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犬急性水肿型胰腺炎MRI多序列扫描及增强扫描的影像特征

YUAN Yue,HE Chuqiao,SHU Zongtao,SHI Chaoying, LI Xiaokun,YANG Deji,YAO Dawei

Acta Veterinaria Et Zootechnica Sinica（2023）

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Abstract
探究犬胰腺磁共振成像(magnetic resonance imaging,MRI)扫描序列总结归纳犬急性水肿型胰腺炎(acute edematous pancreatitis,AEP)的MRI影像表现.选用10只成年本地杂种犬为研究对象,手术经副胰管逆行注入牛磺胆酸钠与胰蛋白酶混合液建立犬急性水肿型胰腺炎模型,然后进行MRI扫描.MRI多序列扫描图像主观与客观分析结果显示,门控采集快速自旋回波T2加权成像(FSE-T2WI-TRIG)序列与门控采集脂肪抑制快速自旋回波T2加权成像(FSE-T2WI-FS-TRIG)序列评分较高,可作为犬胰腺首选MRI扫描序列,必要时可进行造影增强扫描.FSE-T2WI-TRIG、FSE-T2WI-FS-TRIG序列AEP表现为胰腺体积呈弥散性增大,外形不规则,胰腺实质T2WI信号呈不均匀增高,强度高于同层肝组织信号.胰腺与周围脂肪界限稍有不清,胰腺周围伴有渗出,呈条片状T2WI高信号.造影后胰腺实质不均匀强化,平均强化峰值时间为注射造影剂后60～90 s,存在明显延迟强化.研究结果表明,本研究筛选的MRI扫描序列可用于临床上犬AEP的检查,同时AEP的MRI影像表现可为临床上犬AEP的诊断提供重要的依据.
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Key words
acute edematous pancreatitis in canines,magnetic resonance imaging,multi-sequence scanning,enhancement scan
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