Skip to main content
Advertisement

Main menu

  • Home
  • Content
    • Current Issue
    • Publication Preview--Ahead of Print
    • Past Issue Archive
    • Case of the Week Archive
    • Classic Case Archive
    • Case of the Month Archive
    • COVID-19 Content and Resources
  • For Authors
  • About Us
    • About AJNR
    • Editors
    • American Society of Neuroradiology
  • Submit a Manuscript
  • Podcasts
    • Subscribe on iTunes
    • Subscribe on Stitcher
  • More
    • Subscribers
    • Permissions
    • Advertisers
    • Alerts
    • Feedback
  • Other Publications
    • ajnr

User menu

  • Subscribe
  • Alerts
  • Log in
  • Log out

Search

  • Advanced search
American Journal of Neuroradiology
American Journal of Neuroradiology

American Journal of Neuroradiology

  • Subscribe
  • Alerts
  • Log in
  • Log out

Advanced Search

  • Home
  • Content
    • Current Issue
    • Publication Preview--Ahead of Print
    • Past Issue Archive
    • Case of the Week Archive
    • Classic Case Archive
    • Case of the Month Archive
    • COVID-19 Content and Resources
  • For Authors
  • About Us
    • About AJNR
    • Editors
    • American Society of Neuroradiology
  • Submit a Manuscript
  • Podcasts
    • Subscribe on iTunes
    • Subscribe on Stitcher
  • More
    • Subscribers
    • Permissions
    • Advertisers
    • Alerts
    • Feedback
  • Follow AJNR on Twitter
  • Visit AJNR on Facebook
  • Follow AJNR on Instagram
  • Join AJNR on LinkedIn
  • RSS Feeds
Research ArticleINTERVENTIONAL

Angioplasty and Stent Placement in Intracranial Atherosclerotic Stenoses and Dissections

Pedro Lylyk, José E. Cohen, Rosana Ceratto, Angel Ferrario and Carlos Miranda
American Journal of Neuroradiology March 2002, 23 (3) 430-436;
Pedro Lylyk
  • Find this author on Google Scholar
  • Find this author on PubMed
  • Search for this author on this site
José E. Cohen
  • Find this author on Google Scholar
  • Find this author on PubMed
  • Search for this author on this site
Rosana Ceratto
  • Find this author on Google Scholar
  • Find this author on PubMed
  • Search for this author on this site
Angel Ferrario
  • Find this author on Google Scholar
  • Find this author on PubMed
  • Search for this author on this site
Carlos Miranda
  • Find this author on Google Scholar
  • Find this author on PubMed
  • Search for this author on this site
  • Article
  • Figures & Data
  • Info & Metrics
  • References
  • PDF
Loading

Abstract

BACKGROUND AND PURPOSE: Stent placement has been shown to increase the safety and effectiveness of balloon angioplasty in cervical carotid disease. Here, the authors investigated the feasibility, safety, and short-term outcome of stent-assisted angioplasty for the treatment of intracranial stenoses.

METHODS: Thirty-four patients (age range, 12–77 years; mean age, 54 years) with symptomatic intracranial atherosclerotic lesions and dissections that produced stenosis of more than 50% were selected and treated with stents. Eighteen lesions (53%) were located in the anterior circulation, and 16 (47%) were in the vertebrobasilar complex. The mean stenosis was 75%.

RESULTS: At follow up, 21 patients (62%) improved clinically, 11 (32%) remained stable, and the condition of two patients (6%) deteriorated. In all patients, the angiographic degree of stenosis was reduced to less than 30%. In 10 patients (29%), two or more stents were implanted: Two stents were implanted in six patients, and three, in four patients. The transient procedural morbidity rate was 12%, and the transient neurologic morbidity rate was 6%. One patient had hemorrhagic transformation due to reperfusion and died, and another patient had a massive myocardial infarction after 5 months. Twenty patients were followed up with angiography for at least 6 months, and none required repeat angioplasty.

CONCLUSION: Endovascular revascularization of intracranial arteries by means of stent-assisted angioplasty is technically feasible, effective, and safe in selected patients.

Little is known about the natural history of stenosis caused by intracranial atherosclerosis. However, as many as 6–29% of all ischemic strokes are related to stenotic lesions located in intracranial large vessels, and an increased risk for stroke, heart disease, and death has been consistently observed (1–6).

Traditionally, aggressive anticoagulation has been used, but it has notable morbidity and death rates, which prompt a search for additional treatment strategies (7). The benefits of revascularization of stenotic segments in preventing stroke have been unequivocally demonstrated in patients with cervical carotid artery disease (8–10). However, the treatment of patients with intracranial atherosclerosis lesions still is controversial. The results of endovascular revascularization of intracranial vessels with balloon angioplasty have been tempered by the increased risk of stroke, which results from distal embolization, vessel dissection, and acute vessel occlusion secondary to dissection or platelet aggregation (11, 12). Stent use has been shown to increase the safety and effectiveness of balloon angioplasty in cervical carotid disease (3, 14). Recently, the advent of a new generation of more flexible stents has prompted consideration of stent-assisted angioplasty as an alternative approach in intracranial stenoses (15–19).

