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vascular neurosurgery

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https://www.readbyqxmd.com/read/28325443/vascular-segmentation-of-head-phase-contrast-magnetic-resonance-angiograms-using-grayscale-and-shape-features
#1
Ruoxiu Xiao, Hui Ding, Fangwen Zhai, Tong Zhao, Wenjing Zhou, Guangzhi Wang
BACKGROUND AND OBJECTIVE: In neurosurgery planning, vascular structures must be predetermined, which can guarantee the security of the operation carried out in the case of avoiding blood vessels. In this paper, an automatic algorithm of vascular segmentation, which combined the grayscale and shape features of the blood vessels, is proposed to extract 3D vascular structures from head phase-contrast magnetic resonance angiography dataset. METHODS: First, a cost function of mis-segmentation is introduced on the basis of traditional Bayesian statistical classification, and the blood vessel of weak grayscale that tended to be misclassified into background will be preserved...
April 2017: Computer Methods and Programs in Biomedicine
https://www.readbyqxmd.com/read/28303207/management-strategies-for-neoplastic-and-vascular-brain-lesions-presenting-during-pregnancy-a-series-of-29-patients
#2
Celestino Esteves Pereira, Jose Carlos Lynch
BACKGROUND: The occurrence of a brain tumor or intracranial vascular lesion during pregnancy is a rare event, but when it happens, it jeopardizes the lives of both the mother and infant. It also creates challenges of a neurosurgical, obstetric, and ethical nature. A multidisciplinary approach should be used for their care. METHODS: Between 1986 and 2015, 12 pregnant women diagnosed with brain tumors and 17 women with intracranial vascular lesion underwent treatment at the Neurosurgery Department of the Servidores do Estado Hospital and Rede D'Or/São Luis...
2017: Surgical Neurology International
https://www.readbyqxmd.com/read/28257502/treatment-of-ruptured-intracranial-aneurysms-yesterday-and-now
#3
Alexander Hammer, Anahi Steiner, Ghassan Kerry, Gholamreza Ranaie, Ingrid Baer, Christian M Hammer, Stefan Kunze, Hans-Herbert Steiner
OBJECTIVE: This prospective study is designed to detect changes in the treatment of ruptured intracranial aneurysms over a period of 17 years. METHODS: We compared 361 treated cases of aneurysm occlusion after subarachnoid hemorrhage from 1997 to 2003 with 281 cases from 2006 to 2014. Specialists of neuroradiology and vascular neurosurgery decided over the modality assignment. We established a prospective data acquisition in both groups to detect significant differences within a follow-up time of one year...
2017: PloS One
https://www.readbyqxmd.com/read/28176963/expressive-aphasia-caused-by-streptococcus-intermedius-brain-abscess-in-an-immunocompetent-patient
#4
Misbahuddin Khaja, Darryl Adler, George Lominadze
BACKGROUND: Brain abscess is an uncommon but life-threatening infection. It involves a focal, intracerebral infection that begins in a localized area of cerebritis and develops into a collection of pus, surrounded by a well-vascularized capsule. Brain abscess still poses a significant problem in developing countries but rarely in developed countries. Predisposing factors vary in different parts of the world. With the introduction of antibiotics and imaging studies, the mortality rate has decreased between 5% and 15%...
2017: International Medical Case Reports Journal
https://www.readbyqxmd.com/read/28133560/endoscopic-resection-of-skull-base-teratoma-in-klippel-feil-syndrome-through-use-of-combined-ultrasonic-and-bipolar-diathermy-platforms
#5
Justin A Edward, Alkis J Psaltis, Ryan A Williams, Gregory W Charville, Robert L Dodd, Jayakar V Nayak
Klippel-Feil syndrome (KFS) is associated with numerous craniofacial abnormalities but rarely with skull base tumor formation. We report an unusual and dramatic case of a symptomatic, mature skull base teratoma in an adult patient with KFS, with extension through the basisphenoid to obstruct the nasopharynx. This benign lesion was associated with midline palatal and cerebral defects, most notably pituitary and vertebrobasilar arteriolar duplications. A multidisciplinary workup and a complete endoscopic, transnasal surgical approach between otolaryngology and neurosurgery were undertaken...
2017: Case Reports in Otolaryngology
https://www.readbyqxmd.com/read/28120046/music-and-mind-in-memoriam-professor-carlo-alberto-pagni-md-phd-february-13-1931-march-1-2009
#6
Klaus R H von Wild
Carlo Alberto Pagni, born in La Spezia, Italy, on February 13, 1931, was an eminent and respected professor of neurosurgery and chairman of the neurosurgical clinic of the University of Turin from 1980 to 2003. He died on March 1, 2009. As a professor of neurology and neurological surgery he was renowned as an expert on vascular, tumor, and functional neurosurgery. Beyond the Italian Neurosurgical Society, he was the doyen of functional neurosurgery, specializing in motor cortex stimulation for the treatment of focal dystonia, Parkinson's disease, and postictal spasticity and pain...
