| 双能量颅脑CTA诊断颅内动脉瘤的临床价值 |
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| 引用本文： | 王建,王锡明,段艳华,程召平,乌大尉,邓艳.双能量颅脑CTA诊断颅内动脉瘤的临床价值[J].中国医学影像技术,2011,27(2):261-264. |
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| 作者姓名： | 王建 王锡明 段艳华 程召平 乌大尉 邓艳 |
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| 作者单位： | 1. 山东大学医学院,山东,济南,250012;山东省医学影像学研究所CT诊断研究室,山东,济南,250021
2. 山东省医学影像学研究所CT诊断研究室,山东,济南,250021;山东省心脑血管疾病诊治重点实验室,山东,济南,250021 |
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| 摘 要： | 目的 探讨双能量CT脑血管成像(CTA)诊断颅内动脉瘤的临床价值。方法 对72例临床疑诊颅内动脉瘤的患者行双能量颅脑CTA检查。将原始数据传至后处理工作站进行图像重组,得到MIP、MPR和VR等重组图像,结合原始轴位图像及重组图像进行诊断,并将CTA诊断结果与手术或数字减影血管造影(DSA)进行对照。采用配对t检验比较双能量颅脑CTA与DSA测得的动脉瘤的瘤体长轴、短轴及瘤颈的大小。结果 CTA诊断32例患者共39个动脉瘤,均经DSA检查或手术证实,另有一枚后交通动脉瘤漏诊,诊断符合率达97.50%。双能量颅脑CTA显示脑动脉瘤的瘤体长轴、短轴及瘤颈分别为(7.20±1.69)mm、(4.12±1.68)mm、(3.21±1.60)mm,DSA检测动脉瘤的瘤体长轴、短轴及瘤颈分别为(7.33±1.73)mm、(4.30±1.70)mm、(3.25±1.62)mm,差异无统计学意义(P均>0.05)。结论 双能量颅脑CTA综合各种后处理技术能清晰显示颅内动脉瘤的瘤体大小及瘤颈,是诊断颅内动脉瘤无创、安全、可靠的检查方法。
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| 关 键 词： | 颅内动脉瘤 体层摄影术 X线计算机 血管造影术 数字减影 |
| 收稿时间： | 8/8/2010 12:00:00 AM |
| 修稿时间： | 2010/9/29 0:00:00 |
Clinical value of dual-energy CT cerebral angiography in diagnosis of intracranial aneurysm |
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| WANG Jian,WANG Xi-ming,DUAN Yan-hu,CHENG Zhao-ping,WU Da-wei and DENG Yan.Clinical value of dual-energy CT cerebral angiography in diagnosis of intracranial aneurysm[J].Chinese Journal of Medical Imaging Technology,2011,27(2):261-264. |
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| Authors: | WANG Jian WANG Xi-ming DUAN Yan-hu CHENG Zhao-ping WU Da-wei and DENG Yan |
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| Institution: | Medical School of Shandong University, Jinan 250012, China;Department of CT Diagnosis,;Department of CT Diagnosis,;Shandong Provincial Key Laboratory of Diagnosis and Treatment of Cardio-cerebral Vascular Diseases, Shandong Medical Imaging Research Institute, Jinan 250021, China;Medical School of Shandong University, Jinan 250012, China;Department of CT Diagnosis,;Medical School of Shandong University, Jinan 250012, China;Department of CT Diagnosis,;Department of CT Diagnosis,;Shandong Provincial Key Laboratory of Diagnosis and Treatment of Cardio-cerebral Vascular Diseases, Shandong Medical Imaging Research Institute, Jinan 250021, China;Medical School of Shandong University, Jinan 250012, China;Department of CT Diagnosis, |
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| Abstract: | Objective To explore the clinical value of dual-energy CT angiography (CTA) in diagnosis of intracranial aneurysm. Methods CTA was performed on 72 patients with suspected intracranial aneurysm in dual energy mode. The raw data were obtained and transferred to the workstation (Leonardo, Siemens Medical Solutions) for post processing. The axial images were combined with maximum intensity projection (MIP), multiplanar reformation (MPR), volume rendering (VR) images to make the diagnosis. The results were compared with digital subtraction angiography (DSA) or operation results. The characters of aneurysms measured with CTA and DSA were evaluated with paired-samples t test. Results A total of 39 intracranial aneurysms (32 patients) were discovered with CTA and confirmed by DSA or operation. Totally 40 intracranial aneurysms were discovered with DSA or operation. The accuracy of CTA was 97.50%. Diameter of aneurysm long axis, minor axis and neck by dual-energy CTA was (7.20±1.69)mm, (4.12±1.68)mm, (3.21±1.60)mm, respectively. Diameter of aneurysm long axis, minor axis and neck with DSA was (7.33±1.73)mm, (4.30±1.70)mm, (3.25±1.62)mm, respectively. No statistical difference was found (all P>0.05). Conclusion Dual-energy CTA can show the size and neck of aneurysms clearly. It is a noninvasive, safe and credible method for diagnosis of intracranial aneurysm. |
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| Keywords: | Intracranial aneurysm Tomography X-ray computed Angiography digital subtraction |
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