The purpose of this study was to investigate the effectiveness, safety, and short-term outcome of stent placement for the treatment of symptomatic intracranial artery disease.

Methods

From June 1996 through November 2000, 36 consecutive patients with symptomatic intracranial atherosclerotic stenotic lesions and dissections that produced significant stenosis were selected for PTA and stent placement as a part of a feasibility protocol approved by our institutional review board. Significant stenosis was defined as 50–99% stenosis, as depicted on angiograms, according to North American Symptomatic Carotid Endarterectomy Trial (NASCET) criteria (8). Inclusion criteria for this study included failure of antithrombotic therapy (n= 32)—defined as the occurrence of ischemic events (one or more transient ischemic attacks [TIAs] and/or strokes) while they were using therapeutic doses of aspirin (>81 mg/d), warfarin (international normalized ratio > 2.0), ticlopidine (500 mg/d), clopidogrel (75 mg/d), or heparin (prolongation of partial thromboplastin time of >1.5 times the baseline value)—and a contraindication to antithrombotic therapy (n= 4). In two patients, the selected stent was not able to reach the target because of extreme tortuosity; these patients were excluded from further analysis. The patient population was composed of 29 male and five female subjects (age range, 12–77 years; mean age, 54 years).

All patients had a stenotic lesion that was considered to be directly responsible for the symptoms, and they were selected for stent-assisted angioplasty on the basis of a number of factors, including the following: failure or contraindication for medical therapy; nonfeasibility, failure, or contraindication to surgery; poor neurologic grade; and poor medical status. Eighteen (53%) of the lesions were located in the internal carotid artery (ICA) territory (Fig 1), and 16 (47%) were in the vertebrobasilar complex (Figs 2 and 3). The most common location was the distal vertebral artery (VA) (n = 11 [32%]) followed by the petrocavernous ICA (n = 10 [29%]), vertebrobasilar junction (n = 3 [9%]), basilar artery (n = 2 [6%]), supraclinoid ICA (n = 5 [15%]), ICA M1 segment (n = 2 [6%]), and M3 segment (n = 1 [3%]).

Fig 1.
  • Download figure
  • Open in new tab
  • Download powerpoint
Fig 1.

Angioplasty and stent placement in a lesion in the ICA territory.

A, Lateral angiogram of the left ICA shows a petrocavernous atherosclerotic lesion.

B, Lateral magnified radioscopic view demonstrates the distally placed guidewire, balloon marks, and implanted stent.

C, Postoperative angiogram reveals correction of the diseased segment.

Fig 2.
  • Download figure
  • Open in new tab
  • Download powerpoint
Fig 2.

Angioplasty and stent placement in a lesion in the left VA.

A, Anteroposterior angiogram of a long stenotic lesion in the left VA. Note that the plaque is centered on the posteroinferior cerebellar artery (PICA) origin.

B, Postoperative anteroposterior view shows correction of the stenotic segment.

C, Close-up radioscopic oblique view demonstrates three telescoped stents fully deployed.

Fig 3.
  • Download figure
  • Open in new tab
  • Download powerpoint
Fig 3.

Angioplasty and stent placement in a lesion in the basilar artery.

A, Anteroposterior angiogram of the right VA shows an atherosclerotic lesion of the basilar artery.

B, Immediate postoperative angiogram reveals re storation of the diseased segment. Note the intentional underdilation of the diseased segment.

C, Follow-up angiogram obtained after 12 months demonstrates no signs of in-stent stenosis.

All the patients underwent preoperative CT or MR imaging or both and cerebral digital subtraction angiography (DSA). Preprocedural quantitative angiographic measurements (Integris; Phillips Medical System), were obtained in the target vessel and lesion. The degree of stenosis was calculated according to the NASCET criteria for grading carotid stenosis. The measurements were calibrated by using the guiding catheter as a reference. Atherosclerotic lesions were classified, according to the method of Mori et al (20), into three groups on the basis of lesion morphology. Type A lesions were 5 mm or shorter, concentric or moderately eccentric, and not totally occlusive. Type B lesions were 5–10 mm in length, extremely eccentric or totally occlusive, and younger than 3 months, and type C lesions were longer than 10 mm, angulated more than 90°, excessively tortuous or totally occluded, and older than 3 months.

Patients received aspirin and ticlopidine (Ticlid; Roche) or clopidogrel (Plavix; Sanofi), 72 hours before the procedure. Combined therapy was continued for 6 months, and aspirin was continued indefinitely. In this series, clinical follow-up was performed at 1, 3, 6, and 12 months. Angiographic follow-up was conducted at 3 and 6 months. No patient was lost to follow-up monitoring.

Evaluation of the Procedure

The primary objective was reduction in degree of stenosis to less than 50% without worsening of the neurologic status. Accordingly, we defined grade I as a reduction in the degree of stenosis to less than 50%, and grade II was any reduction a stenosis of less than 50%.

