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Results 951 - 1000 of 1190
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Lederman G - - 1997
BACKGROUND: Single-fraction radiosurgery of acoustic neuromas less than 3 cm in diameter is remarkable for high control but not infrequent incidence of facial and trigeminal neuropathy. Larger tumors treated surgically often result in deafness and facial neuropathy. Fractionated stereotactic radiosurgery was used in an effort to maintain effective therapy while ...
Schwarz S - - 1997
Surgical intervention in supratentorial intracerebral haemorrhage (ICH) is still controversial. We assessed the value of haematoma evacuation with a case-control study. 145 consecutive patients with supratentorial spontaneous ICH without tumour or vascular abnormalities were analysed. Haematoma evacuation was performed in 24 patients. Age, sex, Glasgow Coma Scale (GCS), level of ...
Pelissou-Guyotat I - - 1997
The authors analyze their personal series of 90 patients with cerebral arteriovenous malformations (AVMs) concerning the place of radiosurgery (RS). Out of the 90 patients, 34 undervent Linac RS-RS was used as single treatment (17%) or in combination with embolization or surgery (21%.) Eradication rate assessed angiographically after 2 years ...
Zamorano L - - 1997
From January 1992 to November 1996, 17 patients with the diagnosis of intracranial meningioma underwent radiosurgical treatment. Of these, 7 patients were treated using a Linac-based system (group 1), and 10 using the Leksell Gamma Knife unit (group 2). The follow-up ranged between 12 and 48 (median 33) months for ...
Mendenhall W M - - 1996
In this paper the authors evaluate the results of linear accelerator (LINAC)-based stereotactic radiosurgery for acoustic schwannomas. Fifty-six patients underwent LINAC-based stereotactic radiosurgery for acoustic schwannomas at the University of Florida between July 1988 and November 1994. Each patient was followed for a minimum of 1 year or until death; ...
Anderson D E - - 1996
A 32-month-old Angus bull was evaluated because of a 2-month history of a slowly progressive swelling located cranial to the base of the scrotum. The mass was 8 x 8 x 6 cm, and was causing phimosis. The mass was determined to be a penile hematoma on the basis of ...
Johnston J L - - 1996
A series of 85 patients having what are defined as small, deep intracranial arteriovenous malformations (AVMs) is analysed in terms of presentation, investigation, treatment and outcome. This group of patients is taken from a consecutive series of 306 patients with AVM treated over a 20 year period. The anatomical distribution ...
Aoki Y - - 1996
PURPOSE: Aim of the study is to compare our treatment results or gamma knife radiosurgery for arteriovenous malformation (AVM) and to obtain factors determining nidus obliteration and/or adverse effect. METHODS: We analyzed 236 patients with AVM treated between June 1990 and February 1994. The patients consisted of 137 men and ...
Kader A - - 1996
Angiography has been considered to be the gold standard to judge the success of treatment for cerebral arteriovenous malformations (AVMs). Patients without residual nidus or early draining veins on postoperative angiograms are considered cured, with the risk of hemorrhage eliminated. A series of five patients with recurrent AVMs after negative ...
Gobin Y P - - 1996
Embolization was used to reduce the size of brain arteriovenous malformations (AVMs) prior to radiosurgical treatment in 125 patients who were poor surgical candidates or had refused surgery. Of these patients, 81% had suffered hemorrhage, and 22.4% had undergone treatment at another institution. According to the Spetzler-Martin scale, the AVMs ...
Friedman W A - - 1996
Two hundred and one patients with arteriovenous malformations (AVMs) treated radiosurgically between May 1988 and February 1995 are analyzed in this study. Twelve patients sustained a posttreatment hemorrhage during this period. Pretreatment factors associated with increased hemorrhage risk were identified in 11 of these patients and included arterial aneurysms, venous ...
Vigliani M C - - 1996
PURPOSE: To evaluate the effects of limited field conventional cerebral radiotherapy (RT) on cognitive functions of adults. METHODS AND MATERIALS: A prospective neuropsychological study was performed on 17 patients who underwent conventional limited field RT for a low-grade glioma or for a good-prognosis anaplastic glioma. Results were compared with 14 ...
