Roger B, Laval-Jeantet M, Delepine N, Delepine G, Tobolski F
Rev Chir Orthop Reparatrice Appar Mot. 1986;72(4):253-8.
Fourteen patients presenting with a primary bone tumour of the knee have been assessed, in parallel with other imaging techniques, by examination using MRI with surface coils. The first examinations were made before any biopsy was made or chemotherapy given so as not to impair the interpretation of the images and to provide guidance as to the correct site for biopsy. Two sequences were made - a longitudinal sequence made with echo-spin, echo-time = 30 ms, repetition-time = 500 ms, with four impulses and a transverse sequence made with echo-spin, echo-time = 40 ms, repetition-time = 1300 ms with two impulses (+/- multi-echo). Thanks to the excellent spatial resolution using a surface aerial, we have been able to determine not only the intramedullary extent of the tumour and its relationship with healthy muscles and vessels but also, in a much more precise way than previously, evidence of extension to the skin, to the epiphysis, to the articular cartilage and to the synovium, thus allowing an objective assessment to be made of the possibility of a closed block-excision of the joint. A second MRI examination with cranial coil was made pre-operatively at the end of adjuvant chemotherapy to determine the precise progress of the tumour, and in particular, to discover the localisation of the tumour in the femoral and tibial shafts, the investigation being aided by systemic scintigraphy.
对14例患有膝关节原发性骨肿瘤的患者，使用表面线圈的MRI检查并与其他成像技术并行进行评估。首次检查在进行任何活检或给予化疗之前进行，以免影响图像解读，并为活检的正确部位提供指导。进行了两个序列的检查——一个是自旋回波纵向序列，回波时间=30毫秒，重复时间=500毫秒，有四个脉冲；另一个是自旋回波横向序列，回波时间=40毫秒，重复时间=1300毫秒，有两个脉冲（+/-多回波）。由于使用表面天线具有出色的空间分辨率，我们不仅能够确定肿瘤在骨髓内的范围及其与健康肌肉和血管的关系，还能比以前更精确地发现肿瘤向皮肤、骨骺、关节软骨和滑膜的扩展情况，从而能够对关节进行闭合性整块切除的可能性进行客观评估。在辅助化疗结束后，术前使用头颅线圈进行了第二次MRI检查，以确定肿瘤的精确进展情况，特别是发现肿瘤在股骨干和胫骨干中的位置，全身闪烁扫描辅助了这项检查。
