scholarly journals Mapping and anatomo-surgical techniques for SMA-cingulum-corpus callosum gliomas; how I do it

2021 ◽  
Author(s):  
Dimitris Klitsinikos ◽  
Justyna O. Ekert ◽  
Annefloor Carels ◽  
George Samandouras
Keyword(s):  
Corpus Callosum ◽  
Vascular Injury ◽  
Brain Mapping ◽  
Cognitive Functions ◽  
Early Identification ◽  
Surgical Techniques ◽  
Interhemispheric Approach ◽  
Full Protection

Abstract Background Awake brain mapping paradigms are variable, particularly in SMA, and not personalised to each patient. In addition, subpial resections do not offer full protection to vascular injury, as the pia can be easily violated. Methods Mapping paradigms developed by a multidisciplinary brain mapping team. During resection, a combined subpial/interhemispheric approach allowed early identification and arterial skeletonization. Precise anatomo-surgical dissection of the affected cingulum and corpus callosum was achieved. Conclusions In SMA-cingulum-CC tumours, a combined subpial/interhemispheric approach reduces risk of vascular injury allowing precise anatomo-surgical dissections. Knowledge of cognitive functions of affected parcels is likely to offer best outcomes.

Interhemispheric approach with callosal resection for distal anterior cerebral artery aneurysms

1992 ◽  
Vol 77 (3) ◽  
pp. 481-483 ◽  
Author(s):  
Vincent C. Traynelis ◽  
Ralph O. Dunker
Keyword(s):  
Corpus Callosum ◽  
Cerebral Artery ◽  
Early Identification ◽  
Anterior Cerebral Artery ◽  
Feeding Artery ◽  
Content Type ◽  
Interhemispheric Approach ◽  
Interhemispheric Fissure ◽  
Distal Anterior Cerebral Artery ◽  
Fine Print

✓ Distal anterior cerebral artery aneurysms are commonly found near the genu of the corpus callosum. While these aneurysms may be surgically obliterated through a variety of approaches, exposure via the interhemispheric fissure is used by many surgeons. Early identification of the afferent artery may be difficult with this approach, however, particularly if the aneurysm lies just beneath the genu of the corpus callosum. The authors have modified the interhemispheric approach to distal anterior cerebral artery aneurysms by electively exposing the feeding artery through a small anterior callosotomy. While this maneuver is not necessary for all distal anterior cerebral artery aneurysms, it can greatly enhance exposure in the region just below the genu of the corpus callosum. Experience with this technique in five patients is reported. In all cases, the limited anterior callosotomy enhanced surgical exposure. No morbidity could be attributed to the callosotomy in any patient. It is concluded that, when the interhemispheric approach is used, anterior callosotomy improves exposure of the region just below the genu of the corpus callosum and may be a useful maneuver when treating distal anterior cerebral artery aneurysms.

Interhemispheric approach for the surgical removal of thalamocaudate arteriovenous malformations

1987 ◽  
Vol 66 (3) ◽  
pp. 345-351 ◽  
Author(s):  
Robert A. Solomon ◽  
Bennett M. Stein
Keyword(s):  
Corpus Callosum ◽  
Arteriovenous Malformations ◽  
Surgical Removal ◽  
Cerebral Arteriovenous Malformations ◽  
Total Removal ◽  
Recurrent Hemorrhage ◽  
Content Type ◽  
Interhemispheric Approach ◽  
Parinaud’S Syndrome ◽  
Fine Print

✓ A series of 250 surgically treated cerebral arteriovenous malformations (AVM's) is presented, in which 22 lesions were located primarily in the thalamus and caudate nucleus. A standardized interhemispheric approach through the posterior corpus callosum and into the atrium of the lateral ventricle was utilized for the surgical removal of these AVM's. Total removal was confirmed by angiography in 18 patients; removal was subtotal in four cases. There were no deaths in this group of patients. Disturbances of recent memory pre- and postoperatively were seen in half of the patients, but most of these deficits were temporary. Other complications included: postoperative homonymous hemianopsia (six cases), transient hemiparesis (three cases), hemisensory loss (two cases), Parinaud's syndrome (one case), and recurrent hemorrhage 2 years after surgery (one case). All 22 patients returned to their previous occupations and are leading independent lives. The results of this experience indicate that thalamocaudate AVM's can be effectively treated by resection.