Postprocedural Clinical Evaluation

To assess the postoperative neurologic status, we defined a five-grade scale as follows: I, neurologic improvement (no recurrent TIAs or ischemic symptoms); II, no changes and no neurologic complications; III, transient neurologic complications; IV, neurologic deterioration and permanent neurologic complication; and V, death associated with the procedure.

General Surgical Technique

Every patient was taken to the endovascular suite for subsequent cerebral angiography and endovascular treatment. General anesthesia was routinely indicated. Brainstem-evoked potentials, cerebral oxygen saturation, and invasive arterial pressure were appropriately monitored. A unilateral intraarterial approach was used after a standard Seldinger puncture and catheterization, and an 8F introducer sheath was placed in the right femoral artery with full heparin therapy. Our protocol consisted of the administration of a 10,000 IU bolus dose just before starting the therapeutic procedure, and a maintenance booster of 1500 IU was administered every hour to provide an activated clotting time of longer 250 seconds before stent placement. Abciximab (Reo-pro) was infused intraprocedurally. Patients received uncoated aspirin (500 mg by mouth once a day) and ticlopidine (250 mg by mouth twice a day) for days before stent placement, and both medications were continued for at least 90 days.

Selective DSA was performed, and the target lesion was routinely outlined and measured in multiple projections with rotational D angiography. A 6F Envoy guiding catheter (Cordis, Miami, FL), 6F coaxial catheter attached to an 8F Envoy catheter, was then advanced into the target vessel by using a standard 0.035- or 0.038-inch guidewire. Occasionally, predilation with a balloon may have been required, especially when proximal or distally located atherosclerotic plaques prevent advancement of the stent. In general, dilation was performed by using a balloon diameter–vessel diameter ratio of 1:1 . We then advanced a microcatheter—Excel (Boston Scientific), Prowler (Cordis Endovascular Systems), or Rapid transit (Cordis Endovascular Systems)—over a tapered 0.014-inch-diameter 150-cm-long guide wire (Transend-14; Scimed Life Sciences, Maple Grove, MN) and performed microcatheter exchange with the magnetic device (The Magnet, Scimed Life Sciences) for the balloon-premounted stent delivery system (four cases). Alternatively, the microguidewire was replaced by a 0.014-inch-diameter 300-cm-long exchange microguidewire (Choice, Scimed Life Sciences), and the microcatheter was subsequently withdrawn. Adequate support was needed to guide the stent device over the microguidewire, and this was achieved by navigating the wire across the target as far as M2-M3 or P2-P3 segments.

Stent Selection and Description

Careful sizing of stents is very important. In general, the stent size should match the diameter of the reference vessel and correspond with the length of the lesion. In the first cases, we used devices currently used in interventional cardiology, such as the Velocity stent and the AVE gfx steel stent (Arterial Vascular Engineering, Santa Rosa, CA), which is made of stainless steel. More recently, a new generation of stents has been introduced into clinical practice. These stents, such as the AVE inx (Medtronic), are metallic radiopaque stents with a more flexible design and delivery-deployment catheter. The AVE inx stent was positioned across the lesion with enough overlap on each side of the target to properly anchor the device. The device was then deployed by inflating the balloon delivery system for 15–30 seconds at 6 atm of pressure.

Results

The overall success in reaching the target lesion with stents was 94% (of 36 targets), and two procedures were aborted because of an inability to manipulate the device in tortuous anatomy. In 10 instances (2%), complete coverage of the lesion required the implantation of a second (six cases) or even a third (four cases) abutted stent. The rest of the targets were treated with one stent each (24 cases [71%]). A total of 48 stents were implanted (mean, 1.41 stents per lesion): The AVE inx was implanted in 7% (n = 34), followed by AVE gfx (n = 8 [17%]), Velocity (n = 3 [6%]), and others (n = 3 [6%]). Twenty-four patients (71%) received AVE inx stents; four (12%), AVE gfx stents; and six (18%), a combination of stents. Mean lesion length 12.7 mm (range, 3–27 mm). Six lesions (20%) were classified as type A; 16 (53%), as type B; and eight (27%), as type C. Preprocedural stenosis varied from 55% to 95% (mean, 75%), and postoperative residual stenosis varied from 0% to 30% (mean, 18%).

Twenty-one patients had symptomatic relief (clinical grade I, 62%), nine remained neurologically stable (clinical grade II, 26%), two remained stable but had transient neurologic complications (clinical grade III, 6%) and two patients died (clinical grade V, 6%).

Technical Limitations and Procedural Complications

Inability to Reach the Target.—In two patients, we were not able to reach the target with the stent. Both targets were located on the ICA at the cervical segment or the anterior bend of the cavernous segment. This subgroup had no procedure-related morbidity.

