共查询到18条相似文献,搜索用时 62 毫秒
1.
2.
脑膜瘤的数字减影血管造影和术前栓塞 总被引:3,自引:0,他引:3
脑膜瘤患者行数字减影血管造影及术前栓塞已成为脑膜瘤诊治的重要手段之一。对于颅底部位较大的脑膜瘤和累及静脉窦的脑膜瘤,多行DSA检查。其血管造影成像特点是呈放射状影像,其供血动脉多为颅内外的脑膜支。术前栓塞可使脑膜瘤变小、变软、血供减少,因此,可使手术时间缩短,术中出血减少,减少由于牵拉和操作脑组织而引起的对脑组织的损伤。应用的栓塞剂多为多聚乙醇(polyvinyl alcohol,PVA)颗粒,直径多为255-350μm,目的是栓塞肿瘤的血管床而非仅仅栓塞肿瘤的供血动脉。只要避开颅内外危险吻合和颅内正常分支,脑膜瘤的术前栓塞是安全有效的。 相似文献
3.
4.
消化道出血的数字减影血管造影诊断和栓塞治疗 总被引:5,自引:1,他引:4
消化道出血是临床常见病和多发病。随着临床医学和医学影像的发展 ,消化道出血的常用诊断方法有 :纤维电子内镜、全消化道造影和小肠气钡造影、核素显像、吞线试验等[1,2 ] 。上述方法虽各有特色 ,但选择性数字减影血管造影不仅可明确病变的部位和性质 ,而且可对病变血管行栓塞治疗[1,3,4 ] 。我们对 9例难治性消化道出血行DSA诊断 ,并对其中 7例进行了栓塞治疗 ,现就其疗效作一分析。材料和方法本院消化科和普外科 1995年 11月至 1999年1月收治各种难治性消化道出血 9例 ,男 8例 ,女 1例 ,年龄 2 5~ 71岁 ,平均 4 2岁。选用美国OEC … 相似文献
5.
6.
7.
Moyamoya病数字减影血管造影的诊断价值 总被引:5,自引:0,他引:5
目的评价数字减影血管造影(DSA)对Moyamoya病分期诊断的价值。方法对31例患者的DSA检查进行了回顾性分析。结果31例DSA显示不同程度的颈内动脉分叉处血管狭窄或闭塞以及侧支循环;并根据Suzuki分期对31例患者57个大脑半球病变进行了分期:属于Ⅰ期病变者有4个大脑半球,Ⅱ期10个,Ⅲ期17个,Ⅳ期12个,Ⅴ期6个和Ⅵ期8个。结论DSA可清晰显示Moyramoya病血管狭窄的程度、闭塞部位及侧支循环的情况,并作出分期,从而可指导临床及早选择手术治疗。 相似文献
8.
9.
三维数字减影血管造影影像在颈动脉狭窄血管内治疗中的价值 总被引:13,自引:0,他引:13
目的 评价三维数字减影血管造影(3D DSA)在颈动脉狭窄血管内治疗中的价值。方法 对138例缺血性脑血管病颈动脉的3D DSA与二维(2D)DSA图像进行比较,分析颈动脉的形状、狭窄的显示、血管内治疗的必要性、血管内治疗的工作角度及支架的选择。结果 与2D DSA相比,3D DSA能更清晰显示颈动脉狭窄的形状及程度,能提供最佳血管内治疗的工作角度,使用3D DSA能正确决策支架的选择。结论 3D DSA在颈动脉狭窄血管内治疗中具有重要的价值,能提供许多2D DSA不能提供的有价值信息,对常规DSA是一种有益的补充。 相似文献
10.
11.
U. Fink U. Eberwein P. Kohz M. Pleier T. Hilbertz K. H. Englmeier 《European radiology》1994,4(1):33-38
On the basis of our first experiences, a purchasable angiography system for peripheral angiography with dynamic subtraction and stepping (DPSA) has been developed. This study reports on the optimization of this technique and the first clinical results in comparison with conventional screen-film angiography and digital subtraction angiography (DSA) in single steps. For each method, 25 angiograms were interpreted to compare the image quality, the radiation exposure, the contrast medium and the film consumption as well as the examination time. Image quality proved to be comparable in DPSA and DSA in single steps. Both techniques showed better results than conventional angiography, especially in the region of the knee and lower leg. Using DPSA radiation exposure dropped by a factor of 2 compared with conventional angiography and by a factor of 6 compared with DSA in single steps. Consumption of contrast medium can also be reduced in comparison with the other two methods. Film consumption is incomparably higher in conventional screen-film angiography. With DPSA the examination time can be reduced by half on average compared with the other two methods. DPSA may come to be the standard in peripheral angiography.
Correspondence to: U. Fink 相似文献
12.
Malonnie L. Kinnison M.D. Stephen L. Kaufman Richard Chang Saadoon Kadir Sally E. Mitchell Robet I. White Jr. 《Cardiovascular and interventional radiology》1986,9(2):106-108
Venography to evaluate the patency of upper-extremity veins was performed with digital subtraction angiography (DSA) and conventional
angiography. Venous thrombosis was easily diagnosed, and the innominate veins and superior vena cava were more easily visualized
using DSA. Iodine concentration for DSA was one-third that of conventional venography, and the examination time was reduced
by 50% using DSA. Patient comfort and acceptance were greater with DSA. DSA is a superior technique for upper-extremity vein
evaluation in cooperative patients. 相似文献
13.
