Abstract:
:The cerebrospinal fluid (CSF) flow rates in 12 patients with symptoms suggestive of CSF shunt obstruction were measured with magnetic resonance (MR) phase imaging. The shunts were imaged over the skull, just distal to any reservoir, using a curved surface coil. Images perpendicular to the direction of flow were made on a 1.5-tesla clinical unit with a flow-sensitive pulse sequence. The patients' ages ranged from 2 months to 28 years. All patients had ancillary investigations to determine the functional status of the shunt. No flow was detected in seven patients with blocked shunts. Flow rates between 3 and 40 cc/hr were found in three patients with functioning shunts. Two patients, one with a blocked shunt and one with a functioning shunt, could not be imaged due to motion artifact. Magnetic resonance phase imaging is a promising technique in the determination of CSF shunt obstruction.
journal_name
J Neurosurgjournal_title
Journal of neurosurgeryauthors
Drake JM,Martin AJ,Henkleman RMdoi
10.3171/jns.1991.75.4.0535subject
Has Abstractpub_date
1991-10-01 00:00:00pages
535-40issue
4eissn
0022-3085issn
1933-0693journal_volume
75pub_type
杂志文章abstract::The authors describe a simple technique that reduces the incidence of retained ventricular catheters and minimizes the risk of life-threatening intraventricular hemorrhage during the removal of an obstructed, adherent ventricular catheter in patients with hydrocephalus. The technique requires no special equipment and ...
journal_title:Journal of neurosurgery
pub_type: 杂志文章
doi:10.3171/jns.1995.83.6.1101
更新日期:1995-12-01 00:00:00
abstract::OBJECTIVE Quantitative assessment of tumor microvascularity has the potential to improve prognostication, advance understanding of tumor biology, and help narrow potential molecular therapies. While the role of tumor microvascularity has been widely studied in meningiomas, this study examines both the role of automate...
journal_title:Journal of neurosurgery
pub_type: 杂志文章
doi:10.3171/2016.10.JNS161825
更新日期:2018-03-01 00:00:00
abstract::OBJECTIVE Glioma is the most common form of brain tumor and has high lethality. The authors of this study aimed to elucidate the efficiency of preoperative inflammatory markers, including neutrophil/lymphocyte ratio (NLR), derived NLR (dNLR), platelet/lymphocyte ratio (PLR), lymphocyte/monocyte ratio (LMR), and progno...
journal_title:Journal of neurosurgery
pub_type: 杂志文章,多中心研究
doi:10.3171/2017.3.JNS161648
更新日期:2018-09-01 00:00:00
abstract::A 13-year-old girl was referred for evaluation of the deceleration in her rate of linear growth, an arrest in the progression of her pubertal maturation, and bifrontal headaches. Detailed endocrinological and radiological studies revealed the following abnormalities: partial growth hormone deficiency, prepubertal lute...
journal_title:Journal of neurosurgery
pub_type: 杂志文章
doi:10.3171/jns.1983.58.6.0932
更新日期:1983-06-01 00:00:00
abstract::Rupture of an intracranial dissecting aneurysm is a rare but dangerous event. The authors' experience with 14 cases of these lesions on the vertebrobasilar circulation suggests that these aneurysms have typical angiographic silhouettes and that, at least in the vertebral artery, they are treatable by proximal arterial...
journal_title:Journal of neurosurgery
pub_type: 杂志文章
doi:10.3171/jns.1984.60.2.0325
更新日期:1984-02-01 00:00:00
abstract::OBJECTIVEExcessive dissatisfaction and stress among physicians can precipitate burnout, which results in diminished productivity, quality of care, and patient satisfaction and treatment adherence. Given the multiplicity of its harms and detriments to workforce retention and in light of the growing physician shortage, ...
journal_title:Journal of neurosurgery
pub_type: 杂志文章
doi:10.3171/2017.9.JNS17996
更新日期:2018-11-01 00:00:00
abstract::OBJECTIVE Hemangiopericytomas (HPCs) are rare tumors widely recognized for their aggressive clinical behavior, high recurrence rates, and distant and extracranial metastases even after a gross-total resection. The authors report a large multicenter study, through the International Gamma Knife Research Foundation (IGKR...
journal_title:Journal of neurosurgery
pub_type: 杂志文章,多中心研究
doi:10.3171/2016.1.JNS152860
更新日期:2017-03-01 00:00:00
abstract::Thirty-seven patients harboring recurrent malignant primary or metastatic brain tumors were treated by 40 implantations of high-activity iodine-125 (125I) sources. All patients had been treated with irradiation and most had been treated with chemotherapeutic agents, primarily nitrosoureas. Implantations were performed...
journal_title:Journal of neurosurgery
pub_type: 杂志文章
doi:10.3171/jns.1984.60.1.0061
更新日期:1984-01-01 00:00:00
abstract::The authors conducted a study to determine a way of overcoming the poor-quality demonstration of choroidal neovascularization (CNV) associated with age-related macular degeneration (AMD) on conventional magnetic resonance (MR) imaging studies. The poor MR imaging demonstration of CNV in patients with AMD makes the use...
