Link J, Brinkmann G, Steffens J C, Graessner J, Müller-Hülsbeck S, Heller M
Klinik für Radiologische Diagnostik, Christian-Albrechts-Universität Kiel.
Rofo. 1996 Dec;165(6):544-50. doi: 10.1055/s-2007-1015809.
The aim of the study was to assess the value of MR angiography (MRA) in sagittal technique compared to DSA in the evaluation of carotid artery stenosis.
80 carotid arteries in 40 symptomatic patients were prospectively studied with DSA and MRA. MRA was carried out by means of 3 D time-of-flight technique with a FISP sequence (TE6 ms/TR80 ms, flip angle 25 degrees, FOV 240 x 210 mm, matrix 157 x 256 mm, in-plane resolution 1.34 x 0.94 mm, partition thickness 1.32 mm, slab thickness 45 mm, acquisition time 7 min) using a new head-neck coll. Data acquisition was performed in sagittal orientation with the "double-slab" technique. Imaging quality of the extracranial carotid arteries and correctness of quantification of stenosis was performed.
Imaging quality was good at the origin of the carotid arteries in 65%, at the bifurcation region in 98% and near the skull base in 81%. The agreement of DSA and MRA was 96% of the normal arteries (24/25), 90% of the severe stenoses (28/31) and 100% of the occluded arteries (9/9).
MRA in sagittal "double-slab" technique is a noninvasive technique allowing to detect normal arteries and candidates for surgery with a high degree of certainty.
本研究旨在评估与数字减影血管造影（DSA）相比，矢状位技术的磁共振血管造影（MRA）在评估颈动脉狭窄中的价值。
对40例有症状患者的80条颈动脉进行前瞻性DSA和MRA研究。MRA采用3D时间飞跃技术和FISP序列（TE6毫秒/TR80毫秒，翻转角25度，视野240×210毫米，矩阵157×256毫米，平面分辨率1.34×0.94毫米，层厚1.32毫米，层块厚度45毫米，采集时间7分钟），使用新型头颈线圈。数据采集采用“双层块”技术在矢状位进行。评估颅外颈动脉的成像质量以及狭窄定量的正确性。
颈动脉起始部成像质量良好的占65%，分叉区域为98%，颅底附近为81%。DSA和MRA在正常动脉（24/25）中的一致性为96%，重度狭窄（28/31）中为90%，闭塞动脉（9/9）中为100%。
矢状位“双层块”技术的MRA是一种无创技术，能够高度准确地检测正常动脉和适合手术的患者。
