Treatment of intracranial aneurysms with hydrogel coated expandable coils

BACKGROUND: Coiling of intracranial aneurysms with platinum coils sometimes results in relatively poor angiographic results which may be is related to low packing volumes achieved. Hydrogel coated expandable coils (HydroCoil) have been shown to achieve better aneurysm volume filling which may potentially result in lower recanalization rates. Currently there is limited clinical data on their safety and efficacy in aneurysm treatment. METHODS: We analyzed data from a prospectively collected database on patients treated at the Toronto Western Hospital. The analysis included the patients' characteristics, aneurysm size, packing, procedure related complications, recanalization and clinical outcome. RESULTS: Twenty-nine aneurysms were treated with HydroCoils only or in combination with other coils. The average calculated filling of the aneurysm volume was 74-76%. On the immediate post treatment angiograms, 44% of the berry type aneurysms were completely obliterated, 33% had a residual neck and, in 20%, a residual aneurysm was seen. Follow-up imaging was available in 23 cases. On imaging follow-up (from 2 days to 11 months) one dissecting aneurysm had recanalized. There were six technical/medical complications with no clinical consequences. Two clinically significant procedural related complications occurred. CONCLUSIONS: HydroCoils can be used effectively to treat intracranial aneurysms. The volume expansion allows for much greater packing than described for bare platinum coils, which may result in better long-term results. The recanalization rate is low but the limited follow-up does not allow for any conclusion regarding the long-term outcome. The complication rate is similar to larger current series using bare platinum coils.     

Direct evidence of hypertension and the possible role of post-menopause oestrogen deficiency in the pathogenesis of berry aneurysms

Summary To determine the significance of hypertension in the pathogenesis of berry aneurysms, 113 patients with subarachnoid haemorrhage (SAH) and verified aneurysm and 63 patients with SAH without aneurysm were compared. Of those patients with angiographically verified aneurysms, 61.9% were found to have elevated blood pressure (>160/95 mmHg) and 19.5% showed electrocardiographic signs of left ventricular hypertrophy (SV1+RV5 (6) >3.5 mV). The percentages for patients without aneurysm were 36.5% and 6.4% respectively. A significant correlation was found between anterior aneurysms and left ventricular hypertrophy (P<0.01). The mean Sokolow index values were also significantly elevated in cases of aneurysm (P<0.01). There was a complementary relationship between the extent of left ventricular hypertrophy and the percentage of females with regard to localization of an aneurysm and age group. The predominance of females in the total aneurysm population, in the 50- to 59-year-old age group, and among patients with internal carotid aneurysms indicates that a sex-specific hormonal factor may also play a role in the pathogenesis of aneurysms in addition to hypertension. The collagen wasting commonly observed in bone and skin in the post-menopausal period due to decreased oestrogen levels could possibly be responsible for the formation of aneurysms in the proximal segments of the cerebral arteries, as occurs in various connective tissue diseases.     

Cerebral aneurysms and polycystic kidney disease: a critical review.

The pathogenic basis of the association between adult polycystic kidney disease (APKD) and cerebral aneurysms is unknown. We have compared cerebral aneurysms in 79 patients with APKD gleaned from the literature to the sporadic aneurysm cases reported by the Cooperative Study to determine if there are significant biological differences between these two groups. Sixty-eight patients had a single aneurysm and 11 (14%) had multiple aneurysms. In APKD patients with subarachnoid hemorrhage from a single aneurysm there was a significant over-representation of males (72%, p less than 0.01); and the APKD group had more aneurysms of the middle cerebral artery (37%, p less than 0.05). The peak decennial incidence and mean age of rupture of APKD-associated aneurysms was younger (mean age 39.7 years, p less than 0.01) and over 77% of APKD-associated aneurysms had ruptured by age 50 versus 42% for sporadic aneurysms (p less than 0.001). Cerebral aneurysms co-existed with APKD in the absence of hypertension in 25% of 45 cases where the presence or absence of hypertension was recorded. These biological differences and the occurrence of aneurysms in normotensive APKD patients suggests an etiology which may be independent of hypertension and that APKD-associated aneurysms may be genetically determined. It is hypothesized that cases of inherited, familial cerebral aneurysms could be linked to a genetic defect resembling that which occurs on chromosome 16 in APKD.     

