自动移床扫描技术在全下肢MRI中的应用优势

目的探讨自动移床扫描技术在全下肢弥漫性病变MRI中的应用优势。方法使用Philips Achieva1．5T双梯度超导磁共振成像系统，体部正交线圈，XL-16-Torso线圈，自动移床扫描技术，Compose成像拼接软件，对6例弥漫性病变患者进行从骨盆至脚踝的全下肢成像。分析研究所得图像，成像技术等。结果得到的全下肢冠状位、矢状位拼接图像清晰、细腻，四段图像拼接良好，无明显拼接痕迹，能够完整显示弥漫性下肢病变范围及其与周边组织的关系。6例病例中，有线粒体脑肌病3例，多发性肌炎1例，左下肢弥漫陛血管瘤1例，肌肉脂肪变1例。结论利用自动移床扫描技术、Compose成像拼接软件进行全下肢MRI，能够准确定位，一次全面的扫描全部病变，对下肢弥漫性病变的诊断具有重要意义。

Objective To study the application advantages of automatic MobiTrak technique in diffuse lesions of the whole lower extremities MRI. Methods Using Philips Achieva 1.5T dual gradient superconducting magnetic resonance imaging system, body coil, XL-16-Torso coil, automatic MobiTrak technique, compose image stitching software, 6 cases of patients with diffuse lesions were given MRI fi＇om the pelvis to the ankles.Analysis the images, and the imaging technology. Results The coronal and sagittal stitching images of the whole lower extremities were clear and delicate, four images stitched good, and there were no obvious stitching traces. The stitching images can show diffuse lesions range and its relationship with the surrounding tissues. In 6 cases, there were 3 cases of mitochondrial encephalomyopathy, 1 case of multiple myositis, 1 case of left lower extremity diffuse vascular tumor, 1 case of muscle fatty degeneration. Conclusion In the whole lower extremities MRI, using automatic MobiTrak technique and comP9se image stitching sottware, can accurate positioning, scan all lesions one time, so it has important significance in diagnosis of diffuse lesions.