Abstract:
:The system consists of an inverted U-shaped frame with right angled corners, so mounted that it can be adjusted vertically, antero-posteriorly and made to rotate on an axis ("the axis of the frame") formed by its free ends. The frame carries an arc probe carrier whose probe holder slides on an arc which is centered on the axis of the frame. The centre of the probe holder and axis of fram lie in one plane "The plane of probe". After positioning the patient in the frame on the CT table, using either table indexing or laser positioning light, the plane of the probe is brought in the CT plane of the target. Once in this CT plane, direct measurements can be obtained so as to bring the axis of the frame passing through the target and centering the arc on the target. The frame can then be rotated to any desired angle and the probe holder can be moved to any position on the arc without altering the direction of the probe with respect to the target. As the structures in the probe plane are constructed of plastic, it can be used within the scanner with practically no artifacts, and direct measurements can be obtained without any calculations. This system can be used in any total body scanner with standard features and no special computer programming is necessary. This is a simple and truly CT-oriented stereotactic system with a high degree of accuracy.
journal_name
Acta Neurochir (Wien)journal_title
Acta neurochirurgicaauthors
Patil AAdoi
10.1007/BF01406198subject
Has Abstractpub_date
1983-01-01 00:00:00pages
19-26issue
1-2eissn
0001-6268issn
0942-0940journal_volume
68pub_type
杂志文章abstract::In a period of 13 years 978 cases of severe head injuries were operated on in our clinic. An analysis of the medical reports includes injuries of the superficial dural sinus (39 cases = 4%): among these injuries of the anterior and central part of the superior sagittal sinus (66 per cent), injuries of the transverse s...
journal_title:Acta neurochirurgica
pub_type: 杂志文章
doi:10.1007/BF01541788
更新日期:1992-01-01 00:00:00
abstract:BACKGROUND:Giant and large pituitary adenomas (PA) constitute a specific subset of PAs, with gross total resection (GTR) rates frequently not exceeding 50%. Both an anatomical inaccessibility and an inadequate tumor visualization are thought to play a role. This study analyzes risk factors for postoperative residuals a...
journal_title:Acta neurochirurgica
pub_type: 杂志文章
doi:10.1007/s00701-020-04497-1
更新日期:2020-10-01 00:00:00
abstract:BACKGROUND:Age is an important factor in determining prognosis following severe head injury (SHI), although mortality in patients > or =65 years is poorly reported. The aim of this study was to document mortality in patients with SHI > or =65 years. METHODS:A retrospective analysis of prospectively collected data from...
journal_title:Acta neurochirurgica
pub_type: 杂志文章
doi:10.1007/s00701-010-0666-x
更新日期:2010-08-01 00:00:00
abstract:INTRODUCTION:Gamma knife radiosurgery (GKRS) has for the last decades been an established treatment option for patients with small- or medium-sized vestibular schwannomas (VS), although little data is reported on long-term outcome regarding quality of life (QOL) and tumour control in this patient category. The objectiv...
journal_title:Acta neurochirurgica
pub_type: 杂志文章
doi:10.1007/s00701-013-1924-5
更新日期:2014-02-01 00:00:00
abstract::General aspects of glioblastomas are considered such as preoperative diagnosis, stereotactic punctures for tissue samples, location and tumour size, interference with CSF circulation. The operative risk and different approaches to treatment are discussed, and the results are compared. The described combined treatment ...
journal_title:Acta neurochirurgica
pub_type: 杂志文章
doi:10.1007/BF01406638
更新日期:1978-01-01 00:00:00
abstract::Extensive large dumbbell-shaped hypoglossal schwannoma is extremely rare, and total resection is nearly impossible. We present a case of a 61-year-old male with a giant-size hypoglossal schwannoma with moderate tongue atrophy. The tumor extended from the enlarged hypoglossal canal to the brainstem intradurally and the...
journal_title:Acta neurochirurgica
pub_type: 杂志文章
doi:10.1007/s00701-017-3431-6
更新日期:2018-04-01 00:00:00
abstract:BACKGROUND:Drain insertion following chronic subdural haematoma (CSDH) evacuation reduces recurrence and improves outcomes. The mechanism of this improvement is uncertain. We assessed whether drains result in improved postoperative imaging, and which radiological factors are associated with recurrence and functional ou...
journal_title:Acta neurochirurgica
pub_type: 杂志文章,多中心研究
doi:10.1007/s00701-020-04356-z
更新日期:2020-06-01 00:00:00
abstract:BACKGROUND:Mortality and morbidity of aneurysmal subarachnoid haemorrhage (aSAH) remain high, and prognosis is influenced by multiple non-modifiable factors such as aSAH severity. By analysing the chronology of aSAH management, we aim at identifying modifiable factors with emphasis on the occurrence of rebleeds in a se...
