2-weighted) sequences and a three-dimensional (3-D Fourier transform [3DFT]) echo gradient fast-imaging sequence were compared for imaging the canine normal elbow joint. In all three sequences, there was an isointense signal of the articular cartilage and a hyposignal of the subchondral bone, as compared with the muscles. The medial coronoid process of the ulna was clearly seen on the dorsal plane images, it appeared with a homogenous low-intensity signal. Its articulation with the radius was clearly outlined. In a second study, the 3DFT echo gradient fast-imaging sequence was compared to a fat saturation sequence on normal shoulder and elbow joints. Elbows were imaged with and without injection of saline, in an attempt to show the opposing cartilaginous articular surfaces. This distinction was possible in the shoulder joint but not in the elbow because of insufficient spatial resolution. On the three MRI sequences compared, gradient echo fast imaging with steady-state precession (GE FISP) sequence was found to be the most suitable for imaging the canine elbow joint.
进行了两项对比研究。第一项研究中，对常规自旋回波（T1加权和T2加权）序列和三维（3D傅里叶变换[3DFT]）回波梯度快速成像序列进行了比较，以对犬正常肘关节进行成像。在所有这三个序列中，与肌肉相比，关节软骨呈等信号，软骨下骨呈低信号。尺骨的内侧冠状突在背侧平面图像上清晰可见，呈均匀的低强度信号。其与桡骨的关节清晰勾勒。在第二项研究中，将3DFT回波梯度快速成像序列与脂肪饱和序列在正常肩关节和肘关节上进行了比较。对肘关节在注射盐水和未注射盐水的情况下进行成像，试图显示相对的软骨关节面。由于空间分辨率不足，这种区分在肩关节可行，但在肘关节不可行。在所比较的三个MRI序列中，发现稳态进动梯度回波快速成像（GE FISP）序列最适合对犬肘关节进行成像。