scholarly journals Individual Brain Charting, a high-resolution fMRI dataset for cognitive mapping

2018 ◽  
Vol 5 (1) ◽  
Author(s):  
Ana Luísa Pinho ◽  
Alexis Amadon ◽  
Torsten Ruest ◽  
Murielle Fabre ◽  
Elvis Dohmatob ◽  
...  
Keyword(s):  
High Resolution ◽  
Brain Mapping ◽  
Cognitive Functions ◽  
Cognitive Mapping ◽  
Functional Magnetic Resonance ◽  
Resonance Imaging ◽  
Cognitive Mechanisms ◽  
Precise Mapping ◽  
Objective Basis ◽  
High Level

Abstract Functional Magnetic Resonance Imaging (fMRI) has furthered brain mapping on perceptual, motor, as well as higher-level cognitive functions. However, to date, no data collection has systematically addressed the functional mapping of cognitive mechanisms at a fine spatial scale. The Individual Brain Charting (IBC) project stands for a high-resolution multi-task fMRI dataset that intends to provide the objective basis toward a comprehensive functional atlas of the human brain. The data refer to a cohort of 12 participants performing many different tasks. The large amount of task-fMRI data on the same subjects yields a precise mapping of the underlying functions, free from both inter-subject and inter-site variability. The present article gives a detailed description of the first release of the IBC dataset. It comprises a dozen of tasks, addressing both low- and high- level cognitive functions. This openly available dataset is thus intended to become a reference for cognitive brain mapping.

scholarly journals Development and plasticity of the corpus callosum

Development ◽  
2020 ◽  
Vol 147 (18) ◽  
pp. dev189738 ◽  
Author(s):  
Noelia S. De León Reyes ◽  
Lorena Bragg-Gonzalo ◽  
Marta Nieto
Keyword(s):  
Animal Models ◽  
Corpus Callosum ◽  
Cognitive Functions ◽  
Sensory Integration ◽  
Congenital Malformations ◽  
Early Period ◽  
Cerebral Hemispheres ◽  
Temporal Window ◽  
Species Comparisons ◽  
Higher Cognitive Functions

ABSTRACTThe corpus callosum (CC) connects the cerebral hemispheres and is the major mammalian commissural tract. It facilitates bilateral sensory integration and higher cognitive functions, and is often affected in neurodevelopmental diseases. Here, we review the mechanisms that contribute to the development of CC circuits in animal models and humans. These species comparisons reveal several commonalities. First, there is an early period of massive axonal projection. Second, there is a postnatal temporal window, varying between species, in which early callosal projections are selectively refined. Third, sensory-derived activity influences axonal refinement. We also discuss how defects in CC formation can lead to mild or severe CC congenital malformations.

Virtual Reality-assisted awake brain mapping. (Preprint)

2021 ◽  
Author(s):  
Florian Bernard ◽  
Morgane Casanova ◽  
Anne Clavreul ◽  
Ghislaine Aubin ◽  
Gwenaelle Soulard ◽  
...  
Keyword(s):  
Virtual Reality ◽  
Social Cognition ◽  
Visual Field ◽  
Brain Mapping ◽  
Cognitive Functions ◽  
Total Duration ◽  
Spatial Neglect ◽  
Brain Surgery ◽  
Duration Of Surgery ◽  
The Mean

BACKGROUND Preserving major cognitive functions, such as visuo-spatial and social cognition in the surgical management of brain tumors could be decisive for the postoperative quality of life. Using virtual reality during awake brain surgery appears to be interesting for preserving complex cognitive functions. Developing neuropsychological tasks appropriate for use during awake brain surgery using virtual reality technology is challenging. OBJECTIVE In this paper, we describe our preliminary experience of extending progressively complex cognitive paradigms via dynamic VR environments during 68 peri-operative brain mapping. METHODS This is a single center, retrospective longitudinal study, concerning two cohorts. RESULTS A total of 65 patients (30 women, mean age 49.7, range 23-75) operated with VR-assisted Brain mapping were included. At least one VR task (VR-DO 80, VR Estermann or VR-TANGO task) during DES were done for all the patients. The mean duration of surgery was 4 h 30 min, the mean duration of the awake phase was 2 h 15 min. The mean intensity used for DES was 3 mA (Intensity from 0,5 to 8 mA). Mean total duration of VRH use per patient at 16 min (from 10 to 37 min). VR task allowed to preserve language, visual field, visuospatial and social cognition in our serie. CONCLUSIONS We show through illustrative cases how VR opens new possibilities for the mapping of complex cognitive functions within the operating theater. CLINICALTRIAL ClinicalTrials.gov NCT03010943Virtual reality; awake neurosurgery; visual field; social cognition; visuospatial cognition; unilateral spatial neglect. INTERNATIONAL REGISTERED REPORT RR2-10.2196/10332.

