呼吸触发B-TFE序列在门静脉成像中的初步应用

Balanced turbo field echo portal venography: preliminary results

目的探讨呼吸触发B-TFE序列在门静脉系统成像的应用价值。方法使用呼吸触发B-TFE序列,对40例病例进行门静脉系统成像,冠状位,使用呼吸触发技术,不使用对比剂。所有病例均在近期进行了双功多普勒超声检查,并和B-TFE门静脉成像结果进行比较。检查的内容包括:门静脉主干、门静脉右支、门静脉左支、肠系膜上静脉和脾静脉以及可能出现的侧支循环情况。结果呼吸触发B-TFE序列门静脉成像准确地显示了本组全部病例的门静脉系统情况;呼吸触发B-TFE门静脉成像结果和双功多普勒超声结果相关性良好,且具有一定的优势。结论呼吸触发B-TFE序列门静脉成像技术可以在不使用对比剂情况下准确地评价门静脉系统情况。

Objective To evaluate the feasibility of the balanced turbo field echo （B-TFE） sequence to perform magnetic resonance venography of the portal venous system without contrast material or breath holding. Methods 40 patients underwent MR venography with the B-TFE technique （B-TFE/portal）. Coronal three-dimensional images were obtained with respiratory triggering. Contrast media and respiratory suspension were not used. All patients had recently undergone Doppler ultrasonography within one week, and these findings were correlated with those from MR venography. The portal system evaluated included the main portal vein （MPV）, right portal vein （RPV）, left portal vein （LPV）, superior mesenteric vein （SMV） and splenic vein （SV）. Results MR venography with B-TFE accurately depicted the status of the portal venous system in all cases, therefore, MR venography with B-TFE findings were correlated with those from Doppler ultrasonography. Conclusion MR venography with B-TFE accurately depicted the portal venous system in all patients without respiratory suspension or contrast media.