Imakita S, Onishi Y, Hashimoto T, Motosugi S, Kuribayashi S, Takamiya M, Hashimoto N, Yamaguchi T, Sawada T
Department of Radiology, National Cardiovascular Center, Suita-city, Osaka, Japan.
AJNR Am J Neuroradiol. 1998 Feb;19(2):291-5.
Our goal was to evaluate the utility of subtraction three-dimensional CT angiography for the detection of intracranial aneurysms.
Thirty-six patients with intracranial aneurysms were examined using newly devised controlled-orbit helical scanning and conventional angiography. Three-dimensional CT angiograms and subtraction 3-D CT angiograms were compared with conventional angiograms for their characterization of intracranial aneurysms.
Fifty aneurysms were depicted on conventional angiograms, of which 48 (96%) were seen on the 3-D CT angiograms. Three-dimensional CT angiography was superior or equivalent to conventional angiography for depicting the shape, direction, and location of 33 (66%) of 50 aneurysms; however, it was often less useful than conventional angiography in delineating intracranial aneurysms adjacent to bone. Subtraction 3-D CT angiograms were obtained in 32 patients with a total of 46 aneurysms (in four cases, aneurysms were not depicted owing to excessive motion artifacts), and were superior or equivalent to conventional angiograms in all 46 cases.
Subtraction 3-D CT angiography with the use of controlled-orbit helical scanning is effective in the detection of intracranial aneurysms.
我们的目标是评估减影三维CT血管造影术在检测颅内动脉瘤方面的效用。
对36例颅内动脉瘤患者使用新设计的可控轨道螺旋扫描和传统血管造影术进行检查。将三维CT血管造影和减影三维CT血管造影与传统血管造影在颅内动脉瘤的特征描述方面进行比较。
传统血管造影显示50个动脉瘤，其中48个（96%）在三维CT血管造影中可见。三维CT血管造影在描绘50个动脉瘤中33个（66%）的形状、方向和位置方面优于或等同于传统血管造影；然而，在描绘靠近骨骼的颅内动脉瘤时，它通常不如传统血管造影有用。32例患者获得了减影三维CT血管造影，共46个动脉瘤（4例因运动伪影过多未显示动脉瘤），在所有46例中均优于或等同于传统血管造影。
使用可控轨道螺旋扫描的减影三维CT血管造影术在检测颅内动脉瘤方面是有效的。