Ruptured Saccular Aneurysm Arising from Fenestrated Proximal Anterior Cerebral Artery : Case Report and Literature Review

The aneurysm arising from fenestrated proximal anterior cerebral artery (ACA) is considered to be unique. The authors report a case of a 59-year-old woman who presented with a subarachnoid hemorrhage (SAH) secondary to a ruptured aneurysm originating from the fenestrated A1 segment of right ACA. The patient had another unruptured aneurysm which was located at the right middle cerebral artery bifurcation. She was successfully treated with surgical clipping for both aneurysms. From the previously existing literatures, we found 18 more cases (1983-2011) of aneurysms associated with fenestrated A1 segment. All cases represented saccular type of aneurysms, and 79% of the patients had SAH. There were three subtypes of the fenestrated A1 aneurysms depending on the anatomical location, relative to the fenestrated segment. The most common type was the aneurysms located on the proximal end of fenestrated artery (82%). Azygos ACA and hypoplastic A1 were frequently accompanied by the aneurysm (33% and 31%, respectively), and multiple aneurysms were shown in three cases (16%). Considering that fenestrated A1 segment is likely to develop an aneurysm, which has high risk of rupture, early management may benefit patients with aneurysms accompanied by fenestrated proximal ACA.     

Intraoperative microvascular Doppler ultrasonography in cerebral aneurysm surgery

OBJECTIVES: Outcome of surgical treatment of cerebral aneurysms may be severely compromised by local cerebral ischaemia or infarction resulting from the inadvertent occlusion of an adjacent vessel by the aneurysm clip, or by incomplete aneurysm closure. It is therefore mandatory to optimise clip placement in situ to reduce the complication rate. The present study was performed to investigate the reliability of intraoperative microvascular Doppler ultrasonography (MDU) in cerebral aneurysm surgery, and to assess the impact of this method on the surgical procedure itself. METHODS: Seventy five patients (19 men, 56 women, mean age 54.8 years, range 22-84 years) with 90 saccular cerebral aneurysms were evaluated. Blood flow velocities in the aneurysmal sac and in the adjacent vessels were determined by MDU before and after aneurysm clipping. The findings of MDU were analysed and compared with those of visual inspection of the surgical site and of postoperative angiography. Analysis was also made of the cases in which the clip was repositioned due to MDU findings. RESULTS: A relevant stenosis of an adjacent vessel induced by clip positioning that had escaped detection by visual inspection was identified by Doppler ultrasonography in 17 out of 90 (18.9%) aneurysms. In addition, Doppler ultrasound demonstrated a primarily unoccluded aneurysm in 11 out of 90 (12.2%) patients. The aneurysm clip was repositioned on the basis of the MDU findings in 26 out of 90 (28.8%) cases. In middle cerebral artery (MCA) aneurysms, the MDU results were relevant to the surgical procedure in 17 out of 44 (38.6%) cases. Whereas with aneurysms of the anterior cerebral artery significant findings occurred in only five of 32 cases (15.6%; p<0.05). The clip was repositioned on the basis of the MDU results in 18 out of 50 (36%) aneurysms in patients with subarachnoid haemorrhage (SAH) grade I-V compared with only eight out of 40 (20%) aneurysms in patients without SAH (p<0.05). CONCLUSIONS: MDU should be used routinely in cerebral aneurysm surgery, especially in cases of MCA aneurysms and after SAH. Present data show that a postoperative angiography becomes superfluous whenever there is good visualisation of the "working site" and MDU findings are clear.     

