共查询到18条相似文献,搜索用时 93 毫秒
1.
旋转DSA诊断颅内动脉瘤的价值 总被引:6,自引:0,他引:6
目的 研究旋转DSA对颅内动脉瘤的诊断价值。方法 使用荷兰PHILIPS-INTEGRIS V-3000型DSA系统,对20例疑有颅内动脉瘤的蛛网膜下腔出血患者作旋转DSA检查,并与常规DSA检查比较,得到一系列关于动脉瘤的定位,动脉瘤颈的清晰度及血管分支解剖的图象。结果 旋转DSA诊断颅内动脉瘤的20例患者,常规DSA检查发现18例动脉瘤,其中6例(6/18)动脉瘤的载瘤动脉及周围血管解剖关系显示不清,7例(7/18)动脉瘤的颈部显示不清。加摄旋转DSA检查后,动脉瘤的全貌,瘤颈的位置与结构及周围血管分支的解剖关系清晰显示。结论 旋转SA可更好、更清晰的显示动脉瘤的颈部及其周围的血管解剖结构,从而提高了动脉瘤的血管造影诊断价值,为手术提供更为准确的参考价值。 相似文献
2.
3.
目的:评价三维数字减影血管造影(DSA)容积重建在颅内小动脉瘤的诊断价值。方法对129例可疑颅内动脉瘤患者在行弹簧圈栓塞前进行二维DSA和三维容积重建-数字减影血管造影(VR-DSA)检查。结果三维VR-DSA显示105例患者有123枚动脉瘤,24例无动脉瘤。3例患者检测到3枚动脉瘤;12例患者同时检测到2枚动脉瘤;90例患者检测到1枚动脉瘤。所有的动脉瘤的形态在三维VR-DSA上均可清晰显示。二维DSA显示98例患者有110枚动脉瘤,31例无动脉瘤。1例患者检测到3枚动脉瘤;10例患者同时检测到2枚动脉瘤;87例患者检测到1枚动脉瘤。仅65例患者的动脉瘤的形态在二维DSA上可清晰显示。三维VR-DSA发现13例额外动脉瘤,位于颈内动脉(10例,77%),位于前交通动脉(3例,33%)。大脑中动脉与椎基底动脉未发现额外动脉瘤。结论三维容积DSA不仅能清晰显示动脉瘤的大小及形态,而且能检测出二维DSA未检出的动脉瘤,特别是微小动脉瘤。 相似文献
4.
5.
6.
7.
王健 《中外医用放射技术》2007,(1):61-61
旋转DSA功能是大型DSA设备的重要功能之一,在脑血管造影及介入治疗中有很高的实用价值。该方法大大提高了脑血管疾病的病变检出率,同时降低对比剂的使用量,减少了血管痉挛及其它一些负面影响。本文通过回顾总结对旋转DSA在脑血管造影中的临床应用价值进行探讨。 相似文献
8.
目的:与常规DSA比较,评价3D DSA在颅内动脉瘤血管造影诊断中的应用价值。方法:15例蛛网膜下腔出血患者入院3天内均行常规DSA/3D DSA进行检查,分析不同方法对动脉瘤病变的显示情况。结果:15例患者中发现1例烟雾病,动脉瘤患者共10例。常规DSA检出8例,仅极少数病例能明确显示瘤颈形态(2/8)和载瘤动脉与瘤体的关系(1/8)。3D DSA显示病变复杂结构的能力较常规DSA明显提高。10例3D DSA图像都清晰显示了脑动脉瘤瘤体、瘤颈形态及载瘤动脉关系。常规DSA假阳性患者经3D DSA证实为血管扭曲造成。结论:3D DSA可立体、直观地显示颅内动脉瘤及其与空间解剖关系,为手术夹闭和介入治疗方式的选择提供了有价值的影像学信息。 相似文献
9.
目的:比较分析DSA、3D TOF MRA及CT对颅内动脉瘤的诊断价值。方法:30例颅内动脉瘤均经血管造影和手术征实,所有病例均先后作CT、3D TOF MRA及DSA检查,对其影像学特征进行比较研究。结果:DSA显示全部瘤体,呈囊状、梭形局部突出影;3D TOF MRA显示28个动脉瘤(2个假阳性),4个未显示,其显示动脉瘤的敏感性为86.7%,假阳性为6.7%。CT显示瘤体及蛛网膜下腔出血提示动脉瘤者15例,占50%;无异常者8例,占26.7%。结论:DSA仍然是诊断颅内动脉瘤的金标准‘3D TOF MRA虽然是显示颅内动脉瘤的敏感方法之一,但对确定治疗方案价值低于DSA;CT敏感性较差,但可通过显示其间接征象提示动脉瘤。 相似文献
10.