journal_title:Journal of neurosurgery
pub_type: 杂志文章
doi:10.3171/jns.2005.102.s_supplement.0200
更新日期:2005-01-01 00:00:00
abstract::Acute subdural hematoma (SDH) complicates 20% of severe human head injuries and causes death or severe disability in 60% of these cases, due to brain swelling and high intracranial pressure. Although the mechanisms for these phenomena are unknown, previous studies have implicated excitatory amino acid-mediated mechani...
journal_title:Journal of neurosurgery
pub_type: 杂志文章
doi:10.3171/jns.1996.85.4.0655
更新日期:1996-10-01 00:00:00
abstract:OBJECT:Hemangioblastomas (HBs) occur sporadically or as a manifestation of von Hippel-Lindau (VHL) disease. In the majority of VHL-related HBs, inactivation of the VHL tumor suppressor gene (TSG), which is located on chromosome 3p25-26, is found. The VHL gene is assumed to be involved also in the development of sporadi...
journal_title:Journal of neurosurgery
pub_type: 杂志文章
doi:10.3171/jns.2002.97.4.0977
更新日期:2002-10-01 00:00:00
abstract::The President of the American Association of Neurological Surgeons (AANS) reviews formal neurosurgical training in the United States from its inception with one program in 1934 to 1984, with 94 programs and 650 residents. He reports on the 1st year's experience with a national neurosurgical residency matching plan. He...
journal_title:Journal of neurosurgery
pub_type: 杂志文章
doi:10.3171/jns.1984.61.6.0999
更新日期:1984-12-01 00:00:00
abstract::One hundred and eighty-one patients with single aneurysms involving the anterior circulation were treated either by wrapping (60 cases) or clipping (121 cases), and 96.1% of them were followed for 10 years. The rate of early rebleeding (less than 6 months) from wrapped aneurysms was 8.6% (confidence interval 1.4% to 1...
journal_title:Journal of neurosurgery
pub_type: 杂志文章
doi:10.3171/jns.1989.70.6.0841
更新日期:1989-06-01 00:00:00
abstract::OBJECTIVE Access to the third ventricle is a veritable challenge to neurosurgeons. In this context, anatomical and morphometric studies are useful for establishing the limitations and advantages of a particular surgical approach. The transchoroidal approach is versatile and provides adequate exposure of the middle and...
journal_title:Journal of neurosurgery
pub_type: 杂志文章
doi:10.3171/2016.8.JNS16403
更新日期:2017-07-01 00:00:00
abstract::The aim of this study was to determine whether positron emission tomography (PET) with fluorine-18 (18F)-2-deoxyglucose (FDG) can be used as a prognostic test in patients with high-grade cerebral gliomas, regardless of the treatment given. Forty-five patients with astrocytoma Grade III or IV were included in this anal...
journal_title:Journal of neurosurgery
pub_type: 杂志文章
doi:10.3171/jns.1985.62.6.0816
更新日期:1985-06-01 00:00:00
abstract:OBJECT:The goal of this study was to establish a biomathematical model to accurately predict the probability of aneurysm rupture. Biomathematical models incorporate various physical and dynamic phenomena that provide insight into why certain aneurysms grow or rupture. Prior studies have demonstrated that regression mod...
journal_title:Journal of neurosurgery
pub_type: 杂志文章
doi:10.3171/2008.5.17558
更新日期:2009-01-01 00:00:00
abstract:OBJECTIVE:Both endovascular coiling and the Pipeline embolization device (PED) have been shown to be safe and clinically effective for treatment of small (< 10 mm) aneurysms. The authors conducted a comparative effectiveness analysis to compare the utility of these treatment methods in terms of health benefits. METHOD...
journal_title:Journal of neurosurgery
pub_type: 杂志文章
doi:10.3171/2018.8.JNS181080
更新日期:2019-01-11 00:00:00
abstract::OBJECTIVEThe authors' aim in this study was to evaluate placement accuracy and clinical outcomes in patients who underwent implantation of deep brain stimulation devices with the aid of frame-based stereotaxy and intraoperative MRI after induction of general anesthesia.METHODSThirty-three patients with movement disord...
journal_title:Journal of neurosurgery
pub_type: 杂志文章
doi:10.3171/2017.7.JNS171166
更新日期:2018-12-01 00:00:00
abstract::A randomized double-blind placebo-controlled study was carried out to determine whether phenytoin administered soon after injury lessens the incidence of epilepsy in the 1st week after severe head trauma. In this study, 244 patients were randomized into either a phenytoin or placebo group. The patients in the phenytoi...
