Study of the posterior circulation in moyamoya disease

1984 ◽  
Vol 61 (6) ◽  
pp. 1032-1037 ◽  
Author(s):  
Susumu Miyamoto ◽  
Haruhiko Kikuchi ◽  
Jun Karasawa ◽  
Izumi Nagata ◽  
Toshio Ikota ◽  
...  
Keyword(s):  
Computerized Tomography ◽  
Moyamoya Disease ◽  
Cerebral Angiography ◽  
Posterior Circulation ◽  
Vascular Network ◽  
Anterior Circulation ◽  
Content Type ◽  
Vertebrobasilar System ◽  
Fine Print

✓ Eighty-two cases of cerebrovascular moyamoya disease were studied by cerebral angiography and computerized tomography. Occlusive lesions were demonstrated not only in the anterior circulation but also in the posterior circulation, and they were associated with the development of an abnormal vascular network (moyamoya vessels). Although occlusive lesions do occur in the vertebrobasilar system, the vertebrobasilar system also acts as a source of collateral channels to the anterior circulation in this disease.

Cerebrovascular moyamoya disease associated with an intracranial pseudoaneurysm

1982 ◽  
Vol 56 (1) ◽  
pp. 131-134 ◽  
Author(s):  
Hiroshi Yuasa ◽  
Sumitaka Tokito ◽  
Kazuo Izumi ◽  
Kazuaki Hirabayashi
Keyword(s):  
Histological Examination ◽  
Computerized Tomography ◽  
Temporal Lobe ◽  
Moyamoya Disease ◽  
Intracerebral Hematoma ◽  
Left Temporal Lobe ◽  
Content Type ◽  
Characteristic Appearance ◽  
Fine Print

✓ A 51-year-old woman became unconscious 19 hours after the onset of a headache. Computerized tomography disclosed an intracerebral hematoma in the left temporal lobe, with ventricular penetration. Angiography demonstrated the characteristic appearance of cerebrovascular moyamoya disease as well as an aneurysm-like shadow in the left temporal lobe, which proved on histological examination to be a pseudoaneurysm.

Multiple intracranial aneurysms associated with moyamoya disease

1981 ◽  
Vol 54 (5) ◽  
pp. 673-676 ◽  
Author(s):  
Yoshihide Nagamine ◽  
Shinichiro Takahashi ◽  
Makoto Sonobe
Keyword(s):  
Moyamoya Disease ◽  
Intracranial Aneurysms ◽  
Operative Indication ◽  
Content Type ◽  
Multiple Intracranial Aneurysms ◽  
Vertebrobasilar System ◽  
Initial Symptoms ◽  
Fine Print

✓ A case of multiple intracranial aneurysms associated with unilateral moyamoya vessels is reported. The authors have reviewed the age, sex, initial symptoms, site of aneurysm, and operative indication in similar cases reported in the literature. It was found that aneurysms associated with moyamoya disease were frequently located in the vertebrobasilar system.

Study of the posterior circulation in moyamoya disease

1986 ◽  
Vol 65 (4) ◽  
pp. 454-460 ◽  
Author(s):  
Susumu Miyamoto ◽  
Haruhiko Kikuchi ◽  
Jun Karasawa ◽  
Izumi Nagata ◽  
Ikuo Ihara ◽  
...  
Keyword(s):  
Moyamoya Disease ◽  
Superficial Temporal Artery ◽  
Occipital Lobe ◽  
Temporal Artery ◽  
Posterior Circulation ◽  
Juvenile Onset ◽  
Content Type ◽  
Field Defect ◽  
Visual Disturbances ◽  
Fine Print

✓ The involvement of the posterior circulation in moyamoya disease was studied in 178 patients. Forty-three had several types of disturbance such as visual field defect, decreased visual acuity, episodes of blindness, and scintillating scotomata. Most of these symptoms were attributed to occlusive lesions in the posterior circulation. Visual disturbances were seen more often in patients with a juvenile onset than in cases of adult onset. Superficial temporal artery (STA) to middle cerebral artery (MCA) anastomosis and encephalomyosynangiosis (EMS) improved the cerebral perfusion both in the anterior and posterior circulation by redistribution of blood. In most cases, the visual symptoms subsided or were stabilized after STA-MCA anastomosis and EMS. These surgical procedures did not, however, lead to direct revascularization in cases of ischemia in the visual cortex. In five patients with impending blindness, transplantation of the omentum to the occipital lobe led to improved vision.