Unintended Stent Dislodgement.—Neuronavigation through tortuous vessels induced friction with the ascending mounted stent. With closed angles, tracking friction may have induced stent dislodgement from the delivery catheter. Permanent fluoroscopic control of the ascending mounted stent was essential to detect undesired displacements. Two stents (one AVE gfx and one AVE inx) were unintentionally dislodged from the balloon before the target was reached; one was recovered with a snare. However, one stent was not recovered; it was partially expanded at a proximal site, with no clinical complications.

Stent Displacement.—Upon balloon inflation, we observed that balloon-mounted stents tended to advance from the selected position because of flow propulsion, but they could be repositioned easily. A loosely positioned stent may have been displaced backward when we attempted to remove a balloon from the stent lumen after deflating it. The use of a stent with an inadequate diameter or underexpansion of the stent for fear of rupture may have accounted for this event. This occurred in three cases; one required the implantation of a telescoped proximal stent. Three patients had sudden hypertension related to balloon inflation, and one had associated bradycardia. Two embolic events were successfully treated with selective urokinase infusion. No acute or subacute stent thrombosis, wire perforations, or arterial ruptures occurred. The procedural morbidity rate was 12%.

Postoperative Morbidity and Follow-up

At immediate postoperative follow-up, two patients had a TIA, and one had a myocardial infarction. One patient with bilateral severe stenoses of the supraclinoid and proximal M1 segments was successfully treated, and adequate revascularization of the left ICA and M1 was achieved. However, the patient had a postoperative cerebral hematoma related to the reperfusion of a chronically ischemic non autoregulating parenchyma. The patient underwent surgery but had a contralateral infarction and died. Postmortem pathologic examination of the stented artery revealed amyloid angiopathy.

Twenty patients were followed up clinically and angiographically for at least 6 months. This subset of patients remained clinically and angiographically stable, and repeat angioplasty was not required in any of the cases. One patient with type C vertebrobasilar atherosclerotic stenosis died from a myocardial infarction 5 months after the procedure.

The clinical follow-up period varied from 1 to 42 months (mean, 5 month). Good short-term clinical outcomes were achieved in 32 patients (94%). Angiographic follow-up varied from 1 to 24 months (mean, 4 months). No evidence of angiographic in-stent de novo stenosis or restenosis was recognized in seven cases that were followed up clinically and angiographically for at least 12 months. Two patients had incidental focal arterial dissection at the target parent vessel. Both were successfully treated with anticoagulation. The global morbidity rate was 18% (six of 32), the neurologic morbidity rate was 6% (two of 32), and the mortality rate was 6% (two of 34).

Discussion

Indications for any therapy depend on both the risks of the untreated disease and the safety and effectiveness of the therapeutic procedure. The natural history of intracranial stenoses has not been studied as well as that of extracranial stenoses, but they consistently have a high rate for stroke. Patients with intracranial ICA stenoses who were followed up for an average of 3.9 years had a TIA or stroke rate of 27.3%, (3, 4, 6). Stenoses of the MCA occur at a rate of at least 8% per year (21–22). Posterior fossa lesions managed with either warfarin or aspirin therapy for a mean of 13.8 months have a stroke rate of 8–40%, depending on the site of the lesion (7, 23, 24).

Advantages of stent-assisted angioplasty include exclusion of the plaque and regions of dissection from the vessel lumen, as well as prevention of vessel recoil and rupture. In the intracranial circulation, the application of stents has been limited largely because of the inability to manipulate existing stents in the cranial vessels. However, the availability of recently introduced flexible stents, the development of potent antiplatelet inhibitors, and the increasing evidence from experimental and clinical studies of intracranial stents have encouraged the use of stents in the management of ischemic and hemorrhagic intracranial cerebrovascular disease (15–19, 25–33).

We report findings in a series of 36 consecutive patients, focusing on the 34 whom we were able to treat with angioplasty and stent placement. In two cases, we were unable to place the stent in the desired location because of technical limitations. Both cases involved lesions in the supraclinoid carotid artery, and the limiting segment was the cervical segment or the anterior bend of the cavernous carotid artery. In two other patients, we prematurely dislodged the stent before reaching the target. Retrospective analysis of these four cases revealed that the radius of the curve of the major vascular loop (carotid siphon) proximal to the target lesion was smaller than that of patients in whom stents were successfully deployed. In no case were we unable to place the stent because of lesion complexity, but three cases (9%) required fibrinolysis and predilation with an angioplasty balloon before the stent could be placed.

In our series, the most common site for intracranial angioplasty was the distal vertebral artery (Fig 2). The issue that must be considered is whether a stenotic vertebral artery should be treated when the contralateral artery is normal and provides adequate supply to the basilar artery if the risk of thrombus formation and distal embolization is not eliminated. This pathogenic mechanism prevails in 25% of patients with vertebrobasilar insufficiency (34). When the stenotic artery ends in PICA, protection of this particular territory may also warrant intervention (35).