Kondziolka D - - 1996
A multiinstitutional study was conducted to evaluate the technique, dose-selection parameters, and results of gamma knife stereotactic radiosurgery in the management of trigeminal neuralgia. Fifty patients at five centers underwent radio-surgery performed with a single 4-mm isocenter targeted at the nerve root entry zone. Thirty-two patients had undergone prior surgery, ...
Link M J - - 1996
Over the past 5 years 29 patients with dural arteriovenous fistulas (AVFs) were treated by the authors using the Leksell radiosurgical gamma knife unit. Within 2 days after radiosurgery, 17 patients with AVFs that exhibited retrograde pial or cortical venous drainage (12 patients) and/or produced intractable bruit (eight patients) underwent ...
Yamamoto M - - 1996
The detailed long-term follow-up results of 40 patients treated for cerebral arteriovenous malformations with gamma knife radiosurgery are presented, with special reference to postradiosurgical complications that can develop many years after irradiation. The follow-up period after radiosurgery was 54 to 205 months, excluding one mortality, with a mean and a ...
Hasuo K - - 1996
PURPOSE: To assess the efficacy of irradiation combined with particulate embolization for treating type D dural carotid-cavernous fistulas, supplied by the meningeal branches of both external (ECA) and internal carotid arteries. MATERIAL AND METHODS: Nine patients were treated by particulate embolization via the ECA branches, followed by radiation therapy with ...
Forster D M - - 1996
We report the results of treatment with radiosurgery of 29 tumours in 27 patients with acoustic neuromas between 1986 and 1989. The median follow-up was 6.6 years. The treatment appears to be an effective alternative to surgery for patients with tumours of 3 cm diameter or less. The mortality and ...
Killer M M Department of Neurosurgery, University of Vienna; Vienna, - - 1996
A series of 45 patients who have undergone combined treatment for cerebral arteriovenous malformations (AVM's) is presented. All patients underwent additional radiosurgery after endovascular and/or surgical treatment. Stereotactic radiosurgical treatment using the Gamma knife has been available in our institution since 1992. The treatment strategy for brain AVM's has changed ...
Karlsson B - - 1996
The incidence for hemorrhage in non-obliterated arteriovenous malformations (AVM) during the first two years following Gamma Knife (GK) surgery was compared to the calculated incidence in untreated patients. There was a decrease in the incidence of hemorrhage as compared to the natural course. This difference was statistically significant. The actual ...
Allgood J W - - 1996
PURPOSE: In an effort to increase the therapeutic ratio of radiation therapy, so-called "nonstandard" irradiation regimens are being used more frequently. One such regimen, concomitant boost, entails giving a second daily fraction during part of the treatment course, thus reducing the total treatment time and decreasing the opportunity for tumor ...
Hudgins W R - - 1996
Clinical and imaging results of Gamma Knife treatment of 100 consecutive patients with intracranial meningiomas are reported. Only 1 patient refused follow-up imaging and her symptoms remain improved after 1 year. Mean values for the patient and treatment parameters were age 61 years, duration of symptoms 3.6 years, time since ...
Carol M - - 1996
Peacock is a 3-D conformal treatment planning and delivery system for conformal radiation therapy which delivers intensity-modulated fields. A group of 13 patients were treated between March and February, 1995. Patient age ranged from 10 to 74. Six of the patients had previously received radiation therapy. Target volume was from ...
Jones R F - - 1996
A series of 24 patients with Chiari malformation and hydromyelia, treated at the Prince of Wales Children's Hospital between 1975 and 1991, is reviewed. The age range of these patients was 3 to 19 years. Eleven had a Chiari 1 malformation and 13 had a Chiari 2 malformation. The follow-up ...
Rodesch G G Neuroradiologie Vasculaire Diagnostique et Thérapeutique, Hôpital Bicêtre; Le Kremlin Bicêtre, - - 1995
Among a global group of 164 spinal arteriovenous shunts, a series of 16 spinal cord arteriovenous malformations (SCAVMs) were diagnosed in a pediatric population below 15 years of age. The majority of the lesions affected the male population; 6 were located in the cervical spine and 10 at the thoracolumbar ...
Misra U K - - 1995
Central motor conduction abnormalities have been reported on the hemiplegic side only. In a study on supratentorial intracerebral hemorrhage (ICH), we found central motor conduction time (CMCT) prolongation on the non-hemiplegic side in 12 patients. This study reports the prognostic significance of CMCT prolongation on the non-hemiplegic side. CT scans ...