Intracranial aneurysms presenting with ischemic stroke

PURPOSE: To report four cases of patient with an acute ischemic event as a presenting symptom of a berry aneurysm. PATIENTS AND METHODS: One male and three female (aged range 38 to 65 years) patients were admitted for acute stroke. The neuroradiologic finding disclosed aneurysm thrombosis, inferior to twenty five millimetres in three cases. Lumbar puncture was done in one case and showed subarachnoid haemorrage. DISCUSSION: We will discuss the hypothesis leading to the mechanism of aneurysm thrombosis. Two theories will be presented: "hemodynamic" and "parietal" modifications. We will propose a management protocol for these patients with atypical presentation of intracranial aneurysms given the potential risk of rupture. CONCLUSION: The natural history of intracranial aneurysms is still not fully understood. Nevertheless, aneurym thrombosis may occur and lead to ischemic stroke.     

PROGNOSTIC FACTORS IN RUPTURED ANEURYSMS OF THE CIRCLE OF WILLIS: THE SIGNIFICANCE OF SYSTEMIC HYPERTENSION

The incidence of essential hypertension has been retrospectively studied in a group of sixty-four fatal cases of ruptured berry aneurysm, and compared with a non-fatal group. Hypertension is more frequent in the fatal group, and is associated with a higher incidence of multiple aneurysms, a smaller size of aneurysm at rupture and a poorer survival after two haemorrhages when comparison is made with normotensive patients. The possible role of hypertension in the development and rupture of aneurysms is discussed, and it is concluded that it may contribute to both. Following rupture it carries a poor prognosis with a resulting over emphasis of its significance in autopsy series. Possible mechanisms for this effect include diffuse vascular disease, and an increased liability to oedema or spasm following rupture of an aneurysm.     

Cerebral aneurysms causing visual symptoms: their features and surgical outcome

Cerebral aneurysms causing visual symptoms before surgery are relatively rare. We have experience with 17 cases of such aneurysms and report their clinical features and surgical outcome. The locations of aneurysms presenting with visual dysfunction in our series are as follows: internal carotid (IC)-cavernous aneurysms in six of 29 total cases, 21%; IC-ophthalmic aneurysms in nine of 36 total cases, 25%; and anterior communicating artery (A com A) aneurysms in two of 217 total cases, 1%. The size of the aneurysms, the period between the onset of symptoms and surgical treatment, the pre- and post-operative visual function, and the surgical methods used to treat the aneurysm were analyzed. All the visually symptomatic cases featured large (15–24 mm) or giant (>25 mm) aneurysms. Visual symptoms occurred before aneurysmal rupture in all cases but one. The type of visual field defect and the degree of reduced visual acuity were highly variable, without a typical clinical presentation. Five out of six IC-cavernous aneurysms were treated surgically with common carotid artery (CC) ligation or IC ligation with superficial temporal artery (STA) to middle cerebral artery (MCA) anastomosis. Three of these cases showed improvement of visual symptoms after surgery. Six out of nine IC-ophthalmic aneurysms were treated surgically (CC ligation or direct clipping), with four cases showing improvement of visual symptoms after surgery. One case of an A com A aneurysm featured a ruptured aneurysm that had physically penetrated the optic chiasm, while the other case was a giant unruptured aneurysm. The interval between the onset of symptoms and surgical treatment was the only factor identified which affected the clinical outcome of the aneurysms presenting with visual dysfunction. All cases that were determined to show improvement of visual function were treated surgically within 3 months of the onset of symptoms. Cerebral aneurysms presenting with visual dysfunction before surgery are most commonly large or giant, and unruptured. Recovery of visual function can most often be expected when surgical treatment is performed expeditiously, before the visual dysfunction becomes irreversible.     

