羊脑包虫病CT、MRI影像特征

doi:10.11843/j.issn.0366-6964.2021.06.027

畜牧兽医学报 ›› 2021, Vol. 52 ›› Issue (6): 1727-1733.doi: 10.11843/j.issn.0366-6964.2021.06.027

羊脑包虫病CT、MRI影像特征

邓威¹, 姚大伟¹, 张壮志², 康强³, 韩涛², 喻昌盛², 郭庆勇⁴, 周程远¹, 杨德吉^1*

1. 南京农业大学动物医学院, 南京 210095;
2. 新疆畜牧科学院兽医研究所, 乌鲁木齐 830013;
3. 新疆阿克苏地区动物疫病控制诊断中心, 阿克苏 843000;
4. 新疆农业大学动物医学学院, 乌鲁木齐 830052

收稿日期:2020-10-16 出版日期:2021-06-23 发布日期:2021-06-22
通讯作者: 杨德吉,主要从事兽医影像诊断学研究,E-mail:djyang@njau.edu.cn
作者简介:邓威(1996-),男,湖南邵阳人,硕士生,主要从事兽医影像诊断学研究,E-mail:dw654224410@126.com,Tel:025-84395505
基金资助:
中央高校基本科研业务费专项资金资助（KYYJ201809）

CT and MRI Imaging Features of Sheep Cerebral Coenurosis

DENG Wei¹, YAO Dawei¹, ZHANG Zhuangzhi², KANG Qiang³, HAN Tao², YU Changsheng², GUO Qingyong⁴, ZHOU Chengyuan¹, YANG Deji^1*

1. College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, China;
2. Veterinary Research Institute, Xinjiang Academy of Animal Sciences, Urumqi 830013, China;
3. Animal Loimia Controlling and Diagnostic Center of Aksu Region, Aksu 843000, China;
4. College of Veterinary Medicine, Xinjiang Agricultural University, Urumqi 830052, China

Received:2020-10-16 Online:2021-06-23 Published:2021-06-22

摘要/Abstract

摘要： 本研究旨在观察羊脑包虫病CT、MRI的特征性影像学表现。选择3只表现出脑包虫病典型症状的新疆细毛羊进行神经学检查及血常规、血清生化检查。对其中2只羊头部进行CT和MRI扫查。最后进行病理剖检，观察病理解剖变化。动物神经学检查发现动物出现眼球震颤，双侧眼睑反射、角膜反射减弱，动物的翻正反应、双侧独轮车反应存在异常；血常规和血清生化检查结果无明显异常；CT影像可见颅内数量不等囊性低密度影，内部CT值与脑脊液相近，边界清晰，有占位效应，囊壁分布大量点状中等到高密度的原头节影像，其余脑组织未见明显异常密度影像。MRI影像可见颅内数量不等囊性病灶，T1WI低信号，T2WI高信号，与脑脊液信号相近，可见沿囊壁分布大量点状T1等信号，T2低信号的原头节影像，病灶周围未见明显异常信号。病理剖检可见充满澄清囊液的寄生虫包囊，内含有数量不等的原头节。寄生虫包囊位置与影像学检查结果一致。结果说明羊脑包虫病具有特征性的CT和MRI影像学表现，影像学诊断方法可准确定位寄生虫包囊数量和位置，显示病灶累及周围组织的情况，有助于手术治疗计划的制定。

关键词: 羊, 脑包虫病, CT, MRI

Abstract: This experiment was conducted to study the CT and MRI features of cerebral coenurosis in sheep. Three Xinjiang fine-wool sheep with typical symptoms of cerebral coenurosis were selected, then neurological examination, blood routine, and serum biochemical examination were performed. CT and MRI examinations were performed on two sheep's heads, and the pathological autopsy was performed on all the sheep after the CT and MRI scan to observe the changes. Results were as follows:1) Neurological examination results showed that all animals had nystagmus, bilateral palpebral reflexes, and corneal reflexes of the animals were weakened, and the animals' righting reactions and bilateral wheelbarrowing reactions were abnormal, and no obvious abnormalities in blood routine and serum biochemical examination were found. 2) In the CT images of the sheep, varying amounts of intracranial cystic hypoattenuating structures with a clear margin can be observed, in which CT values were similar to cerebrospinal fluid (CSF). Mass effect correlated with the hypoattenuating structures can be observed as well, and a large number of punctate isoattenuating or hyperattenuating structures invaginated in clusters on the cyst wall can be seen, which were found to be protoscolices. No obvious abnormal attenuating images in the rest of the brain tissue were found; In the MRI images of the sheep, varying amounts of intracranial cystic lesions can be observed, the cystic lesions were characterized by a high signal on T2WI and low signal on T1WI, being accord with CSF signal. Punctate protoscolices embedded in the cyst wall were iso-signal on T1WI and low signal on T2WI, no perilesional abnormal signal was found. 3) Pathological autopsy revealed parasitic cysts filled with clear cystic fluid, which contained varying numbers of protoscolices, the location of the parasitic cysts was consistent with the imaging findings. These results indicated that sheep cerebral coenurosis has characteristic CT and MRI features. Combing two imaging diagnostic methods can accurately locate the parasitic cysts and show the involvement of the surrounding tissues, which is helpful for veterinarians to make surgery treatment plans.

Key words: sheep, cerebral coenurosis, CT, MRI

中图分类号:

S854.7

邓威, 姚大伟, 张壮志, 康强, 韩涛, 喻昌盛, 郭庆勇, 周程远, 杨德吉. 羊脑包虫病CT、MRI影像特征[J]. 畜牧兽医学报, 2021, 52(6): 1727-1733.

DENG Wei, YAO Dawei, ZHANG Zhuangzhi, KANG Qiang, HAN Tao, YU Changsheng, GUO Qingyong, ZHOU Chengyuan, YANG Deji. CT and MRI Imaging Features of Sheep Cerebral Coenurosis[J]. Acta Veterinaria et Zootechnica Sinica, 2021, 52(6): 1727-1733.

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羊脑包虫病CT、MRI影像特征

CT and MRI Imaging Features of Sheep Cerebral Coenurosis

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