DeMeritt J S - - 1995
PURPOSE: To determine the influence of preoperative N-butyl cyanoacrylate embolization on outcome in the treatment of cerebral arteriovenous malformations. METHODS: Two groups were compared: 30 patients who underwent surgery and embolization versus 41 patients who underwent surgery only. Both groups were categorized by Spetzler-Martin grade and evaluated with the Glasgow ...
Wikholm G - - 1995
PURPOSE: To present the treatment outcome after embolization of arteriovenous malformations. METHODS: All patients with cerebral arteriovenous malformations treated in 1987 and 1988 (27 patients, group I) and in 1992 and 1993 (35 patients, group II) were compared regarding treatment results and clinical outcome. RESULTS: Complications of the treatment occurred ...
Mitra D - - 1995
In a prospective study, the prognostic value of clinical characteristics and CT scan findings in 50 patients of intracerebral haemorrhage (ICH) has been examined. Follow up has been done over 6 months period. Each patient has been individually followed up for 8 weeks. At the end of the follow up ...
Olivero W C - - 1995
Little is known about the natural history and growth rate of asymptomatic meningiomas. To better delineate this problem, the authors reviewed the clinical records and imaging studies of the last 60 patients diagnosed with asymptomatic meningiomas at their institution. There were 45 women and 15 men, whose ages ranged from ...
Aiba T - - 1995
The authors have reviewed the clinical records of 110 patients with intracranial cavernous malformations diagnosed by histological examination and/or magnetic resonance imaging over a mean follow-up period of 4.71 years. These cases were divided, based on their presentation, into a hemorrhage group, a seizure group, and an incidentally diagnosed group. ...
Passero S - - 1995
BACKGROUND AND PURPOSE: Rebleeding in patients with primary intracerebral hemorrhage is considered uncommon, but there are no precise data to support this opinion. The purpose of this study was to assess the incidence and predictors of recurrent bleeding in survivors of primary intracerebral hemorrhage. METHODS: As part of a prospective ...
Sakas D E - - 1995
Forty consecutive patients who underwent craniotomy for traumatic hematoma after developing bilateral fixed dilated pupils were studied to determine the factors influencing quality of survival and to seek criteria for management. Clinical and computerized tomography (CT) data were correlated with outcome 1 year after craniotomy. The functional recovery (good outcome ...
Kohno M - - 1995
BACKGROUND: We performed surgical treatment successfully in six patients with spinal radiculomeningeal arteriovenous malformation (AVM); however, only four patients showed improvement of gait function postoperatively. METHODS: These experiences prompted us to review the clinical findings and their possible association with the functional outcome in 33 reported cases of radiculomeningeal AVM ...
Mori S - - 1995
BACKGROUND AND PURPOSE: In this study we examined the functional outcome of thalamic hemorrhage after 6 months as it related to neurological and computed tomographic (CT) findings in 104 patients. METHODS: Level of consciousness was determined on admission. Extension and volume of hematoma were examined with CT within 3 days. ...
Coffey R J RJ Department of Neurologic Surgery, Mayo Clinic Rochester, Minnesota - - 1995
To assess the role of clinical factors, size of lesion, site of involvement, and radiation dose in patients with cerebral arteriovenous malformations (AVMs) who underwent stereotactic radiosurgical treatment. We reviewed the results in 121 patients with cerebral AVMs treated with the Leksell "Gamma Knife" between January 1990 and December 1993 ...
Mathis J A - - 1995
PURPOSE: To evaluate the efficacy of combined particulate embolization and single-stage stereotactic radiosurgery in the treatment of large arteriovenous malformations (AVMs) of the brain. METHODS: Twenty-four patients with large brain AVMs (diameter > 3.0 cm; volume > 14 cm3), who had previously undergone particulate embolization and stereotactic radiosurgery, were retrospectively ...
Chen S T - - 1995
Hypertensive intracerebral hemorrhage has been considered as a one-time event with rare recurrence. This observation is quite different from our experience in Taiwan. We, therefore, conducted a systematic review of our series of consecutive patients with recurrent bleeding. During a 2-year period, we encountered 47 patients with recurrent hypertensive intracerebral ...
Schaller C - - 1995
We have tested a treatment protocol for intracerebral hemorrhage (ICH), consisting of stereotactic insertion of a catheter into the clot, hematoma lysis by the injection of a fibrinolytic agent, recombinant tissue-plasminogen activator (rt-PA), and closed system drainage of the liquefied clot. Fourteen patients underwent computed tomographically guided stereotactic hematoma puncture ...
