Dynamic 3D-CT angiography.
Dynamic 3D-CT angiography.
复制标题
动态 3D-CT 血管造影。
DOI：
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复制
发表时间：
2007
期刊：
影响因子：
--
通讯作者：
Fumio Shishido
中科院分区：
文献类型：
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作者：
M. Matsumoto;Namio Kodama;Y. Endo;J. Sakuma;Kyouicm Suzuki;Tatsuya Sasaki;K. Murakami;Kenji Suzuki;T. Katakura;Fumio Shishido
背景和目的
三维CT血管造影（3D-CTA）是一种血管铸型技术，可用于脑部病变和脑血管疾病的诊断。然而，它没有提供关于血流动力学的信息。因此，我们开发了一种新的技术，动态3D-CTA（d3 D-CTA），产生血管的3D图像，并允许评估血流动力学和脑灌注。
方法
我们对12例患者进行了d3 D-CTA; 7例患有脑肿瘤，4例患有动静脉畸形（AVM），1例患有颈颈内动脉闭塞。d3 D-CTA使用64个探测器的多排CT扫描仪进行;参数为0.5 mm切片厚度，每次旋转0.5秒，135 kV和150 mA。以6-7 mL/s的速度注射造影剂（总体积，30-35 mL）;延迟5秒后开始扫描。用容积再现重建生成扫描，并以电影模式显示。
结果
我们成功地获得了所有病例的d3 D-CTA扫描。扫描产生了关于血管结构和血液动力学以及脑灌注状态的3D信息。
结论
d3 D-CTA有助于在3D-CTA图像上采集血管和脑动态血流信息。尽管相对较高的辐射暴露和造影剂注射速度以及其有限的扫描范围，但该技术可用于诊断患有脑肿瘤或脑血管疾病的患者以及用于治疗计划。
BACKGROUND AND PURPOSE
3D-CT angiography (3D-CTA), a vessel-cast technique, is useful in the diagnosis of patients with brain lesions and cerebrovascular disease. However, it provides no information on blood-flow dynamics. Therefore, we developed a new technique, dynamic 3D-CTA (d3D-CTA), that yields 3D images of the vasculature and allows assessment of the hemodynamics and of the cerebral perfusion.
METHODS
We subjected 12 patients to d3D-CTA; 7 had brain tumors, 4 had arteriovenous malformations (AVMs), and 1 presented with cervical internal carotid artery occlusion. d3D-CTA was performed with a multidetector-row CT scanner with 64 detectors; the parameters were 0.5-mm section thickness, 0.5 seconds per rotation, 135 kV, and 150 mA. Contrast medium (total volume, 30-35 mL) was injected at 6-7 mL/s; scanning was started after a 5-second delay. Scans were generated with volume-rendering reconstruction and displayed in cine mode.
RESULTS
We succeeded in obtaining d3D-CTA scans in all cases. The scans yielded 3D information on the vascular structures and hemodynamics and on the status of the cerebral perfusion.
CONCLUSION
d3D-CTA facilitates the acquisition of information on the vascular and cerebral dynamic blood flow on 3D-CTA images. Despite the relatively high radiation exposure and contrast injection speed and its limited scan range, this technique is useful for the diagnosis of patients with brain tumors or cerebrovascular disease and for treatment planning.
上腹区域 3T 动态 3D MR 血管造影
DOI：
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发表时间：
2008
期刊：
影响因子：
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作者：
Nakamura;K.;Akimoto;T.;et. al.;内田政史;内田政史
通讯作者：
内田政史