Strotzer M, Fellner C M, Geissler A, Gmeinwieser J, Kohler S M, Krämer B K, Kromer E P
Department of diagnostic Radiology, University Hospital, Regensburg, Germany.
Acta Radiol. 1995 May;36(3):243-7.
The purpose of this study was to evaluate MR angiography (MRA) and color Doppler sonography as noninvasive screening methods in suspected renovascular hypertension. Fifty-five consecutive patients with arterial hypertension were examined prospectively using high resolution 3-D TOF MRA and color Doppler sonography. Intraarterial angiography was the standard of reference. Stenoses of 60% or more were regarded as significant. MR angiograms were evaluated by 3 independent observers who studied 110 main renal arteries. All 8 significant stenoses and 2 occlusions were correctly classified with MRA while one 60% stenosis was underestimated by color Doppler sonography. Mild stenoses were overestimated by MRA in 4 and by color Doppler sonography in 6 cases. A drawback of both methods was the large number of not evaluable arteries (6 in MRA, 11 in color Doppler sonography). These arteries were regarded as pathologic because stenosis could not be excluded. Due to this fact specificities of MRA and color Doppler sonography were 90% and 85% respectively. Accessory vessels were detected in 47% (8/17) by MRA and in 0% (0/17) by color Doppler sonography.
本研究的目的是评估磁共振血管造影（MRA）和彩色多普勒超声作为疑似肾血管性高血压的无创筛查方法。对55例连续性动脉高血压患者前瞻性地使用高分辨率三维时间飞跃法MRA和彩色多普勒超声进行检查。动脉内血管造影是参考标准。60%或以上的狭窄被视为有意义。由3名独立观察者对磁共振血管造影进行评估，他们研究了110条主要肾动脉。所有8例有意义的狭窄和2例闭塞通过MRA均被正确分类，而1例60%的狭窄被彩色多普勒超声低估。MRA高估了4例轻度狭窄，彩色多普勒超声高估了6例轻度狭窄。两种方法的一个缺点是不可评估动脉数量众多（MRA为6条，彩色多普勒超声为11条）。这些动脉被视为病理性的，因为不能排除狭窄。由于这一事实，MRA和彩色多普勒超声的特异性分别为90%和85%。MRA检测到47%（8/17）的副血管，彩色多普勒超声未检测到副血管（0/17）。
