Computed tomography (CT) is an important cross-sectional diagnostic modality for lameness localised to the equine distal limb. The necessity of general anaesthesia to perform CT scans has limited its use in the equine orthopaedic field. Therefore, many attempts have been made to perform CT of the distal limb in standing horses. This retrospective report aims to describe the technical set-up and the feasibility of using a multi-slice helical CT unit recently introduced into the equine market. The medical records of the patients undergoing a standing CT in the period between March 2019 and January 2020 were reviewed. The imaged anatomical region and the image quality were assessed. Thirty-two horses met the inclusion criteria, and the following anatomical areas have been imaged: front foot/pastern (n = 14), metacarpophalangeal joint (n = 11), front proximal suspensory ligament (n = 2), carpus (n = 2), metatarsophalangeal joint (n = 2) and tarsus (n = 1). In 97% of the cases, excellent imaging quality was obtained. Motion artefact is the main cause of poor image quality. The feet and the metacarpophalangeal region can be easily imaged. Imaging the proximal anatomical regions of the limb is more challenging but achievable.

中文翻译：

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使用多层螺旋扫描仪对马肢体进行站立计算机断层扫描：技术和可行性研究

计算机断层扫描 (CT) 是一种重要的横断面诊断方式，用于定位于马远端肢体的跛行。进行 CT 扫描的全身麻醉的必要性限制了其在马骨科领域的使用。因此，已经进行了许多尝试来对站立马的远端肢体进行 CT 检查。这份回顾性报告旨在描述使用最近引入马市场的多层螺旋 CT 装置的技术设置和可行性。审查了2019年3月至2020年1月期间接受站立CT的患者的病历。评估成像的解剖区域和图像质量。三十二匹马符合纳入标准，对以下解剖区域进行了成像：前足/胸骨（n = 14）、掌指关节（n = 11）、前近端悬韧带 (n = 2)、腕骨 (n = 2)、跖趾关节 (n = 2) 和跗骨 (n = 1)。在 97% 的情况下，获得了出色的成像质量。运动伪影是图像质量差的主要原因。脚和掌指区域可以很容易地成像。对肢体的近端解剖区域进行成像更具挑战性但可以实现。