2017: Acta Neurochirurgica. Supplement
https://www.readbyqxmd.com/read/28120045/reconstructive-neurosurgery-a-challenge
#7
Massimiliano Visocchi
The International Society of Reconstructive Neurosurgery (ISRN) is an "open" multidisciplinary Society in evolution. Many different members of the Society inspire new trends in many different neurosurgical fields, all dealing with neurosurgical reconstruction.Spine and peripheral nerve reconstructive surgery, central nervous system revascularization (via surgery and interventional radiology), neuromodulation, bioengineering, and transplantation are recent tools used to promote reconstruction, restoration, and rehabilitation...
2017: Acta Neurochirurgica. Supplement
https://www.readbyqxmd.com/read/28112550/intraoperative-multi-exposure-speckle-imaging-of-cerebral-blood-flow
#8
Lisa M Richards, Sm Shams Kazmi, Katherine E Olin, James S Waldron, Douglas J Fox, Andrew K Dunn
Multiple studies have demonstrated that laser speckle contrast imaging (LSCI) has high potential to be a valuable cerebral blood flow monitoring technique during neurosurgery. However, the quantitative accuracy and sensitivity of LSCI is limited, and highly dependent on the exposure time. An extension to LSCI called multi-exposure speckle imaging (MESI) overcomes these limitations, and was evaluated intraoperatively in patients undergoing brain tumor resection. This clinical study ( n = 8) recorded multiple exposure times from the same cortical tissue area spanning 0...
January 1, 2017: Journal of Cerebral Blood Flow and Metabolism
https://www.readbyqxmd.com/read/28106498/performing-concurrent-operations-in-academic-vascular-neurosurgery-does-not-affect-patient-outcomes
#9
Corinna C Zygourakis, Janelle Lee, Julio Barba, Errol Lobo, Michael T Lawton
OBJECTIVE Concurrent surgeries, also known as "running two rooms" or simultaneous/overlapping operations, have recently come under intense scrutiny. The goal of this study was to evaluate the operative time and outcomes of concurrent versus nonconcurrent vascular neurosurgical procedures. METHODS The authors retrospectively reviewed 1219 procedures performed by 1 vascular neurosurgeon from 2012 to 2015 at the University of California, San Francisco. Data were collected on patient age, sex, severity of illness, risk of mortality, American Society of Anesthesiologists (ASA) status, procedure type, admission type, insurance, transfer source, procedure time, presence of resident or fellow in operating room (OR), number of co-surgeons, estimated blood loss (EBL), concurrent vs nonconcurrent case, severe sepsis, acute respiratory failure, postoperative stroke causing neurological deficit, unplanned return to OR, 30-day mortality, and 30-day unplanned readmission...
January 20, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28048837/mo-de-202-01-image-guided-focused-ultrasound-surgery-and-therapy
#10
K Farahani
At least three major trends in surgical intervention have emerged over the last decade: a move toward more minimally invasive (or non-invasive) approach to the surgical target; the development of high-precision treatment delivery techniques; and the increasing role of multi-modality intraoperative imaging in support of such procedures. This symposium includes invited presentations on recent advances in each of these areas and the emerging role for medical physics research in the development and translation of high-precision interventional techniques...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28048186/mo-de-202-02-advances-in-image-registration-and-reconstruction-for-image-guided-neurosurgery
#11
J Siewerdsen
At least three major trends in surgical intervention have emerged over the last decade: a move toward more minimally invasive (or non-invasive) approach to the surgical target; the development of high-precision treatment delivery techniques; and the increasing role of multi-modality intraoperative imaging in support of such procedures. This symposium includes invited presentations on recent advances in each of these areas and the emerging role for medical physics research in the development and translation of high-precision interventional techniques...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28047534/mo-de-202-03-image-guided-surgery-and-interventions-in-the-advanced-multimodality-image-guided-operating-amigo-suite
#12
T Kapur
At least three major trends in surgical intervention have emerged over the last decade: a move toward more minimally invasive (or non-invasive) approach to the surgical target; the development of high-precision treatment delivery techniques; and the increasing role of multi-modality intraoperative imaging in support of such procedures. This symposium includes invited presentations on recent advances in each of these areas and the emerging role for medical physics research in the development and translation of high-precision interventional techniques...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28046879/mo-de-202-04-multimodality-image-guided-surgery-and-intervention-for-the-rest-of-us
#13
R Shekhar
At least three major trends in surgical intervention have emerged over the last decade: a move toward more minimally invasive (or non-invasive) approach to the surgical target; the development of high-precision treatment delivery techniques; and the increasing role of multi-modality intraoperative imaging in support of such procedures. This symposium includes invited presentations on recent advances in each of these areas and the emerging role for medical physics research in the development and translation of high-precision interventional techniques...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28046773/mo-de-202-00-image-guided-interventions-advances-in-intraoperative-imaging-guidance-and-an-emerging-role-for-medical-physics-in-surgery
#14
Jeffrey Siewerdsen
At least three major trends in surgical intervention have emerged over the last decade: a move toward more minimally invasive (or non-invasive) approach to the surgical target; the development of high-precision treatment delivery techniques; and the increasing role of multi-modality intraoperative imaging in support of such procedures. This symposium includes invited presentations on recent advances in each of these areas and the emerging role for medical physics research in the development and translation of high-precision interventional techniques...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/27992624/association-of-perioperative-statin-use-with-mortality-and-morbidity-after-major-noncardiac-surgery
#15
Martin J London, Gregory G Schwartz, Kwan Hur, William G Henderson
Importance: The efficacy of statins in reducing perioperative cardiovascular and other organ system complications in patients undergoing noncardiac surgery remains controversial. Owing to a paucity of randomized clinical trials, analyses of large databases may facilitate informed hypothesis generation and more efficient trial design. Objective: To evaluate associations of early perioperative statin use with outcomes in a national cohort of veterans undergoing noncardiac surgery...