journal_title:Acta neurochirurgica
pub_type: 杂志文章
doi:10.1007/s00701-020-04673-3
更新日期:2021-01-06 00:00:00
abstract:BACKGROUND:Treatment of small ruptured aneurysms (SRAs) remains controversial, with literature reporting difficulty with endovascular versus microsurgical approaches. This paper analyzes outcomes after endovascular coiling and microsurgical clipping among patients with SRAs prospectively enrolled in the Barrow Ruptured...
journal_title:Acta neurochirurgica
pub_type: 杂志文章
doi:10.1007/s00701-020-04602-4
更新日期:2021-01-01 00:00:00
abstract:BACKGROUND:Blood blister-like aneurysms (BBAs) pose a significant challenge to neurosurgeons and neuro-interventionalists. These fragile broad-based aneurysms have a propensity to rupture with minimal manipulation during surgical or endovascular explorations because, unlike saccular aneurysms, they lack all layers of t...
journal_title:Acta neurochirurgica
pub_type: 杂志文章
doi:10.1007/s00701-014-2212-8
更新日期:2014-11-01 00:00:00
abstract:BACKGROUND:Treatment of complex intracranial aneurysms requires strategic pre-interventional or preoperative planning. In addition to modern three-dimensional (3D) rotational angiography, computed tomography angiography (CTA) or magnetic resonance angiogram (MRA), a solid, tangible 3D model may improve anatomical compr...
journal_title:Acta neurochirurgica
pub_type: 杂志文章
doi:10.1007/s00701-016-2892-3
更新日期:2016-09-01 00:00:00
abstract::The authors describe an approach through the temporal horn of the lateral ventricle which proved to be useful for clipping of a large dorsal type basilar bifurcation aneurysms. It facilitates the preservation of the perforating arteries behind the aneurysm, because it gives sufficient working space to move the aneurys...
journal_title:Acta neurochirurgica
pub_type: 杂志文章
doi:10.1007/BF01404942
更新日期:1995-01-01 00:00:00
abstract:BACKGROUND:Advantages of telemetric devices for long-term intracranial pressure (ICP) measurement have been mentioned several times in the literature. However, descriptions of associated complications are lacking. Therefore, the presented observational study focused on clinical and radiological findings after insertion...
journal_title:Acta neurochirurgica
pub_type: 杂志文章
doi:10.1007/s00701-013-1991-7
更新日期:2014-05-01 00:00:00
abstract:PURPOSE:To illustrate the use of indocyanine green (ICG) video-angiography to confirm abolition of spinal dural arteriovenous fistula (SDAVF) and preserve the normal vascular anatomy intraoperatively. METHODS:A 73-year-old woman presenting with progressive myelopathy was diagnosed with an SDAVF, where the origin of th...
journal_title:Acta neurochirurgica
pub_type: 杂志文章
doi:10.1007/s00701-009-0445-8
更新日期:2010-03-01 00:00:00
abstract::A computer system, based on IBM PC, was designed for the cerebrospinal compensatory model identification. The intracranial pressure (ICP) signal, registered during the lumbo-lumbar infusion test is analyzed by means of the spectral analysis algorithm in order to measure precisely the pulse wave amplitude. The amplitud...
journal_title:Acta neurochirurgica
pub_type: 杂志文章
doi:10.1007/BF01669992
更新日期:1990-01-01 00:00:00
abstract:BACKGROUND:Nicardipine prolonged release implants (NPRI) have been shown to decrease the incidence of cerebral vasospasm and infarcts significantly in patients after aneurysmal subarachnoid haemorrhage (SAH) following microsurgical clipping. Yet, the comparison with results after endovascular coiling is lacking. This s...
journal_title:Acta neurochirurgica
pub_type: 杂志文章
doi:10.1007/s00701-011-1129-8
更新日期:2011-11-01 00:00:00
abstract::Between 1984 and 1991 86 patients with single cerebral metastases underwent linear accelerator radiosurgery using the atraumatic and reproducible Greitz-Bergström head-fixation device. Routine one-month follow-up documented disappearance of the tumour in 16 patients, with resolution of the oedema and ventricular shift...
journal_title:Acta neurochirurgica
pub_type: 杂志文章
doi:10.1007/BF01809265
更新日期:1993-01-01 00:00:00
abstract:BACKGROUND:This study aimed to clarify the characteristics of the basilar arteries of rabbits two and seven days after subarachnoid haemorrhage (SAH) and to investigate the influence of hypoxia on vascular responses to acetylcholine and endothelin-1. METHODS:Thirty four New Zealand white rabbits were divided into 3 gr...
journal_title:Acta neurochirurgica
pub_type: 杂志文章
doi:10.1007/s00701-003-0024-3
更新日期:2003-07-01 00:00:00
abstract::A 35-year-old female presented with partial complex seizures. Computed tomography (CT) showed a slightly high density mass over the right frontal convexity, with heterogeneous contrast enhancement. T1-weighted magnetic resonance (MR) imaging showed the tumour as a hypo-intense lesion, with faint reticular enhancement ...