Aneurysms of the posterior circulation: detection and treatment planning using volume-rendered three-dimensional helical computerized tomography angiography

2005 ◽  
Vol 103 (6) ◽  
pp. 1018-1029 ◽  
Author(s):  
J. Pablo Villablanca ◽  
Adina Achiriolaie ◽  
Parizad Hooshi ◽  
Neil Martin ◽  
Gary Duckwiler ◽  
...  
Keyword(s):  
Treatment Planning ◽  
Ct Angiography ◽  
Computerized Tomography ◽  
Treatment Options ◽  
Significant Proportion ◽  
Posterior Circulation ◽  
Content Type ◽  
Computerized Tomography Angiography ◽  
Posterior Circulation Aneurysms ◽  
Fine Print

Object. The aim of this study was to determine whether computerized tomography (CT) angiography could be used to identify and characterize aneurysms of the posterior circulation and guide optimal treatment selection, and how data obtained using this method compared with intraoperative findings. Methods. Patients suspected of harboring brain aneurysms underwent CT angiography and digital subtraction (DS) angiography; the results were prospectively interpreted by blinded independent evaluators. All patients with posterior circulation aneurysms were consecutively enrolled in the study. After treatment, neurosurgeons and endovascular therapists evaluated the ability of CT and DS angiography to demonstrate features of the lesions important for triage between treatment options (Wilcoxon signed-rank test) and to allow for coil or clip preselection and complete treatment planning (McNemar test of proportions), while using intraoperative findings as the basis of truth. In 242 patients overall, CT angiography detected 38 aneurysms and two aneurysmal blisters in 32 patients. The sensitivity of CT angiography in revealing posterior circulation aneurysms was 100% compared with DS angiography, with no false-positive results. Furthermore, CT angiography was sufficient as the sole study at triage for 65% of the posterior circulation aneurysms (26 of 40 lesions; p < 0.001), including 62% of the complex lesions (p < 0.001), and permitted coil or clip preselection in 74% of treated cases (20 of 27 cases; p < 0.002). Results of CT angiography revealed information about mural calcification and intraluminal thrombus not available on DS angiography, which affected patient care. Conclusions. In this study population, CT angiography was comparable to DS angiography in the detection and characterization of aneurysms of the posterior circulation. Computerized tomography angiography was used successfully to triage patients between endovascular and neurosurgical treatment options in a significant proportion of cases and permitted treatment planning in more than 70% of treated cases.

Chorioretinal atrophy in a patient with moyamoya disease

2004 ◽  
Vol 101 (5) ◽  
pp. 843-845 ◽  
Author(s):  
Mona Harissi-Dagher ◽  
Mikael Sebag ◽  
Jehan H. Dagher ◽  
Robert Moumdjian
Keyword(s):  
Moyamoya Disease ◽  
Peripheral Retina ◽  
Content Type ◽  
Chorioretinal Atrophy ◽  
Vertebrobasilar System ◽  
First Case ◽  
Vascular Insufficiency ◽  
Internal Carotid Arteries ◽  
Visual Disturbances ◽  
Fine Print

✓ Moyamoya disease is characterized by constrictions of segments of the internal carotid arteries (ICAs) and a resultant abnormal anastomotic network. In the literature, visual disturbances from cerebrovascular accidents in patients with moyamoya disease have been described, but very few reports of intraocular pathological conditions have been published. The authors describe a patient with moyamoya disease who presented with chorioretinal atrophy; an association between these two diseases has not previously been reported in the literature. Findings of a clinical ophthalmological evaluation and angiographic series are presented. During the fundic examination, evidence of chorioretinal atrophy was found in this patient. Choroidal vascular insufficiency was revealed by intravenous fluorescein angiography and occlusion of the ICAs proximal to the origin of the posterior communicating arteries by selective carotid and vertebral arteriography. The vertebrobasilar system provided anastomotic connections via the posterior communicating arteries. This is the first case report of chorioretinal atrophy associated with moyamoya disease. It is believed that the vasoocclusive effects of moyamoya disease may predispose the patient to atrophic changes in the peripheral retina. The development of an anastomotic network precludes the progression of this fundic anomaly.

Cerebral air embolism occurring at angiography and diagnosed by computerized tomography

1984 ◽  
Vol 60 (1) ◽  
pp. 177-178 ◽  
Author(s):  
Rand M. Voorhies ◽  
Richard A. R. Fraser
Keyword(s):  
High Resolution ◽  
Computerized Tomography ◽  
Cerebral Angiography ◽  
Air Embolism ◽  
Cerebral Air Embolism ◽  
Content Type ◽  
Fine Print

✓ A case of air embolism complicating cerebral angiography is presented. The presence of the embolism was confirmed with high-resolution computerized tomography scans using appropriate window settings.

The poor prognosis of ruptured intracranial aneurysms of the posterior circulation

1995 ◽  
Vol 82 (5) ◽  
pp. 791-795 ◽  
Author(s):  
Wouter I. Schievink ◽  
Eelco F. M. Wijdicks ◽  
David G. Piepgras ◽  
Chu-Pin Chu ◽  
W. Michael O'Fallon ◽  
...  
Keyword(s):  
Subarachnoid Hemorrhage ◽  
Aneurysmal Subarachnoid Hemorrhage ◽  
Initial Period ◽  
Posterior Circulation ◽  
Medical Record Linkage ◽  
Anterior Circulation ◽  
Content Type ◽  
Clinical Series ◽  
Posterior Circulation Aneurysms ◽  
Fine Print

