Kim Wha-Young, Kim In-One, Kim Woo Sun, Yeon Kyung Mo, Kim Gwang Il, Lee Sun Wha, Suh Jeong Soo, Choi Hye-Young, Chang Kyu-Jin
Department of Radiology, CHA Hospital, College of Medicine, Pochon CHA University, Korea.
Invest Radiol. 2007 May;42(5):312-8. doi: 10.1097/01.rli.0000258681.14275.19.
To evaluate sonographic findings in ischemic enterocolitis (IEC) and correlate with pathologic findings in an experimental study.
Ischemic enterocolitis was induced with ligation of the superior mesenteric artery in 20 rabbits. Plain radiography and ultrasonography (US) were performed. US was done hourly after the ligation using 10 MHz linear probe. US findings were categorized into 2 groups according to the bowel wall echogenicity; the echogenic dots (ED) group and the circumferential granular echogenicity (CGE) group. US findings were compared with the specimen radiography and the histopathology.
On US, ED were seen in the bowel of all rabbits after SMA ligation (2.2 +/- 1.3 hours [standard deviation]) and CGE in 16 rabbits (4.1 +/- 0.9 hours). On the specimen radiographs, multiple radiolucent air bubbles were present. Comparing the ED and CGE group, histopathological findings revealed the CGE group had severer injury of the bowel wall than the ED group. On plain radiography, there was progressive bowel distention, but pneumatosis intestinalis (PI) was not evident.
ED or CGE are the sonographic findings of ischemic enterocolitis, and bowel wall echogenicity might reflect the degree of ischemic injury.
在一项实验研究中评估缺血性小肠结肠炎（IEC）的超声表现，并将其与病理结果相关联。
对20只兔子进行肠系膜上动脉结扎以诱发缺血性小肠结肠炎。进行了腹部平片和超声检查（US）。结扎后每小时使用10MHz线性探头进行超声检查。根据肠壁回声将超声表现分为两组；点状回声（ED）组和环状颗粒状回声（CGE）组。将超声表现与标本X线片和组织病理学结果进行比较。
超声检查显示，所有兔子在肠系膜上动脉结扎后（2.2±1.3小时[标准差]）肠内均出现点状回声，16只兔子（4.1±0.9小时）出现环状颗粒状回声。标本X线片上可见多个透亮气泡。比较点状回声组和环状颗粒状回声组，组织病理学结果显示环状颗粒状回声组肠壁损伤比点状回声组更严重。腹部平片上可见肠管逐渐扩张，但肠壁积气（PI）不明显。
点状回声或环状颗粒状回声是缺血性小肠结肠炎的超声表现，肠壁回声可能反映缺血损伤程度。
