Carotid arteries: maximizing arterial to venous contrast in fluoroscopically triggered contrast-enhanced MR angiography with elliptic centric view ordering.
Carotid arteries: maximizing arterial to venous contrast in fluoroscopically triggered contrast-enhanced MR angiography with elliptic centric view ordering.
复制标题
颈动脉：通过椭圆中心视图排序，在透视触发对比增强 MR 血管造影中最大化动脉到静脉对比度。
DOI：
10.1148/radiology.211.1.r99ap08265
复制
发表时间：
1999
期刊：
影响因子：
19.7
通讯作者：
Busse,RF
中科院分区：
文献类型：
--
作者：
Huston3rd,J;Fain,SB;Riederer,SJ;Wilman,AH;Bernstein,MA;Busse,RF
目的：通过使用椭圆中心视图排序和MR透视触发，获得颈动脉和主动脉弓的高空间分辨率、静脉抑制、造影剂增强的三维（3D）磁共振（MR）血管成像。材料与方法：对连续40例有鉴别诊断意义的脑血管病患者进行透视触发的3D MR血管造影评估（加多啶多剂量范围，0.1-0.3 mmol / kg体重；平均获取时间，40秒±8 [SD]）。对比增强的3D MR血管造影评估整体质量、血管信号强度、静脉抑制和运动伪影。20例患者还接受了二维（2D）飞行时间（TOF）磁共振血管造影。确定2D TOF MR血管图的整体质量以及2D TOF与增强3D MR血管图的对比质量。结果：40个研究中有36个（90%）的对比增强3D MR血管造影的诊断质量很好或超过足够。在38个造影增强3D研究中，有35个在透视下检测到造影剂丸，颈内静脉信号强度要么无法检测到，要么几乎看不见。在20名同时接受2D TOF MR血管造影的患者中，有18名患者的对比增强3D MR血管造影的质量被评为明显优越或优越。结论：对比增强、椭圆中心三维磁共振血管成像与实时磁共振荧光触发提供颈动脉和主动脉弓的高空间分辨率图像，可靠的静脉抑制。
PURPOSE:To obtain high-spatial-resolution, venous-suppressed, contrast material–enhanced, three-dimensional (3D) magnetic resonance (MR) angiograms of the carotid arteries and aortic arch by using an elliptic centric view ordering with MR fluoroscopic triggering.MATERIALS AND METHODS:Forty consecutive patients with cerebrovascular disease in the differential diagnosis were evaluated with fluoroscopically triggered 3D MR angiography (gadoteridol dose range, 0.1–0.3 mmol per kilogram of body weight; mean acquisition time, 40 seconds ± 8 [SD]). The contrast-enhanced 3D MR angiograms were evaluated for overall quality, vascular signal intensity, venous suppression, and motion artifact. Twenty patients also underwent two-dimensional (2D) time-of-flight (TOF) MR angiography. The overall quality of the 2D TOF MR angiograms and comparative quality between the 2D TOF and contrast-enhanced 3D MR angiograms were determined.RESULTS:The contrast-enhanced 3D MR angiograms were of excellent or more than adequate quality for diagnosis in 36 of the 40 studies (90%). In 35 of the 38 contrast-enhanced 3D studies in which the contrast material bolus was detected fluoroscopically, the internal jugular vein signal intensity was either not detectable or barely visible. In 18 of the 20 patients who also underwent 2D TOF MR angiography, the quality of the contrast-enhanced 3D MR angiograms was graded as markedly superior or superior.CONCLUSION:Contrast-enhanced, elliptic centric 3D MR angiography with real-time MR fluoroscopic triggering offers high-spatial-resolution images of the carotid arteries and aortic arch with reliable venous suppression.