journal_title:Acta neurochirurgica
pub_type: 杂志文章
doi:10.1007/s007010050493
更新日期:1999-01-01 00:00:00
abstract::The follow up of 49 stereotactically operated epileptics is graphically demonstrated and the 79 operations in basic targets within the amygdala and the area of the anterior pole of the thalamus are described. The patients had valuable gaining in 80%; The continued developement of stereotactic methods in the future is ...
journal_title:Acta neurochirurgica
pub_type: 杂志文章
doi:10.1007/978-3-7091-8444-8_30
更新日期:1976-01-01 00:00:00
abstract::A modification of the previous methods of producing cerebral ischaemia in rats (Koizumi et al., Longa et al.), using an intraluminal thread technique, is described. The middle cerebral artery is occluded by introducing a simple 3-0 nylon thread (0.20-0.249 mm in diameter) through the internal carotid artery in the nec...
journal_title:Acta neurochirurgica
pub_type: 杂志文章
doi:10.1007/BF01403007
更新日期:1991-01-01 00:00:00
abstract::In this paper the results of measurements of ultrasound velocity in, and density of, a number of normal and pathological tissues are given. From the results it can be concluded that intracranial pathological regions will often be detectable with ultrasound techniques, but is is not possible with any degree of certaint...
journal_title:Acta neurochirurgica
pub_type: 杂志文章
doi:10.1007/BF01809169
更新日期:1979-01-01 00:00:00
abstract:BACKGROUND:Schwannomas occur sporadically or in association with neurofibromatosis 2 (NF2), an autosomal dominant disorder, which predisposes to multiple schwannomas, meningiomas and spinal ependymomas, with bilateral vestibular schwannomas as the classic hallmark. As NF2 and sporadic schwannomas differ in some respect...
journal_title:Acta neurochirurgica
pub_type: 杂志文章
doi:10.1007/s007010070036
更新日期:2000-01-01 00:00:00
abstract:INTRODUCTION:Radiosurgery (RS) and fractionated radiotherapy (FRT) are part of the therapeutic armamentarium for the management of cavernous sinus meningiomas. We propose a systematic review of the local tumor control and clinical outcomes after monofractionated radiosurgical treatment, including gamma knife radiosurge...
journal_title:Acta neurochirurgica
pub_type: 杂志文章,meta分析
doi:10.1007/s00701-018-3711-9
更新日期:2018-12-01 00:00:00
abstract::Cavernous malformations (CM) occur very rarely in the ventricular system. We report a patient with a rare location in the third ventricle who had intermittent headaches as the initial symptom. ...
journal_title:Acta neurochirurgica
pub_type: 杂志文章
doi:10.1007/s00701-004-0393-2
更新日期:2005-01-01 00:00:00
abstract::The levels of circulating immune complexes (CIC) were assayed in the sera of 109 patients with intracranial space occupying lesions. The CIC levels were significantly increased in all the brain tumours. After treatment, the CIC levels were still significantly increased when compared to the controls but showed no chang...
journal_title:Acta neurochirurgica
pub_type: 杂志文章
doi:10.1007/BF01420068
更新日期:1995-01-01 00:00:00
abstract::A brain tumour in a newborn is rare. The incidence of congenital tumours is 0.34 per one million births. We report a case of a huge right hemispheric tumour operated upon successfully in a child 5 days old, who had a total tumoural excision and an uneventful outcome with 5 months follow up. This tumour appears to be t...
journal_title:Acta neurochirurgica
pub_type: 杂志文章
doi:10.1007/BF01405146
更新日期:1991-01-01 00:00:00
abstract:BACKGROUND:Ganglioglioma is a common seizure-associated tumor, and some factors that may influence the postoperative seizure outcome have not been discussed or are controversial. The goal of this study was to observe the postoperative seizure outcome and the prognostic factors in patients with epileptogenic ganglioglio...
journal_title:Acta neurochirurgica
pub_type: 杂志文章
doi:10.1007/s00701-011-1259-z
更新日期:2012-05-01 00:00:00
abstract:BACKGROUND:Vascular Endothelial Growth/Permeability Factor (VEG/PF) has been correlated with angiogenesis and vascular leakage in diverse pathological conditions of the brain. On the other hand, neoformation of capillaries and vascular hyperpermeability have been related to progressive enlargement of chronic subdural h...
journal_title:Acta neurochirurgica
pub_type: 杂志文章
doi:10.1007/s007010200047
更新日期:2002-04-01 00:00:00
abstract:INTRODUCTION:Intraoperative detection of residual tumor remains an important challenge in surgery to treat gliomas. New developments in optical techniques offer non-invasive high-resolution imaging that may integrate well into the workflow of neurosurgical operations. Using an intracranial glioma model, we have recentl...
journal_title:Acta neurochirurgica
pub_type: 杂志文章
doi:10.1007/s00701-009-0248-y
更新日期:2009-05-01 00:00:00