Mendes Rubens Peres, Lima Aymara Eduarda de, da Cunha Reginaldo, Bittar Mauricio Jose, Vasconcelos Christian Carlstron, Piñeros Diego Darley Velasquez, Corrêa Rodrigo Romero
Department of Surgery, School of Veterinary Medicine and Animal Science, University of São Paulo, São Paulo, Brazil.
Self-Employed Veterinarian, Horse Dentist Brasil, São Paulo, Brazil.
Vet Radiol Ultrasound. 2025 May;66(3):e70046. doi: 10.1111/vru.70046.
Radiographic examination of the skull is a well-established and indispensable procedure for the diagnostic evaluation of dental and paranasal sinus disorders in horses. Complementary projections make significant contributions to radiographic diagnosis in nasal conchae disorders. This article describes a complementary radiographic projection designed for the evaluation of the conchal sinuses and bullae in horses. Six equine cadaveric heads were used. Specimens were dissected, and openings were created in the ventral and dorsal nasal conchae for the introduction of radiopaque material. The new radiographic projection was named lateral 75° dorsal-lateral ventral oblique view. This projection was obtained with the mandibular rami resting on the imaging plate and the mandible displaced toward the side of interest (partial excursion). The X-ray beam was directed dorsoventrally, slightly angled toward the side of interest (left or right offset mandible dorsoventral view), and centered at an imaginary line connecting the tips of the facial crests. The lateral 75° dorsal-lateral ventral oblique view provided enhanced visualization and allowed correct identification of equine conchal structures. Lateral displacement of the mandible and the 75° angle of inclination to the vertical plane eliminated the superimposition of anatomical structures, facilitating radiographic image interpretation and increasing diagnostic accuracy. This complementary projection is recommended in all cases of sinonasal disorders in horses.
颅骨的放射学检查是马牙科和鼻窦疾病诊断评估中一项成熟且不可或缺的程序。补充投照对鼻甲疾病的放射学诊断有重要贡献。本文描述了一种专门用于评估马鼻甲窦和大泡的补充放射学投照方法。使用了六个马的尸体头部。对标本进行解剖，并在下鼻甲和上鼻甲上开口以引入不透射线的材料。这种新的放射学投照被命名为外侧75°背外侧腹侧斜位视图。获得该投照时，下颌支置于成像板上，下颌骨向感兴趣的一侧移位（部分偏移）。X射线束从背腹方向投射，向感兴趣的一侧轻微倾斜（下颌骨背腹位视图向左侧或右侧偏移），并以连接面部嵴尖端的假想线为中心。外侧75°背外侧腹侧斜位视图提供了更好的可视化效果，并能正确识别马的鼻甲结构。下颌骨的外侧移位和与垂直平面成75°的倾斜角度消除了解剖结构的重叠，便于放射影像的解读并提高了诊断准确性。在马鼻窦疾病的所有病例中都推荐使用这种补充投照方法。