Friedman W A - - 1995
Between May, 1988 and August, 1993, 158 patients with arteriovenous malformations (AVMs) were treated radiosurgically at the University of Florida. A mean dose of 1560 cGy was directed to the periphery of the lesions, which had a mean volume of 9 cc (0.5 to 45.3 cc). One hundred thirty-nine of ...
Friedman W A - - 1995
In summary, many reports indicate that approximately 80% of AVMs in the "radiosurgery-sized range" will be angiographically obliterated 2 years after radiosurgical treatment. Permanent neurologic complications are rare (2 to 3%). The major drawback of this treatment method is that patients are unprotected against hemorrhage during the 2-year latent period. ...
Seo Y - - 1995
To evaluate the effect of radiosurgery on angiographically occult vascular malformations (AOVMs), 9 patients treated with Gamma Knife surgery were followed up for 21-37 months. Eight patients had bleeding episodes, 1 had uncontrollable epilepsy. Rebleeding occurred in 3 AOVMs 5 or 6 months after treatment. One patient experienced transient radiation-induced ...
Townsend P W - - 1995
PURPOSE: Although orthopedic stabilization is frequently performed for pathological fractures caused by metastatic disease, no data is available to support the value of postoperative radiation therapy (S+RT) in this setting. METHODS AND MATERIALS: We reviewed 64 orthopedic stabilization procedures in 60 consecutive patients with metastatic disease to previously unirradiated weight-bearing ...
Young C S - - 1995
Since July 1989, 66 patients have received stereotactic radiosurgery for arteriovenous malformations of the brain. All cases were reviewed by our multidisciplinary group. As result of our treatment algorithms these patients underwent stereotactic radiosurgery, either as the sole therapy or as part of combined modality treatment. Using a 6 MV ...
Régis J - - 1995
The Gamma Knife radiosurgical treatment of 20 patients suffering from trigeminal neuralgia is reported. Eleven patients received radiosurgical treatment with the goal of pain relief. Six had secondary trigeminal neuralgia due to AVM, large cavernous sinus and petrous bone meningiomas, trigeminal neurinoma, or chordoma; 5 others had essential trigeminal neuralgia. ...
Ogunrinde O K - - 1995
OBJECTIVE: To assess those factors associated with and predictive of cranial nerve preservation after stereotactic radiosurgery in patients with small acoustic tumors identified by magnetic resonance imaging. DESIGN: We performed a retrospective analysis of our experience with 31 patients with preserved hearing and acoustic tumors measuring 10 mm or smaller ...
Levy D I - - 1995
Radiosurgery of AVM's is gaining in popularity and is advocated by many for the treatment of lesions less than 3 cm in diameter. During a 17 month period 33 patients with cerebral AVM's were treated with radiosurgery. All regions of the brain were represented in the series including brain stem. ...
Young R F - - 1995
Twenty patients who suffered persistent intractable pain from a variety of disorders underwent medial thalamotomy with the Leksell Gamma Knife. The lesions were directed at the intralaminar nuclei, the lateral portion of the medial dorsal nucleus, the centromedian and the parafascicular nuclei. Lesions were made with radiation doses from 140 ...
Seifert V - - 1994
Within a period of nearly 10 years, from October, 1980, to May, 1990, a total of 68 patients with a cerebral arteriovenous malformation (AVM) were referred to a radiosurgical center in the United States for stereotactic Bragg peak proton beam therapy. Radiosurgery was chosen as an alternative treatment, either because ...
Townsend P W - - 1994
PURPOSE AND METHODS: We reviewed 64 orthopedic stabilization procedures in 60 consecutive patients diagnosed with metastatic disease to previously unirradiated femurs, acetabula, and humeri with pathologic or impending pathologic fracture. Thirty-five patients who received adjuvant postoperative radiation therapy were compared with 29 patients who were treated with surgery alone. Many ...
Simoca I - - 1994
A retro- and prospective study was carried out in 150 patients who underwent surgery for benign (grade I) intracranial meningiomas (ICM). The mean duration of the follow-up was of 4 years. The subjects were divided into 4 groups according to the intervals of follow-up examination. The following variables were analysed: ...
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