Hình ảnh cộng hưởng từ của các chân và mắt cá

Hình ảnh cộng hưởng từ (MR) của bàn chân và mắt cá chân đang đóng một vai trò ngày càng quan trọng trong chẩn đoán của một loạt các bất thường bàn chân và mắt cá chân, cũng như trong việc lập kế hoạch cho điều trị phẫu thuật của họ. Đối với một nghiên cứu MR tối ưu của bàn chân và mắt cá chân, | Magnetic Resonance Imaging of the Foot and Ankle Michael P. Recht MD and Brian G. Donley MD Abstract Magnetic resonance MR imaging of the foot and ankle is playing an increasingly important role in the diagnosis of a wide range of foot and ankle abnormalities as well as in planning for their surgical treatment. For an optimal MR study of the foot and ankle it is necessary to obtain high-resolution small-field-of-view images using a variety of pulse sequences. The most common indication for MR imaging of the foot and ankle is for the evaluation of tendon and bone abnormalities such as osteomyelitis occult fractures and partial and complete tears of the Achilles tibialis posterior and peroneal tendons. Magnetic resonance imaging has also been shown to be helpful in the diagnosis of several soft-tissue abnormalities that are unique to the foot and ankle such as plantar fasciitis plantar fibromatosis interdigital neuromas and tarsal tunnel syndrome. J Am Acad Orthop Surg 2001 9 187-199 Magnetic resonance MR imaging of the foot and ankle has lagged behind MR imaging of other joints in clinical acceptance and utility because of the complex anatomy of the foot and ankle and the need for small-field-of-view high-resolution images. Recent advances in both hardware and software however have made possible the acquisition of high-resolution images. This feature combined with the degree of soft-tissue contrast that can be achieved with MR imaging and the ability to obtain images in multiple planes has led to the increasing importance of this modality in imaging of the foot and ankle for both diagnosis and surgical planning. It is important that physicians understand the common clinical MR imaging techniques and their role in evaluating disorders of the foot and ankle to most effectively utilize this diagnostic modality. Technique Because of the complex anatomy of the foot and ankle and the small size of many of its structures the acquisition of high-resolution images is .