床突旁颈内动脉瘤的手术治疗

探讨床突旁动脉瘤的分型，以及各型的手术特点，以提高该动脉瘤的手术疗效。回顾性分析ｐ－ＩＣＡＡ１８例，其中颈眼动脉型７例；垂体上动脉型７例；颈内动脉腹侧型４例。手术方法包括动动脉瘤夹闭术１３例交；动脉瘤孤立术３例；夹闭＋包裹术２例；颈总动有吉轧＋动脉瘤包裹１例。     

Risk of subarachnoid hemorrhage after surgical treatment of unruptured cerebral aneurysms.

BACKGROUND AND PURPOSE: Recent progress in noninvasive imaging techniques has resulted in increased detection of unruptured aneurysms. Although many neurosurgeons advocate surgical intervention for such unruptured aneurysms, the long-term results of surgery for unruptured aneurysms have not been carefully investigated. METHODS: We analyzed 173 consecutive patients who had unruptured intracranial saccular aneurysm(s) detected by angiography that was performed for reasons other than subarachnoid hemorrhage (SAH). Of those, 115 cases were surgically treated and studied. All patients were followed up for either SAH, repeat treatment of aneurysms, or death. The median follow-up period was 8.8 years. RESULTS: Four of the 115 patients suffered SAH either from a de novo aneurysm (2) or from regrowth of clipped aneurysm (1), or from regrowth after wrapping (1). Additionally, 1 patient also suffered SAH from an unstudied basilar aneurysm. One patient was incidentally found to have de novo aneurysm and underwent reoperation 14 years after the first operation. The cumulative risk for SAH for the 114 cases excluding the basilar aneurysm case was 1.4% in 10 years and 12.4% in 20 years. CONCLUSIONS: Although this study confirmed the long-term efficacy of clipping unruptured aneurysms, the risk of SAH was high compared with that in the general population, even after treatment. Considering the high mortality rate of SAH, long-term follow-up by angiography may be warranted for patients with surgically treated unruptured aneurysms.     

Diagnosis of cerebral arterial aneurysms in acute and subacute subarachnoid hemorrhage

The paper pools experience in using computed tomographic and magnetic resonance angiographies in patients with intracranial berry aneurysms in different periods following subarachnoid hemorrhage. The new low-invasive techniques for visualization of arterial vessels have been found to detect the aneurysm and to define its topographic and anatomic location in most cases (as high as 90%) by being on a par with direct cerebral angiography and to compare favourably with the latter. Based on the analysis of complex studies (angiography, CT- and MR-angiographies), the authors have developed algorithms for diagnosing intracranial aneurysms by the stage of subarachnoid hemorrhage.     

Relation between age and number of aneurysms in patients with subarachnoid haemorrhage

BACKGROUND: Because age and the presence of atherosclerosis are risk factors for the presence of aneurysms, the presence of multiple aneurysms may also increase with age. Familial preponderance is another risk factor for the presence of aneurysms. Familial subarachnoid haemorrhage (SAH) occurs at an earlier age than sporadic SAH, and a higher frequency of multiple aneurysms has been suggested in familial SAH. This may imply that the multiplicity of aneurysms is associated with younger age. We studied the relation between age and the number of aneurysms in patients with SAH. METHODS: From our database we selected patients with aneurysmal SAH admitted between 1985 and 1999. Inclusion criteria were: (1) both carotid and vertebral arteries had been visualised; (2) at least one aneurysm was found, and (3) admission within 72 h after onset of symptoms. For the 555 patients included we recorded the age, sex and number of aneurysms. The patients were categorised into patients with a single aneurysm, patients with more than one aneurysm and those with more than two aneurysms. For all categories we calculated the proportion of patients younger than the median age and the differences between these proportions, with corresponding 95% confidence intervals (CI). We also calculated relative risks (RR) of multiple aneurysms for gender and age below the median. RESULTS: 485 patients had a single aneurysm, and 70 patients had more than one aneurysm. The proportion of patients younger than the median age (51 years) with one aneurysm was 47.8%, for more than one aneurysm 61.4% (difference 13.6%; 95% CI 1.4-25.8), and for more than two aneurysms 82.6% (difference 34.8%, 95% CI 18.7-50.9). The RR of women for multiple aneurysms was 1.52 (95% CI 0.61-3.77), and that of age below the median 4.86 (95% CI 1.68-14.1). CONCLUSIONS: Patients with multiple aneurysms are younger than patients with a single aneurysm. This may suggest that atherosclerotic risk factors are less important than genetic factors in the development of multiple aneurysms.     

