دانلود کتاب تصویربرداری تشخیصی از پا و مچ پا

It is still basically true that higher field intensity in MRI means higher resolution, and thus better image quality. The advantages of a 3-tesla (3-T) system are obvious, and its ability to depict fine details still has the power to fascinate the observer. The direct visualization of neural structures, tiny fascicles in the ligaments, and especially the hyaline articular cartilage, provides a high confidence level in the detection of pathology. On the other hand, a 3-T system is more susceptible to artifacts than a 1.5-T system in patients with internal fixation materials, and this may be a significant problem at large foot and ankle centers, for example. It should be added that modern 1.5-T MRI systems with multi-channel coil technology can achieve a resolution comparable to that of a 3-T system. The 1.5-T field does involve a more time-consuming protocol, however.