Department of Radiology and Diagnostic Imaging Faculty of Medicine, Dentistry University of Alberta 8440 112 St. NW Edmonton, Alberta, Canada.
Medical Imaging Consultants, Edmonton, Alberta, Canada.
Br J Radiol. 2019 Dec;92(1104):20190506. doi: 10.1259/bjr.20190506. Epub 2019 Aug 8.
Tc-MDP-single photon emission computed tomography (SPECT)/CT has established itself as a useful modality in the assessment of the painful foot and ankle, owing to its ability to depict anatomical and functional information simultaneously. Despite its growing popularity, much of the literature describing the utility of Tc-MDP-SPECT/CT of the foot and ankle is limited to osseous and articular pathology, with descriptions of ligamentous pathology limited to just a handful of cases. Though assessment of soft tissues using a combination of bone tracer and CT is limited, with a sound understanding of the regional anatomy, it is certainly within the scope of Tc-MDP-SPECT/CT to accurately identify ligamentous injuries based on focal tracer uptake patterns and suspected ligamentous injuries should be reported as such. This article provides a case-based pictorial review of the Tc-MDP-SPECT/CT appearances of the various ligamentous injuries of the foot and ankle with case examples and MRI correlation where available, most of which have yet to be described. The typical patterns of bone tracer uptake and associated CT abnormalities that may be observed are discussed.
锝-亚甲基二膦酸盐单光子发射计算机断层扫描（SPECT）/CT 已成为评估足部和踝关节疼痛的有用方法，因为它能够同时描绘解剖和功能信息。尽管它越来越受欢迎，但描述足部和踝关节锝-亚甲基二膦酸盐 SPECT/CT 应用的文献大多仅限于骨骼和关节病理学，对韧带病理学的描述仅限于少数病例。尽管使用骨示踪剂和 CT 联合评估软组织的效果有限，但如果对区域解剖结构有充分的了解，那么根据放射性示踪剂摄取模式准确识别韧带损伤肯定在锝-亚甲基二膦酸盐 SPECT/CT 的范围内，如果怀疑有韧带损伤，应报告为疑似损伤。本文提供了一个基于病例的足部和踝关节各种韧带损伤的锝-亚甲基二膦酸盐 SPECT/CT 表现的图片回顾，包括病例示例和有条件的 MRI 相关性，其中大多数尚未被描述。讨论了可能观察到的放射性示踪剂摄取和相关 CT 异常的典型模式。