73例颅内动脉瘤术中破裂的处理体会

目的　探讨动脉瘤术中破裂的对应措施。方法　在控制性低血压下按动脉瘤的解剖特点游离动脉瘤。一旦破裂出血 ,可临时夹闭载瘤动脉 ,或在破裂口处压以涂上医用生物胶的一小块明胶海绵封闭破裂口 ,出血控制后稳妥地夹闭瘤颈。结果　 73例中 6 8例行动脉瘤颈夹闭术。其余 5例 ,分别行囊壁切除动脉修补术、瘤体切除术及颈内动脉血管重建术。治愈率为 93.2 % ,病死率 6 .8%。结论　按动脉瘤的解剖特点游离动脉瘤是控制动脉瘤术中破裂出血的前提 ;有预见性地采用控制性低血压和暂时阻断载瘤动脉或用涂以医用生物胶的小块明胶海绵封闭破裂口是术中控制动脉瘤破裂出血的重要应急措施。     

儿童颅内动脉瘤的临床特征及治疗

目的 探讨儿童颅内动脉瘤的发病特点、影像学特征及其治疗策略.方法 对宣武医院神经外科及神经介入中心1985年10月至2008年5月共23例14岁以下(含14岁)儿童的24个颅内动脉瘤的发病方式、部位、大小等影像学特点、治疗方式及其结果进行回顾性分析.结果 儿童颅内动脉瘤占所有年龄组颅内动脉瘤的1.3%,男:女=1.56:1;24个动脉瘤中,16个位于前循环,8个位于后循环;14个属于复杂动脉瘤;以蛛网膜下腔出血为表现者11例;14例采用神经介入治疗,4例采用显微手术治疗,5例未行外科治疗,其中2例在随访过程中动脉瘤及载瘤动脉自行闭塞而自愈;1例死亡,1例因术前动脉瘤再破裂导致中度致残,其余21例结果良好.结论 (1)儿童颅内动脉瘤较为罕见,发病率男性高于女性;(2)颈内动脉及大脑中动脉是儿童颅内动脉瘤的好发部位;(3)与成人相比,巨大动脉瘤、夹层动脉瘤及后循环动脉瘤、感染或外伤性动脉瘤比例较高;(4)神经介入及显微手术都是治疗儿童颅内动脉瘤的有效方法,但对于复杂动脉瘤首选神经介入治疗,相当一部分动脉瘤甚至不得不采用载瘤动脉闭塞的方法治疗.     

Intracranial aneurysms in children under 1 year of age: a systematic review of the literature