Compared with balloon angioplasty, stent placement produced a better angiographic result. In terms of the mean residual stenosis in intracranial vessel disease, stent placement seems to be a feasible, safe, and effective treatment. The mean postoperative residual stenosis was 18% after stent placement, whereas that of previously reported balloon angioplasty was 41–47% (11, 36); limitation of the plaque recoil phenomena account for this difference. Balloon overdilation is not an accepted practice in the intracranial circulation, and it may be especially dangerous in the basilar artery, where different authors advocate underdilation (to not more than half of the normal diameter) because of the insubstantial muscularis and adventitial layers of the artery wall and the subsequent elevated risk of perforation (37–38) (Fig 3). In a recent case (not included in this series), fatal arterial rupture occurred after stent deployment. This patient had a severe symptomatic basilar lesion in the middle third of the basilar trunk. An acceptable angiographic result was initially achieved, with the restoration of the arterial diameter, to as much as to 50%, without complications. However, a better result was considered possible, and further balloon inflation provoked artery rupture. Vascular and neurologic complications related to intracranial angioplasty include vessel rupture, dissection, thrombosis, thromboembolism, and death.

Our neurologic morbidity rate of 12% and mortality rate of 6% compares favorably with those of other reports (11, 36, 39–43). Our treatment protocol included a high level of heparin with the concomitant use of platelet glycoprotein IIb/IIIa receptor inhibitor. Adequate anticoagulation is essential for the procedure, and we did not find consistent data to cause us to reduce its level. In this series, we found no hemorrhagic complications that were specifically attributed to this approach; this observation confirms previously published data (44).

Conclusion

Endovascular revascularization of intracranial vessels with angioplasty and stent placement is feasible, safe, and effective. Continued development of flexible balloon and stent systems—with a focus on tracking, flexibility, radiopacity, and thrombogenic properties—in essential to overcome technical limitations. The potential advantages of endovascular revascularization of the inaccessible intracranial vessels with angioplasty and stent placement are encouraging.

Footnotes

  • Presented in part at the 21th International Congress of Radiology, Buenos Aires, Argentina 2000, and the AANS-CNS Joint Meeting, Hawaii, 2001.