颅内动脉瘤的电子束CT血管造影与DSA对照研究 总被引:3,自引:0,他引:3
目的:评价电子束CT三维血管重建在诊断颅内动脉瘤中的价值与限度。材料和方法:采用ImatronC-150型电子束成像系统,对31例可疑动脉瘤患者进行了EBCTA和DSA对照研究。结果:发现23例共24个动脉瘤,包括3例术后随访病人。EBCTA上发现动脉瘤最小直径为5mm,最大直径为41mm,其中1例DSA阴性,而CTA阳性,EBCTA假阳性1例,假阴性2例。EBCTA诊断动脉瘤的敏感度92.0%,特异度88.9%,准确度91.2%,阳性预测值95.8%,阴性预测值80.0%,同时分析了EBCTA误、漏诊原因。结论:EBCTA能够明确瘤体的部位、瘤颈、载瘤动脉以及与周围邻近结构的关系,是诊断、筛选动脉瘤以及术后随访的有效手段,在某些方面可以替代甚至超过DSA,当病变在DSA上不显影时,CTA不失为一种补充检查方法。MIP和SSD两种重建方法各有优缺点,应该相互补充,综合应用 相似文献
11.
目的:探讨平板DSA三维旋转血管造影(3D-RA)在颅内动脉瘤的诊断和介入治疗中的应用技术。方法:72例患者利用平板DSA行常规全脑血管造影,再行3D-RA,并利用其Integris 3D-RA工作站行三维重组,分析其2D与3DRA对颅内动脉瘤显示的差异。结果:平板DSA常规全脑血管造影检出颅内动脉瘤56个,利用其3D-RA检出动脉瘤76个。结论:3D-RA可显著提高颅内动脉瘤的检出率,应用好3D-RA技术是指导临床诊断和治疗颅内动脉瘤的重要手段。 相似文献
12.
目的 探讨3D DSA在颅内动脉瘤诊断和血管内介入治疗中的临床应用价值.方法 11例蛛网膜下腔出血患者(经CT证实),分别进行常规DSA与3D DSA造影,9例进行血管内介入治疗.结果 常规DSA一般能显示存在动脉瘤病变,极少数能明确显示瘤颈和载瘤动脉的关系.3D DSA能清晰显示颅内动脉瘤瘤体,瘤颈及其与载瘤动脉的关系,显示动脉瘤结构的能力比常规DSA明显提高,提示血管内介入治疗的可行性,并指导制定治疗方案.结论 3D DSA对颅内动脉瘤的诊断和血管内介入治疗具有较高的临床应用价值. 相似文献
13.
14.
颅内动脉瘤DSA检查的显示满意程度分析和最佳体位选择 总被引:1,自引:0,他引:1
目的探讨颅内各部位动脉瘤在不同体位的显示满意程度,以便优化体位设计,增加DSA检查对颅内动脉瘤的显示满意度,从而提高检出率。方法197例全脑血管造影中椎动脉造影时常规摄取正、侧位图像,必要时加摄特殊斜位,颈内(颈总)动脉造影时,常规摄取正、侧、斜位1,必要时加摄特殊斜位,分析所有检出动脉瘤的DSA图像资料,评价各部位动脉瘤在不同体位上显示满意程度的差异。结果197例全脑血管造影共检出颅内动脉瘤85例94个,阳性率为43.15%,后交通动脉瘤最多,共51个,占54.3%。后交通动脉瘤侧位均显示良好,占100%,而前交通动脉瘤斜位1均显示良好,占100%。结论合理选择不同角度的斜位,能更清晰地显示动脉瘤的结构及与周围血管的毗邻关系,提高颅内动脉瘤的显示满意程度和检出率。 相似文献
15.
目的评价三维DSA(3D DSA)技术在脑血管病诊断及治疗中的应用价值。方法对60例患者所做3D DSA影像与传统二维DSA(2D DSA)进行比较,分析颅内动脉瘤及动脉狭窄在3D DSA上的影像表现。结果与2D DSA相比,3D DSA在对动脉瘤显示有优越性;但对脑动脉狭窄的显示无明显差异。结论3D DSA可以充分显示动脉瘤的形态、位置以及周围解剖关系,并可以从剖面观察病变血管内情况,对斑块稳定性的判断有一定优势,在介入治疗过程中具有重要价值。 相似文献
16.