OBJECTIVE: Intracranial aneurysms are very rare in early childhood. Because the location, morphology as well as the clinical and radiological presentation of these aneurysms seem to be different from those in adults, we performed a systematic review of the literature to discuss the clinical, morphological, and radiological features of intracranial aneurysms in the first year of life. MATERIALS AND METHODS: A computerized search of both Pubmed and EMBASE from before 1966 to 2005 was performed. Included were all articles that dealt with cases in which an intracranial aneurysm was demonstrated in children under 1 year of age. RESULTS: We found 110 articles in which 131 cases of an intracranial aneurysm in children under 1 year were presented. The mean age at diagnosis of the aneurysm was 4.9+/-3.5 months with a male to female ratio of 1.1. There was a hemorrhagic presentation in 73% (n=96). The patients presenting with a hemorrhage were younger (mean 4.3 vs 6.7 months, P<0.001) and tended to have smaller-sized (i.e.<2.5 cm) aneurysms (P=0.07). The aneurysm was defined as traumatic or infectious in 15 and 13 cases, respectively. In 21% (n=27), there was various vascular or congenital co-morbidity. In 76%, the aneurysm was located in the anterior circulation. The prevalence of aneurysms on the middle cerebral artery (MCA) was nearly three times higher than on any other vessel. The mean aneurysm size was 1.8+/-1.4 cm, with 30 giant aneurysms (>2.5 cm). The giant aneurysms were significantly more often located in the posterior circulation (43 vs 16%, P=0.01). The mean period of follow-up was 13.6+/-24.8 months. The Glasgow Outcome Scale (GOS) could be derived in 106 cases: 50% had an excellent outcome (GOS of 5). CONCLUSIONS: The presentation of arterial aneurysms in children under the age of 1 year differs from that in adults with a significantly higher prevalence of giant aneurysms in the posterior circulation. The prevalence of aneurysms on the MCA is nearly three times higher than on any other vessel. The patients presenting with a hemorrhage were younger and tended to have smaller-sized aneurysms. Our study did not confirm the male predominance that has thus far been associated with pediatric aneurysms. The outcome is comparable or slightly better than in adults.     

介入栓塞治疗不同直径颅内动脉瘤的临床效果观察

目的 观察介入栓塞治疗对不同直径颅内动脉瘤的临床效果及安全性。方法 回顾性分析本院在2015年8月-2017年1月收治的87例颅内未破裂动脉瘤患者的临床资料,根据动脉瘤直径不同分为小型动脉瘤组(瘤体直径≤3 mm)41例,中大型动脉瘤组46例,均行介入栓塞治疗; 比较2组患者栓塞效果、并发症、复发率及预后。结果 术后6个月小型动脉瘤组完全栓塞率为100%,中大型动脉瘤组完全栓塞率为91.30%(42/46),动脉瘤瘤颈残留3例(6.52%),动脉瘤腔残留1例(2.17%),2组比较无明显差异(P>0.05); 小型动脉瘤组单纯弹簧圈栓塞16例,支架辅助弹簧圈栓塞25例,中大型动脉瘤组单纯弹簧圈栓塞23例,支架辅助弹簧圈栓塞18例,球囊辅助弹簧圈栓塞5例,2组比较也无明显差异(P>0.05); 小型动脉瘤组并发症发生率较中大型动脉瘤组低(7.32% vs 15.22%),但无明显差异(P>0.05); 术后6个月小型动脉瘤组无复发病例,中大型动脉瘤组复发率为8.69%(4/46),2组比较也无明显差异(P>0.05); 术后30 d,小型动脉瘤组GCS预后评分中恢复良好例数明显多于中大型动脉瘤组(87.80% vs 58.69%),2组比较有明显差异(P<0.05)。结论 介入栓塞治疗对不同直径的颅内动脉瘤均具有较好的疗效,但小型动脉瘤预后较好。     

前循环动脉瘤显微外科手术治疗

目的 探讨前循环动脉瘤患者的手术时机,总结临床经验.方法 回顾分析210例前循环动脉瘤患者显微外科手术资料,其中183例伴蛛网膜下隙出血患者Hunt-Hess分级为I ～Ⅱ级82例、Ⅲ级77例、Ⅳ级21例和V级3例.结果 共199例行动脉瘤瘤颈夹闭术,11例行动脉瘤切除包裹术.Glasgow预后分级恢复良好者97例(46.19%)、轻残80例(38.09%)、重残24例(11.43%)、死亡9例(4.29%).结论 前循环动脉瘤的显微外科手术需根据患者具体情况选择手术时机,对不同类型前循环动脉瘤术中的判断及处理措施,是手术获得成功的重要因素.     