journal_title:Journal of neurosurgery
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.3171/jns.1983.58.2.0231
更新日期:1983-02-01 00:00:00
abstract::OBJECTIVE Conventional approaches to the atrium of the lateral ventricle may be associated with complications related to direct cortical injury or brain retraction. The authors describe a novel approach to the atrium through a retrosigmoid transtentorial transcollateral sulcus corridor. METHODS Bilateral retrosigmoid ...
journal_title:Journal of neurosurgery
pub_type: 评论,杂志文章
doi:10.3171/2016.3.JNS151289
更新日期:2017-04-01 00:00:00
abstract::The authors of this prospective, single-case study evaluated the potential for functional recovery from chronic spinal cord injury (SCI). The patient was motor complete with minimal and transient sensory perception in the left hemibody. His condition was classified as C-2 American Spinal Injury Association (ASIA) Grad...
journal_title:Journal of neurosurgery
pub_type: 杂志文章
doi:10.3171/spi.2002.97.2.0252
更新日期:2002-09-01 00:00:00
abstract::The authors present the case of a 68-year-old man who experienced acute obstructive hydrocephalus after having suffered an infarction in the occipital lobe. Histopathological and serial neuroimaging examinations revealed that portions of a large disintegrating occipital infarct had entered the lateral ventricle and ob...
journal_title:Journal of neurosurgery
pub_type: 杂志文章
doi:10.3171/jns.2001.95.1.0119
更新日期:2001-07-01 00:00:00
abstract::Neurosurgery has played an important role in the development of neuroscience and the science of consciousness. In this paper, the authors reflect on some of the historical contributions of neurosurgeons to the science of consciousness and discuss the ways in which clinical neurosurgery can contribute to the science of...
journal_title:Journal of neurosurgery
pub_type: 历史文章,杂志文章
doi:10.3171/2012.6.JNS112136
更新日期:2012-09-01 00:00:00
abstract:OBJECT:Surgery in the insular region is considered challenging because of its vascular relationships, the proximity of functional structures, and its deep location in the sylvian fissure. The authors report the incidence and consequences of ischemic lesions after operculoinsular corticectomy for refractory epilepsy. M...
journal_title:Journal of neurosurgery
pub_type: 杂志文章
doi:10.3171/2014.10.JNS141246
更新日期:2015-06-01 00:00:00
abstract::Experience indicates that stand-alone cages may lack the necessary stability to secure highly unstable motion segments at the lumbosacral junction. The authors have designed a special carbon fiber composite interbody cage that allows additional screw placement in anterior lumbar interbody fusion procedures performed a...
journal_title:Journal of neurosurgery
pub_type: 杂志文章
doi:10.3171/spi.2003.98.2.0222
更新日期:2003-03-01 00:00:00
abstract::A patient with hydrocephalus due to aqueductal stenosis suffered facial pain which was relieved after the insertion of a ventriculoperitoneal shunt. The trigeminal somatosensory evoked response (TSER) of the affected side showed lower amplitudes and longer latencies as compared to the unaffected side. Following surger...
journal_title:Journal of neurosurgery
pub_type: 杂志文章
doi:10.3171/jns.1982.57.2.0267
更新日期:1982-08-01 00:00:00
abstract::Two patients with chronic spinal subdural hematomas are described. Both had a fluctuating clinical course, not previously documented in the literature. Surgical evacuation resulted in almost complete recovery. The pathogenesis of spinal subdural hematoma is discussed and the pertinent literature is reviewed. ...
journal_title:Journal of neurosurgery
pub_type: 杂志文章
doi:10.3171/jns.1985.63.4.0636
更新日期:1985-10-01 00:00:00
abstract:OBJECTIVE:The objective of this study was to demonstrate the feasibility and safety of CorPath GRX robotic-assisted (RA) transradial (TR) carotid artery stenting (CAS) compared with manual TR CAS. METHODS:The authors conducted a retrospective analysis of a prospectively maintained database and identified 13 consecutiv...
journal_title:Journal of neurosurgery
pub_type: 杂志文章
doi:10.3171/2020.5.JNS201421
更新日期:2020-08-28 00:00:00
abstract::The authors report on the case of a 6-year-old boy who underwent resection of a midline cerebellar tumor. The boy was able to speak fluently after the operation. Magnetic resonance (MR) imaging showed that the right dentate nucleus had been partially removed along with the tumor, but that the left dentate nucleus rema...
journal_title:Journal of neurosurgery
pub_type: 杂志文章
doi:10.3171/jns.2006.104.2.329
更新日期:2006-02-01 00:00:00
abstract:OBJECTIVE:Ossification of pterygoalar and pterygospinous ligaments traversing the superior aspect of the infratemporal fossa results in formation of osseous bars that can obstruct percutaneous needle access to the trigeminal ganglion through the foramen ovale (FO), interfere with lateral mandibular nerve block, and imp...
journal_title:Journal of neurosurgery
pub_type: 杂志文章
doi:10.3171/2019.2.JNS182709
更新日期:2019-05-10 00:00:00