Department of Radiology, All India Institute of Medical Sciences (AIIMS), New Delhi, 110029, India.
Pediatr Radiol. 2011 Mar;41(3):322-6. doi: 10.1007/s00247-010-1833-1. Epub 2010 Oct 15.
Extrahepatic portal vein obstruction (EHPVO) is a common cause of paediatric portal hypertension and the only permanent treatment is shunt surgery. The inferior mesenteric vein (IMV) is a portal venous channel that can be used for the shunt when the splenic vein/superior mesenteric vein is thrombosed or when a lienorenal shunt is not possible.
To compare MDCT venography (MDCTV) and contrast-enhanced MR venography (CEMRV) for visualisation of the IMV in children with EHPVO.
This was a prospective study of 26 children (4-12 years, median 10 years) who underwent MDCTV and CEMRV. The IMV visualisation was graded using 4- and 2-point scales and the difference in visualisation was assessed by calculating the exact significance probability (P).
The IMV was visualised in all children on MDCTV and 25/26 children on CEMRV (96%). The images were diagnostic in 23/26 children (88%) on MDCTV and in 18/26 (69%) children on CEMRV (P=0.063).
MDCTV and CEMRV are comparable for IMV visualisation with a tendency toward MDCTV being superior.
肝外门静脉阻塞（EHPVO）是小儿门静脉高压的常见原因，唯一的永久性治疗方法是分流手术。肠系膜下静脉（IMV）是门静脉通道，当脾静脉/肠系膜上静脉血栓形成或无法进行肝肾分流时，可以用于分流。
比较 MDCT 静脉造影（MDCTV）和对比增强磁共振静脉造影（CEMRV）在 EHPVO 儿童中对 IMV 的显示。
这是一项前瞻性研究，纳入了 26 名（4-12 岁，中位数 10 岁）接受 MDCTV 和 CEMRV 检查的儿童。使用 4 分和 2 分评分系统对 IMV 的显示进行分级，并通过计算精确显著性概率（P）评估显示的差异。
在 MDCTV 上，所有儿童的 IMV 均可见，在 CEMRV 上，26 名儿童中有 25 名（96%）可见。MDCTV 上 23/26 名儿童（88%）的图像具有诊断意义，CEMRV 上 18/26 名儿童（69%）的图像具有诊断意义（P=0.063）。
MDCTV 和 CEMRV 对 IMV 的显示具有可比性，MDCTV 具有一定优势。