References

  1. ↵
    Akins PT, Pilgram TK, Cross DT III, Moran C. Natural history of stenosis from intracranial atherosclerosis by serial angiography. Stroke 1998;29:433–438
    Abstract/FREE Full Text
  2. Sacco R, Zamanillo C, Kargman D, Shi T. Determinants of intracranial atherosclerotic stroke: The Northern Manhattan Stroke Study (abstract). Stroke 1994;25:259
  3. ↵
    Marzewski DJ, Furlan AJ, St Louis P, et al. Intracranial internal carotid stenosis: long term prognosis. Stroke 1982;13:821–824
    Abstract/FREE Full Text
  4. ↵
    Bogousslavsky J, Regli F. Prognosis of symptomatic intracranial obstruction of internal carotid artery. Eur Neurol 1983;22:351–358
    PubMed
  5. Wechsler LR, Kistler P, Davis KR et al. The prognosis of carotid siphon stenosis. Stroke 1986;17:714–718
    Abstract/FREE Full Text
  6. ↵
    Craig DR, Mageuro K, Watridge C, Robertson JT, Barnett HJM, Fox AJ. Intracranial internal carotid stenosis. Stroke 1982;13:825–828
    Abstract/FREE Full Text
  7. ↵
    Chimowitz MI, Kokkinos J, Strong J, et al. The Warfarin–Aspirin Symptomatic Intracranial Disease Study. Neurology 1995;45:1488–1493
    Abstract/FREE Full Text
  8. ↵
    North American Symptomatic Endarterectomy Trial (NASCET) Collaborators. Beneficial effect of carotid endarterectomy in symptomatic patients with high-grade stenosis. N Engl J Med 1991;325:445–453
    CrossRefPubMed
  9. European Carotid Surgery Trialists Collaborative Group. MRC European Carotid Surgery Trial: interim results for asymptomatic patients with severe or with mid carotid stenosis. Lancet 1995;337:1235–1241
  10. ↵
    Executive Committee for the Asymptomatic Carotid Atherosclerosis Study. Endarterectomy for asymptomatic carotid artery stenosis. JAMA 1995;18:1421–1428
  11. ↵
    Clark WM, Barnwell SL, Nesbit G, O’Neill, OR, Wynn ML, Coull BM. Safety and efficacy of percutaneous transluminal angioplasty for intracranial atherosclerotic stenosis. Stroke 1995;26:1200–1204
    Abstract/FREE Full Text
  12. ↵
    Takis C, Kwan ES, Pessin MS, Jacobs DH, Caplan LR. Intracranial angioplasty: experience and complications. AJNR Am J Neuroradiol 1997;18:1661–1668
    Abstract
  13. Roubin GS, Yadav S, Iyer SS, Vitek J. Carotid stent-supported angioplasty: a neurovascular intervention to prevent stroke. Am J Cardiol 1996;78:8–12
  14. ↵
    Yadav JS, Roubin GS, King P, Iyer S, Vitek J. Angioplasty and stenting for restenosis after carotid endarterectomy: initial experience. Stroke 1996;27:2075–2079
    Abstract/FREE Full Text
  15. ↵
    Al-Mubarak N, Gomez CR, Vitek JJ, Roubin GS. Stenting of symptomatic stenosis of the intracranial internal carotid artery. AJNR Am J Neuroradiol 1998;19:1949–1951
    Abstract
  16. Dorros G, Cohn JM, Palmer LE. Stent deployment resolves a petrous carotid artery angioplasty dissection. AJNR Am J Neuroradiol 1998;19:392–394
    Abstract
  17. Feldman RL, Trig L, Gaudier J, Galat J. Use of a coronary Palmaz Schatz stent in the percutaneous treatment of a intracranial carotid artery stenosis. Cathet Cardiovasc Diagn 1996;38:316–319
    CrossRefPubMed
  18. Gomez CR, Misra VK, Liu MW, et al . Elective stenting of symptomatic basilar artery stenosis. Stroke 2000;31:95–99
    Abstract/FREE Full Text
  19. ↵
    Mori T, Kazita K, Mori K. Cerebral angioplasty and stenting for intracranial vertebral atherosclerotic stenosis. AJNR Am J Neuroradiol 1999;20:787–789
    Abstract/FREE Full Text
  20. ↵
    Mori T, Fukuoka M, Kazita K, et al. Follow-up study after intracranial percutaneous transluminal cerebral balloon angioplasty. AJNR Am J Neuroradiol 1998;19:1525–1533
    Abstract
  21. ↵
    Bogousslavsky J, Barnett HJM, Fox AJ, Hachinski V, Taylor W. Atherosclerotic disease of the middle cerebral artery. Stroke 1986;17:1112–1120
    Abstract/FREE Full Text
  22. ↵
    The EC/IC Bypass Study Group. Failure of extracranial-intracranial arterial bypass to reduce the risk of ischemic stroke: results of an international randomized trial. N Engl J Med 1985;3:1191–1200
  23. ↵
    The Warfarin-Aspirin Symptomatic Intracranial Disease Study Group. Prognosis of patients with symptomatic vertebral or basilar artery stenosis (abstract). Stroke 1995;26:35
  24. ↵
    Moufarrij NA, Little JR, Furlan AJ, Leatherman JR, Williams GW. Basilar and distal vertebral artery stenosis: long-term follow up. Stroke 1986;17:938–942
    Abstract/FREE Full Text
  25. ↵
    Geremia G, Haklin M, Brennecke L. Embolization of experimentally created aneurysms with intravascular stent devices. AJNR Am J Neuroradiol 1994;15:1223–1231
    Abstract/FREE Full Text
  26. Szikora I, Guterman LR, Wells KM, Hopkins LN. Combined use of stents and coils to treat experimental wide-necked carotid aneurysms: preliminary results. AJNR Am J Neuroradiol 1994;15:1091–1102
    Abstract/FREE Full Text
  27. Turjman F, Massoud TF, Cheng J, Ji C, Guglielmi G, Viñuela F, Robert J. Combined stent implantation and endovascular coil placement for treatment of experimental wide-necked aneurysms: a feasibility study in swine. AJNR Am J Neuroradiol 1994;15:1087–1090
    Abstract/FREE Full Text
  28. Wakloo AK, Lanzino G, Lieber BB, Hopkins LN. Stents for intracranial aneurysms: the beginning of a new endovascular era? Neurosurgery 1998;43:377–379
    CrossRefPubMed
  29. Wakhloo AK, Scheilhammer F, de Vries J, Haberstroh J, Schumacher M. Self-expanding and balloon expandable stents in the treatment of carotid aneurysms: an experimental study in canine model. AJNR Am J Neuroradiol 1994;15:493–502
    Abstract/FREE Full Text
  30. Lylyk P, Ceratto R, Hurvitz D, Basso A. Treatment of a vertebral dissecting aneurysm with stents and coils: technical case report. Neurosurgery 1998;43:385–388
    CrossRefPubMed
  31. Mericle RA, Lanzino G, Wakhloo AK, Guterman LR, Hopkins LN. Stenting and secondary coiling of intracranial internal carotid artery aneurysm: technical case report. Neurosurgery 1998;43:1229–1233
    PubMed
  32. Sekhon LH, Morgan, Sorby W, Grinell V. Combined endovascular stent implantation and endosaccular coil placement for the treatment of a wide-necked vertebral artery aneurysm: technical case report. Neurosurgery 1998 ,43:380–384
    CrossRefPubMed
  33. ↵
    Phatouros CC, Higashida RT, Malek AM, et al. Endovascular stenting of an acutely thrombosed basilar artery: technical case report and review of the literature. Neurosurgery 1999 ,44:667–673
    CrossRefPubMed
  34. ↵
    Wityk RJ, Chang HM, Rosengart A, et al. Proximal extracranial vertebral artery disease in the New England Medical Center Posterior Circulation Registry. Arch Neurol 1998;55:470–478
    CrossRefPubMed
  35. ↵
    Chastain HD II, Campbell MS, Iyer S, et al. Extracranial vertebral artery stent placement: in-hospital and follow-up results. J Neurosurg 1999;91:547–552
    CrossRefPubMed
  36. ↵
    Marks MP, Marcellus M, Norbash AM, et al. Outcome of angioplasty for atherosclerotic intracranial stenosis. Stroke 1999;30:1065–1069
    Abstract/FREE Full Text
  37. ↵
    Ahuja A, Guterman LR, Hopkins LN. Angioplasty for basilar artery atherosclerosis: case report. J Neurosurg 1992;77:941–944
    PubMed
  38. ↵
    Nakatsuka H, Ueda T, Ohta S, Sasaki S. Successful percutaneous transluminal angioplasty for basilar stenosis: technical case report. Neurosurgery 1996;39:161–164
    CrossRefPubMed
  39. ↵
    Callahan AS III, Berger BL. Balloon angioplasty of intracranial arteries for stroke prevention. J Neuroimaging 1997;7:232–235
    PubMed
  40. Higashida RT, Tsai FY, Halbach VV, et al. Transluminal angioplasty for atherosclerotic disease of the vertebral and basilar arteries. J Neurosurg 1993;78:192–198
    PubMed
  41. Terada T, Higashida RT, Halbach VV, et al. Transluminal angioplasty for atherosclerotic disease of the distal vertebral and basilar arteries. J Neurol Neurosurg Psychiatry 1996;60:377–381
    Abstract/FREE Full Text
  42. Connors JJ, Wojak JC. Percutaneous transluminal angioplasty for intracranial atherosclerotic lesions: evolution of technique and short–term results. J Neurosurg 1999;91:415–423
    PubMed
  43. ↵
    Rasmussen PA, Perl J II, Barr JD, et al. Stent assisted angioplasty of intracranial vertebrobasilar atherosclerosis: an initial experience. J Neurosurg 2000;92:771–778
    PubMed
  44. ↵
    Meemon MA, Blankenship JC, Wood GC, Frey CM, Menapace FJ. Incidence of intracranial hemorrhage complicating treatment with glycoprotein IIb/IIIa receptor inhibitors: a pooled analysis of major clinical trials. Am J Med 2000;109:213–217
    CrossRefPubMed
  • Received April 20, 2001.
  • Accepted after revision September 19, 2001.
  • Copyright © American Society of Neuroradiology
View Abstract
PreviousNext
Back to top

