![]() ![]() Routine thigh and leg MR imaging protocols at our institution include a combination of T1W, T2W, and short tau inversion recovery (STIR) sequences. Select axial T1-weighted (T1W) images are displayed to depict anatomical structures to best advantage, and allow the reader to conceptualize relevant anatomy while emphasizing compartmental organization. MR imaging of a healthy volunteer was performed on a 3T MR imaging unit (Siemens, Erlangen, Germany). This will serve as a basic foundation for accurate evaluation of the many pathologic processes that may involve the thigh and leg. In this article, focus is placed on depicting normal anatomy at representative levels throughout the thigh and leg, describing and providing rationale for routine imaging protocols, and discussing frequently encountered anatomical variants and imaging pitfalls. Careful attention should be focused on awareness of commonly encountered anatomic variants and diagnostic pitfalls to improve diagnostic accuracy and avoid misinterpretation. ![]() This knowledge can then be applied to one’s understanding of pathology commonly encountered in the area of interest. The purpose of this article is twofold: (1) depict normal MR anatomy throughout the thigh and leg using representative MR images, emphasizing a compartmental approach and (2) describe and explain the rationale of standard imaging protocols.ĭeveloping a solid understanding of basic magnetic resonance imaging (MR imaging) principles and musculoskeletal imaging protocols, as well as the appearance of normal imaging anatomy, is crucial to interpret musculoskeletal MR imaging examinations at a diagnostic level. The superb image quality facilitates learning normal imaging anatomy, which ultimately forms the foundation of diagnostic interpretation. Magnetic resonance (MR) imaging is the modality of choice for evaluating the soft tissues of the thigh and leg because of its superior soft tissue contrast resolution, multiplanar imaging capability, and lack of ionizing radiation.
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