摘要
目的探讨16层螺旋CT血管成像(CTA)在颅内动脉瘤诊断中的价值。方法对临床疑诊为颅内动脉瘤16例患者行CTA检查,其中8例同期行数字减影血管造影(DSA)检查。原始图像重建采用最大密度投影(MIP)和容积再现技术(VR)。结果16例患者经CTA检出动脉瘤17个。1例患者为多发动脉瘤(2个),15例为单发动脉瘤。瘤体以圆形或卵圆形居多(13个),也可以显示为肾形(2个)、葫芦形(1个)和串蛛状(1个)。瘤体最大直径18mm,最小直径1.5mm。8例行DSA检查的患者中,7例DSA所见与CTA结果一致,1例DSA漏诊1个动脉瘤。结论16层CTA检出动脉瘤准确率高,快速、无创,可以作为诊断动脉瘤首选影像学方法,尤其适合于急诊情况下,并能补充DSA诊断信息。
Objective;To evaluvate the 16-slice spiral CT angiography （CTA） in the diagnosis of intracranial aneurysm. Methods： 16 patients with clinically suspected intracranial aneurysm were evaluated by 16-slice spiral CTA,8 cases underwent digital subtraction angiography （DSA） simultaneously. Maximal intensity projection （MPR） and volume rendering （VR） images were obtained by reconstruction. Resalts： Of the 16 patients, 17 aneurysms were detected by CTA. One patient had multiple （n= 2） and the others had solitary aneurysm. The aneurysms were mainly round or oval in shape （n= 15）, the others were bean shape （n=2） ,rosary shape and gourd shape for one case each. The largest one was 18ram and the smallest one was 1.5mm in diameter. Of the 8 patients having DSA,the DSA findings were the same as that of CTA in 7 patients; in one patient, the aneurysm was missed by DSA. Condnsion; 16-slice spiral CT angiography is an accurate, rapid and noninvasire method for detecting intracranial aneurysm, especially in the emergency situation, some additional important information can be provided for DSA.
出处
《放射学实践》
2007年第1期21-23,共3页
Radiologic Practice