目的 通过64层螺旋CT的CT血管造影(CTA)及CT数字减影血管造影(CTDSA)技术与数字减影血管造影(DSA)的比较研究,评价64层螺旋CT在颅内动脉瘤诊断中的临床应用价值。方法 26例临床怀疑颅内动脉瘤的患者实施64层CT和DSA检查,对64层CT图像进行了CTA和DSCTA两种方式的后处理。CTA后处理技术包括容积再现(VR),最大密度投影(MIP)和多平面重建(MPR),在CTA图像基础上用增强数据逐层减去平扫数据,自动去除骨与脑组织,获得CTDSA影像。比较3种技术(DSA、CTA和CTDSA)的特征。结果 26例可疑患者中,DSA和CTDSA发现31个动脉瘤,CTA发现29个动脉瘤。CTA漏掉的2个动脉瘤,直径小于3mm。结论 CTDSA是检查颅内动脉瘤的高度敏感的影像学方法,具有与DSA相当的价值。 相似文献
14.
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
15.
Yu-Qing Liu M.D. Jian Ling Zu-Liang Wang 《Cardiovascular and interventional radiology》1990,13(2):83-87
Aorto-arteritis is one of the commonest vascular diseases in China as well as in Japan and other parts of Asia. The results
of digital subtraction angiography (DSA) in 50 patients with aortoarteritis are reported, and the merits and demerits of intravenous
(IV) DSA in the diagnosis of this entity are evaluated. Among the 51 studies performed on 50 patients, IV DSA was used in
48, intraarterial (IA) DSA in 3, and good-to-excellent visualization was obtained in 96% of patients. Aorto-arteritis of varying
severity and involving the thoraco-abdominal aorta, the iliac arteries, and other major branches was clearly demonstrated
by IV DSA. IV DSA, as compared to our previous experience with conventional arteriography in this entity, may be substituted
for conventional arteriography in most patients. A large dose of contrast media needed for a complete study is a major deficiency
of IV DSA, and it also has limitations for showing the intrarenal arterial branches. 相似文献
16.
CTA减影在颅内动脉瘤诊断中的应用价值 总被引:15,自引:2,他引:13
目的:评价CT血管造影(CTA)减影术在颅内动脉瘤诊断中的应用价值。方法:采用CT血管造影检查拟诊颅内动脉瘤33例,图像分别运用A(经减影后)及B(常规)进行两次三维(3D)成像:最大密度投影(MIP)、表面遮盖成像(SSD)、容积重建(VR)。以手术或随访为标准评价两种检查结果;由两位有经验的神经外科医生、两位放射科医生双盲法评价图像质量。结果:A法检出动脉瘤36个(三例患者为多发动脉瘤),显示瘤体、瘤颈、载瘤动脉和周围血管的关系清晰、确切。B法检出动脉瘤31个,漏检1个大脑前动脉瘤2、个前交通动脉瘤、2个颈内动脉瘤。A法的检出率为100%,B法的检出率为86%。两者检出率经χ2检验有统计学意义。结论:CTA减影3D成像对颅内动脉瘤的诊断优于常规3D。 相似文献
17.
旋转式三维数字减影血管造影在脑动脉瘤临床诊断和治疗中的应用价值 总被引:3,自引:0,他引:3
目的:探讨旋转式三维数字减影血管造影在脑动脉瘤诊断和治疗中的应用价值,提高诊断水平,增强治疗效果。方法:回顾性分析了213例脑动脉瘤患者的二维、三维数字减影脑血管造影的影像学资料,并对其结果进行了对比分析。结果:213例患者中共检出222枚脑动脉瘤,其中囊性动脉瘤197枚,梭形动脉瘤16枚,夹层动脉瘤9枚;在222枚脑动脉瘤中,小型动脉瘤105枚,中型动脉瘤89枚,大型动脉瘤22枚,巨大型动脉瘤6枚。常规DSA清楚显示的有205枚,17枚显示可疑由三维数字减影脑血管造影进一步证实;对138例脑动脉瘤患者进行手术开颅银夹夹闭治疗,19例进行介入性金属微弹簧圈栓塞治疗。结论:旋转式三维脑血管造影可有效提高脑动脉瘤的诊断准确性和多种治疗方法的安全十牛及疗效。 相似文献
18.
Diana F. Guthaner M.D. William R. Brody B. Douglas Lewis Gary S. Keyes Barry F. Belanger 《Cardiovascular and interventional radiology》1983,6(4-6):290-294
The clinical application of hybrid subtraction in digital fluoroscopy of the vasculature is reported in our first 30 patients
studied. Hybrid subtraction combines the advantages of temporal and dual energy subtraction techniques to achieve simultaneous
elimination of overlying bone, soft tissue, and motion induced artifacts. Hybrid subtraction improved the subjective appearance
of an image in 19 of 30 (63%) studies but additional diagnostic information was only revealed in 11 of 30 (37%) patients.
This study was supported in part by the General Electric Company Medical Systems Division and the National Heart, Lung, and
Blood Institute (Contract #HV-02922) 相似文献