Detection of intracranial aneurysms: multi-detector row CT angiography compared with DSA 总被引:56,自引:0,他引:56
Jayaraman MV Mayo-Smith WW Tung GA Haas RA Rogg JM Mehta NR Doberstein CE 《Radiology》2004,230(2):510-518
PURPOSE: To prospectively compare the effectiveness of multi-detector row computed tomographic (CT) angiography with that of conventional intraarterial digital subtraction angiography (DSA) used to detect intracranial aneurysms in patients with nontraumatic acute subarachnoid hemorrhage. MATERIALS AND METHODS: Thirty-five consecutive adult patients with acute subarachnoid hemorrhage were recruited into the institutional review board-approved study and gave informed consent. All patients underwent both multi-detector row CT angiography and DSA no more than 12 hours apart. CT angiography was performed with a multi-detector row scanner (four detector rows) by using collimation of 1.25 mm and pitch of 3. Images were interpreted at computer workstations in a blinded fashion. Two radiologists independently reviewed the CT images, and two other radiologists independently reviewed the DSA images. The presence and location of aneurysms were rated on a five-point scale for certainty. Sensitivity and specificity were calculated independently for image interpretation performed by the two CT image readers and the second DSA image reader by using the first DSA reader's interpretation as the reference standard. RESULTS: A total of 26 aneurysms were detected at DSA in 21 patients, and no aneurysms were detected in 14 patients. Sensitivity and specificity for CT angiography were, respectively, 90% and 93% for reader 1 and 81% and 93% for reader 2. The mean diameter of aneurysms detected on CT angiographic images was 4.4 mm, and the smallest aneurysm detected was 2.2 mm in diameter. Aneurysms that were missed at initial interpretation of CT angiographic images were identified at retrospective reading. CONCLUSION: Multi-detector row CT angiography has high sensitivity and specificity for detection of intracranial aneurysms, including small aneurysms, in patients with nontraumatic acute subarachnoid hemorrhage. 相似文献
17.
目的探讨磁共振血管成像(MRA)、X线计算机体层摄影血管成像(CTA)在颅内动脉瘤诊断中的价值。方法以数字血管造影(DSA)检查结果为金标准,回顾性分析47例经DSA诊断为颅内动脉瘤患者的MRA、CTA影像资料,对比两者对颅内动脉瘤的检出率及瘤体大小的差异。结果47例DSA诊断颅内动脉瘤52个;MRA诊断42例共检出46个动脉瘤,阳性率为88.5%(46/52);CTA诊断44例共检出49个动脉瘤,阳性率为94.2%(49/52)。二者检出率的差异无统计学意义(P=0.49)。MRA显示瘤体直径为5~23mm,平均(9.72土5.68)mm,而CTA显示瘤体直径为3-25mm,平均(9.85土5.81)mm,瘤体直径的差值无统计学意义(P=0.17)。结论MRA与CTA对颅内动脉瘤诊断无明显差别,临床可根据实际条件选择合适的检查方法,从而达到最佳诊断和治疗的目的。 相似文献
18.
Renal artery aneurysms: diagnosis and surveillance with 3D contrast-enhanced magnetic resonance angiography 总被引:3,自引:0,他引:3
Browne RF Riordan EO Roberts JA Ridgway JP Woodrow G Gough M Moore D Meaney JF 《European radiology》2004,14(10):1807-1812
The use of contrast-enhanced magnetic resonance angiography (CE-MRA) in screening for suspected renovascular disease may result in increased detection of renal artery aneurysms. We report the CE-MRA findings at diagnosis and follow-up in nine hypertensive patients with unsuspected renal artery aneurysms. A search of renal CE-MRAs of suspected renal artery stenosis at two tertiary referral institutions over 5 1/2 years was performed. All patients underwent CE-MRA using a fast spoiled gradient echo technique (TR/TE/flip 5.1–6 ms/1.6 ms/40°), scan matrix 512×196–224, 1 excitation, FOV 400–450 mm×266–360 mm, 32–50 mm×1.5–2 mm interpolated slices. Gadolinium-enhanced 3D images were obtained during breath holding. Images were evaluated and post-processed on a workstation by a single operator. Nine patients with renal artery aneurysms out of a total of 912 cases were found, all involving the main artery or divisions proximal to the renal hilum. Renal arteries distal to the hilum were not consistently visualized. The aneurysm was bilobed in one patient, multilocular in another and unilocular in all others. Severe stenosis of the renal artery proximal to the aneurysm was present in two. Four patients underwent follow-up showing no change in aneurysm size. CE-MRA reliably identifies aneurysms involving the main renal arteries and proximal branches. Once diagnosed, CE-MRA offers a safe, non-invasive modality for surveillance of aneurysm if active intervention is not planned. 相似文献