In this issue

American Journal of Neuroradiology: 23 (3)
American Journal of Neuroradiology
Vol. 23, Issue 3
1 Mar 2002
  • Table of Contents
  • Index by author
Advertisement
Print
Download PDF
Email Article

Thank you for your interest in spreading the word on American Journal of Neuroradiology.

NOTE: We only request your email address so that the person you are recommending the page to knows that you wanted them to see it, and that it is not junk mail. We do not capture any email address.

Enter multiple addresses on separate lines or separate them with commas.
Angioplasty and Stent Placement in Intracranial Atherosclerotic Stenoses and Dissections
(Your Name) has sent you a message from American Journal of Neuroradiology
(Your Name) thought you would like to see the American Journal of Neuroradiology web site.
CAPTCHA
This question is for testing whether or not you are a human visitor and to prevent automated spam submissions.
Citation Tools
Angioplasty and Stent Placement in Intracranial Atherosclerotic Stenoses and Dissections
Pedro Lylyk, José E. Cohen, Rosana Ceratto, Angel Ferrario, Carlos Miranda
American Journal of Neuroradiology Mar 2002, 23 (3) 430-436;

Citation Manager Formats

  • BibTeX
  • Bookends
  • EasyBib
  • EndNote (tagged)
  • EndNote 8 (xml)
  • Medlars
  • Mendeley
  • Papers
  • RefWorks Tagged
  • Ref Manager
  • RIS
  • Zotero
Share
Angioplasty and Stent Placement in Intracranial Atherosclerotic Stenoses and Dissections
Pedro Lylyk, José E. Cohen, Rosana Ceratto, Angel Ferrario, Carlos Miranda
American Journal of Neuroradiology Mar 2002, 23 (3) 430-436;
del.icio.us logo Digg logo Reddit logo Twitter logo CiteULike logo Facebook logo Google logo Mendeley logo
  • Tweet Widget
  • Facebook Like
  • Google Plus One

Jump to section

  • Article
    • Abstract
    • Methods
    • Results
    • Discussion
    • Conclusion
    • Footnotes
    • References
  • Figures & Data
  • Info & Metrics
  • References
  • PDF

Related Articles

  • No related articles found.
  • PubMed
  • Google Scholar

Cited By...