February 1, 2017: JAMA Internal Medicine
https://www.readbyqxmd.com/read/27989976/ultrasonography-monitoring-with-superb-microvascular-imaging-technique-in-brain-tumor-surgery
#16
Mami Ishikawa, Yasushi Ota, Mutsumi Nagai, Gen Kusaka, Yuichi Tanaka, Heiji Naritaka
BACKGROUND: Neuronavigation based on preoperative magnetic resonance imaging has been developed as a useful tool to improve visibility of the surgical site in the operative field. Ultrasonography (US) monitoring has also been used as a reliable imaging technique, providing real-time information during neurosurgical operations. We combined the latest innovative imaging technique for detecting very low-flow components, Superb Microvascular Imaging (SMI), with US monitoring during brain tumor surgery...
January 2017: World Neurosurgery
https://www.readbyqxmd.com/read/27916035/-microsurgical-management-and-outcomes-of-intramedullary-spinal-arteriovenous-malformations-a-report-of-14-cases
#17
L Zhang, W Q Jia, J Yang
Objective: To investigate the clinical features, microsurgical management and outcomes of intramedullary spinal arteriovenous malformations (AVM). Methods: A series of 14 patients (10 male, 4 female; mean age (39.1±17.2) years ranged from 16 to 72 years) with intramedullary spinal AVM who underwent microsurgical treatment from November 2008 to April 2015 in Department of Neurosurgery at Beijing Tiantan Hospital were retrospectively reviewed. The location of the AVM included cervical (n=6), thoracic (n=3), cervicothoracic (n=2), and conus medullaris (n=3)...
December 1, 2016: Zhonghua Wai Ke za Zhi [Chinese Journal of Surgery]
https://www.readbyqxmd.com/read/27889267/attribution-2-0-whose-complication-is-it
#18
Greg Hambright, Theresa Jackson, Vaidehi Agrawal, Antonio Arazosa, Benjamin Newman, Michael S Truitt
BACKGROUND: Payment models aimed at improving quality and curbing costs are being deployed, and hospitals are evaluating complications more closely. To decrease complications, hospitals must first "attribute" them to a responsible party. Our study uses a rigorous approach to attribution in the trauma population. METHODS: Twelve months of complications were reviewed by a multidisciplinary panel. Physicians, patients, nursing, and the hospital were all incorporated into the model...
December 2016: American Journal of Surgery
https://www.readbyqxmd.com/read/27813463/bypass-surgery-for-complex-middle-cerebral-artery-aneurysms-an-algorithmic-approach-to-revascularization
#19
Ali Tayebi Meybodi, Wendy Huang, Arnau Benet, Olivia Kola, Michael T Lawton
OBJECT Management of complex aneurysms of the middle cerebral artery (MCA) can be challenging. Lesions not amenable to endovascular techniques or direct clipping might require a bypass procedure with aneurysm obliteration. Various bypass techniques are available, but an algorithmic approach to classifying these lesions and determining the optimal bypass strategy has not been developed. The objective of this study was to propose a comprehensive and flexible algorithm based on MCA aneurysm location for selecting the best of multiple bypass options...
November 4, 2016: Journal of Neurosurgery
https://www.readbyqxmd.com/read/27713067/clinical-experience-with-intraoperative-ultrasonographic-image-in-microsurgical-resection-of-cerebral-arteriovenous-malformations
#20
Hongzhi Xu, Zhiyong Qin, Ming Xu, Chunjui Chen, Junjie Zhang, Xiancheng Chen
BACKGROUND: Intraoperative ultrasonography is widely used in neurosurgery for the management of intracerebral hematoma and brain tumor. However, the clinical value of this method in the surgery of cerebral arteriovenous malformations (AVMs) has not been reported. In this study, the application of intraoperative ultrasonography for AVM surgery was evaluated prospectively. METHODS: This prospective clinical study comprised 41 patients who underwent microsurgical resection of cerebral AVMs at our institute...
January 2017: World Neurosurgery
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