✓ The first 48 hours after aneurysmal subarachnoid hemorrhage are critical in determining final outcome. However, most patients who die during this initial period are not included in hospital-based studies. We investigated the occurrence of subarachnoid hemorrhage in a population-based study to evaluate possible predictors of poor outcome. All patients diagnosed with aneurysmal subarachnoid hemorrhage between 1955 and 1984 were selected for analysis of mortality in the first 30 days using the medical record—linkage system employed for epidemiological studies in Rochester, Minnesota. One hundred and thirty-six patients were identified. The mean age of these 99 women and 37 men was 55 years. Rates for survival to 48 hours were 32% for the 19 patients with posterior circulation aneurysms, 77% for the 87 patients with anterior circulation aneurysms, and 70% for the 30 patients with a presumed aneurysm (p < 0.0001). Rates for survival to 30 days were 11%, 57%, and 53%, respectively, in these three patient groups (p < 0.0001). Clinical grade on admission to the hospital, the main variable predictive of death within 48 hours, was significantly worse in patients with posterior circulation aneurysms than in others (p < 0.0001). The prognosis of ruptured posterior circulation aneurysms is poor. The high early mortality explains why posterior circulation aneurysms are uncommon in most clinical series of patients with subarachnoid hemorrhage. The management of incidentally discovered intact posterior circulation aneurysms may be influenced by these findings.

Cerebral angiitis and intracerebral hemorrhage associated with methamphetamine abuse

1983 ◽  
Vol 58 (1) ◽  
pp. 109-111 ◽  
Author(s):  
Young J. Yu ◽  
David R. Cooper ◽  
David E. Wellenstein ◽  
Brian Block
Keyword(s):  
Drug Abuse ◽  
Intracerebral Hemorrhage ◽  
Computerized Tomography ◽  
Cerebral Angiography ◽  
Methamphetamine Abuse ◽  
Content Type ◽  
Vascular Abnormalities ◽  
Cerebral Angiitis ◽  
Radiographic Changes ◽  
Fine Print

✓ A case of reversible cerebral angiitis and intracerebral hemorrhage is reported in a methamphetamine abuser. Characteristic radiographic changes were demonstrated by selective cerebral angiography and computerized tomography. These vascular abnormalities disappeared after 1 month of treatment with prednisone, during which time the patient denied further drug abuse.

Computerized tomography angiography in isolated third nerve palsies

1998 ◽  
Vol 88 (4) ◽  
pp. 679-684 ◽  
Author(s):  
Robert M. McFadzean ◽  
Evelyn M. Teasdale
Keyword(s):  
Cerebral Aneurysm ◽  
Ct Angiography ◽  
Computerized Tomography ◽  
Cerebral Angiography ◽  
Diagnostic Tool ◽  
Nerve Palsy ◽  
Content Type ◽  
Third Nerve Palsy ◽  
Third Nerve ◽  
Fine Print

Object. The goal of this study was to assess the value of computerized tomography (CT) angiography as a diagnostic tool in isolated oculomotor nerve palsies. Methods. One hundred consecutive patients who presented with an isolated third nerve palsy were examined by CT angiography. This procedure was followed by conventional cerebral angiography in most patients in whom a vascular abnormality was noted on the CT angiography. Thus, all patients whose symptoms were caused by a compressive aneurysm were identified. The remaining patients were observed clinically to exclude the possibility that a missed cerebral aneurysm caused the isolated third nerve palsy. Eighteen patients harbored a cerebral aneurysm responsible for causing the isolated third nerve palsy. Most of the remaining patients experienced some degree of spontaneous recovery. There was no clinical evidence to indicate that a case of compressive cerebral aneurysm causing the isolated third nerve palsy had been missed on CT angiography. Conclusions. Computerized tomography angiography is a reliable diagnostic tool for use in the assessment of patients with an isolated third nerve palsy; it can identify the minority of patients in whom conventional cerebral angiography may be required.

Does moyamoya disease cause subarachnoid hemorrhage?

1984 ◽  
Vol 60 (2) ◽  
pp. 348-353 ◽  
Author(s):  
Nobuhiko Aoki ◽  
Hiroshi Mizutani
Keyword(s):  
Subarachnoid Hemorrhage ◽  
Computerized Tomography ◽  
Intracranial Hemorrhage ◽  
Moyamoya Disease ◽  
Single Case ◽  
Saccular Aneurysm ◽  
Content Type ◽  
Per Se ◽  
Fine Print

✓ The majority of patients with intracranial hemorrhage associated with moyamoya disease have been described as having subarachnoid hemorrhage (SAH), but it seems doubtful that moyamoya disease causes primary SAH. Computerized tomography (CT) has revealed that most of the hemorrhage found in cases of moyamoya disease is intracerebral or intraventricular. The authors have reviewed 54 cases of intracranial hemorrhage confirmed by CT, including nine of their own, and found that in all but one the bleeding was intracerebral or intraventricular. The single case of SAH was due to rupture of a saccular aneurysm associated with moyamoya disease. It may be concluded from these results that moyamoya disease does not cause primary SAH per se.

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