  • Update in the treatment of intracranial atherosclerotic disease
  • Flow-diverter reconstruction of an intracranial internal carotid artery dissection during thrombectomy for acute ischaemic stroke
  • Stenting for intracranial stenosis: potential future for the prevention of disabling or fatal stroke
  • Long-term outcome of drug-eluting stenting for stenoses of the intracranial vertebrobasilar artery and vertebral ostium
  • Point-of-Care Testing for Anticoagulation Monitoring in Neuroendovascular Procedures
  • Utilization of the Neuron 6 French 0.053 inch inner luminal diameter guide catheter for treatment of cerebral vascular pathology: continued experience with ultra distal access into the cerebral vasculature
  • How Effective Is Endovascular Intracranial Revascularization in Stroke Prevention? Results from Borgess Medical Center Intracranial Revascularization Registry
  • Nickel allergy: a reason for concern?
  • Reporting standards for angioplasty and stent-assisted angioplasty for intracranial atherosclerosis
  • Intracranial Stenting in Patients with Atherosclerotic Stenosis Associated with Various Aneurysms in the Same Diseased Arterial Segment
  • Reporting Standards for Angioplasty and Stent-Assisted Angioplasty for Intracranial Atherosclerosis
  • A Novel, Self-Expanding, Nitinol Stent in Medically Refractory Intracranial Atherosclerotic Stenoses: The Wingspan Study
  • Comparison of elective stenting of severe vs moderate intracranial atherosclerotic stenosis
  • Safety, Feasibility, and Short-Term Follow-Up of Drug-Eluting Stent Placement in the Intracranial and Extracranial Circulation
  • Perforator stroke after elective stenting of symptomatic intracranial stenosis
  • Guidelines for Prevention of Stroke in Patients With Ischemic Stroke or Transient Ischemic Attack: A Statement for Healthcare Professionals From the American Heart Association/American Stroke Association Council on Stroke: Co-Sponsored by the Council on Cardiovascular Radiology and Intervention: The American Academy of Neurology affirms the value of this guideline.
  • Guidelines for Prevention of Stroke in Patients With Ischemic Stroke or Transient Ischemic Attack: A Statement for Healthcare Professionals From the American Heart Association/American Stroke Association Council on Stroke: Co-Sponsored by the Council on Cardiovascular Radiology and Intervention: The American Academy of Neurology affirms the value of this guideline.
  • Progressive Symptomatic Carotid Dissection Treated With Multiple Stents
  • Moyamoya Syndrome in an Adolescent With Essential Thrombocythemia: Successful Intracranial Carotid Stent Placement
  • Recommendations for Comprehensive Stroke Centers: A Consensus Statement From the Brain Attack Coalition
  • Training, competency, and credentialing standards for diagnostic cervicocerebral angiography, carotid stenting, and cerebrovascular intervention: A Joint Statement from the American Academy of Neurology, the American Association of Neurological Surgeons, the American Society of Interventional and Therapeutic Neuroradiology, the American Society of Neuroradiology, the Congress of Neurological Surgeons, the AANS/CNS Cerebrovascular Section, and the Society of Interventional Radiology
  • Elective stenting for symptomatic middle cerebral artery stenosis presenting as transient ischaemic deficits or stroke attacks: short term arteriographical and clinical outcome
  • Urgent endovascular revascularization for symptomatic intracranial atherosclerotic stenosis
  • Emergent Stenting to Treat Patients With Carotid Artery Dissection: Clinically and Radiologically Directed Therapeutic Decision Making
  • Neuroradiologic and Clinical Features of Arterial Dissection of the Anterior Cerebral Artery
  • Advances in Interventional Neuroradiology
  • Carotid Stenting Is Unproven: Randomization Is a Must
  • Crossref
  • Google Scholar

This article has not yet been cited by articles in journals that are participating in Crossref Cited-by Linking.

More in this TOC Section

  • Stent-Assisted Coiling in the Treatment of Unruptured Intracranial Aneurysms: A Randomized Clinical Trial
  • Persistent Opacification of the Woven EndoBridge Device: A Conebeam CT Analysis of the Bicêtre Occlusion Scale Score 1 Phenomenon
  • Endovascular Recanalization of Symptomatic Chronic ICA Occlusion: Procedural Outcomes and Radiologic Predictors
Show more INTERVENTIONAL

Similar Articles

Advertisement

News and Updates

  • Lucien Levy Best Research Article Award
  • Thanks to our 2022 Distinguished Reviewers
  • Press Releases

Resources

  • Evidence-Based Medicine Level Guide
  • How to Participate in a Tweet Chat
  • AJNR Podcast Archive
  • Ideas for Publicizing Your Research
  • Librarian Resources
  • Terms and Conditions

Opportunities

  • Share Your Art in Perspectives
  • Get Peer Review Credit from Publons
  • Moderate a Tweet Chat

American Society of Neuroradiology

  • Neurographics
  • ASNR Annual Meeting
  • Fellowship Portal
  • Position Statements

© 2023 by the American Society of Neuroradiology | Print ISSN: 0195-6108 Online ISSN: 1936-959X

Powered by HighWire