Assessment of long-term results of intracranial aneurysm clipping by means of computed tomography angiography

Background and purposeThe aim of this retrospective study was to assess the effectiveness of aneurysm clipping by computed tomography angiography (CTA) in a long-term follow-up.Material and methodsThe CTA examination was performed in 119 patients who had 143 aneurysms clipped. The examinations were performed 3 to 11 years (mean 6 years) after clipping using a GE Lightspeed PRO16 scanner.ResultsIn all cases but one, good quality CTA images, suitable for evaluation of the arteries around the clip site, were obtained. Complete aneurysm closure without neck remnant or regrowth was confirmed in 137 (96%) aneurysms. In 4 (3%) cases, neck remnants were detected (2 on the anterior communicating artery [AComA] and 2 on the middle cerebral artery [MCA]). A total clip slippage from the aneurysm dome was revealed in 1 case. One case of aneurysm re-rupture was noted, 11 years after clipping. The rebleeding was caused by AComA aneurysm regrowth. Among these 6 patients with unsatisfactory clipping, 2 required further treatment and 4 remain under observation. Nineteen ‘de novo’ aneurysms in other locations were found in 14 (12%) patients. Summing up all of the pathological findings in the study group, there were 18 (15%) patients who needed further management including close surveillance or re-treatment.ConclusionsComputed tomography angiography is a simple and reliable method of aneurysm clipping evaluation. The long-term follow-up CTA confirmed the permanent and complete obliteration of 96% of the aneurysms. The rate of unsatisfactory aneurysm closure was 4%, but only 1.4% needed re-treatment during a mean follow-up of 6 years. The annual risk of aneurysm re-rupture was 0.1%.     

支架辅助弹簧圈栓塞治疗前交通动脉宽颈动脉瘤

目的 分析支架辅助弹簧圈栓塞治疗前交通动脉宽颈动脉瘤的安全性和有效性.方法 该回顾性研究纳入昆明医科大学第二附属医院脑血管病科2016年7月-2020年7月经DSA诊断的应用支架辅助栓塞治疗的前交通动脉宽颈动脉瘤患者.收集所有患者的临床相关资料,评价支架辅助栓塞治疗的疗效和安全性.治疗技术指标采用术后即刻DSA Ray...     

Pipeline血流导向装置治疗颅内动脉瘤的安全性及疗效分析

目的探讨Pipeline血流导向装置(PED)治疗颅内动脉瘤的安全性和疗效。方法回顾性分析2015年2月至2020年2月郑州大学第一附属医院神经介入科收治的采用PED治疗的颅内动脉瘤患者103例(108个动脉瘤)。其中颈内动脉颅内段小型动脉瘤65例,Willis环远端动脉瘤23例,椎-基底动脉动脉瘤15例;囊状动脉瘤83例,夹层和梭形动脉瘤20例;破裂动脉瘤9例,未破裂动脉瘤94例。术后采用O′Kelly Marotta(OKM)分级标准判断动脉瘤的闭塞程度,采用改良Rankin量表评分(mRS)评估临床预后。结果103例患者(108个动脉瘤)共置入109枚支架,支架置入成功率为100%。术后即刻动脉瘤闭塞OKM分级A级45例(43.7%)、B级42例(40.8%)、C级6例(5.8%)、D级10例(9.7%)。103例患者中,围手术期9例(8.7%)发生并发症,其中出血性事件1例(1.0%),缺血性事件8例(7.8%),死亡1例(1.0%)。术后12个月,102例患者中,mRS评分≤2分者99例(97.1%),3~5分3例(2.9%);79例行数字减影血管造影检查,其中OKM分级B级和C级各7例(各占8.9%),D级65例(82.2%),无一例患者的动脉瘤复发。结论采用PED治疗颈内动脉颅内段小型动脉瘤、椎-基底动脉动脉瘤及Willis环远端动脉瘤,围手术期并发症少,手术效果好。