scholarly journals Craniofacial Trauma and Vascular Injury

2021 ◽  
Vol 38 (01) ◽  
pp. 045-052
Author(s):  
Megan M. Bernath ◽  
Sunu Mathew ◽  
Jerry Kovoor
Keyword(s):  
Vascular Injury ◽  
Early Identification ◽  
Endovascular Embolization ◽  
Acute Management ◽  
Cerebrovascular Injury ◽  
Different Types ◽  
Craniofacial Trauma ◽  
Surrounding Areas ◽  
Carotid Cavernous Fistulas ◽  
Vessel Rupture

AbstractCerebrovascular injury is a potentially devastating outcome following craniofacial trauma. Interventional radiologists play an important role in detecting, grading, and treating the different types of vascular injury. Computed tomography angiography plays a significant role in the detection of these injuries. Carotid-cavernous fistulas, extra-axial hematomas, pseudoaneurysms, and arterial lacerations are rare vessel injuries resulting from craniofacial trauma. If left untreated, these injuries can lead to vessel rupture and hemorrhage into surrounding areas. Acute management of these vessel injuries includes early identification with angiography and treatment with endovascular embolization. Endovascular therapy resolves vessel abnormalities and reduces the risk of vessel rupture and associated complications.

Vascular complications in anterior thoracolumbar spinal reconstruction

2002 ◽  
Vol 96 (1) ◽  
pp. 1-5 ◽  
Author(s):  
Rod J. Oskouian ◽  
J. Patrick Johnson
Keyword(s):  
Vascular Injury ◽  
Reconstructive Surgery ◽  
Spinal Surgery ◽  
Surgical Techniques ◽  
Vascular Complications ◽  
Reconstructive Procedures ◽  
Content Type ◽  
Spinal Reconstruction ◽  
Lumbar Spinal ◽  
Fine Print

Object. Anterior approaches in thoracic and lumbar spinal surgery have potentially serious vascular injury—related complications. In this study the authors evaluate the incidence of vascular complications in anterior approaches to the thoracic and lumbar spine in cases requiring reconstructive surgery. Methods. The authors retrospectively reviewed the medical records of 207 patients who underwent anterior thoracic and lumbar spinal reconstructive surgery during the period from 1992 through 1999 to determine the incidence, causes, and management of vascular complications. Overall, the incidence of vascular complications following reconstructive spinal surgery was 5.8% (12 patients) and the mortality rate was 1% (two patient deaths). In seven patients (3.4%), direct vascular injuries developed as a result of surgical techniques or error; one patient died as a result. Five patients (2.4%) developed deep venous thromboses, and one patient in this subgroup died of pulmonary embolism. Conclusions. Vascular injury to the great vessels is a known and potentially serious complication associated with anterior spinal reconstructive procedures. The authors found, however, that the incidence is relatively low in cases in which venous injuries occurred acutely and arterial injuries presented in a delayed fashion.

scholarly journals Endoscopic posterior interhemispheric complete corpus callosotomy

2016 ◽  
Vol 18 (6) ◽  
pp. 689-692 ◽  
Author(s):  
Sandeep Sood ◽  
Eishi Asano ◽  
Deniz Altinok ◽  
Aimee Luat
Keyword(s):  
Corpus Callosum ◽  
Coronal Suture ◽  
Corpus Callosotomy ◽  
Interhemispheric Approach ◽  
Interhemispheric Fissure

Traditionally corpus callosotomy is done through a craniotomy centered at the coronal suture, with the aid of a microscope. This involves dissecting through the interhemispheric fissure below the falx to reach the corpus callosum. The authors describe a posterior interhemispheric approach to complete corpus callosotomy with an endoscope, which bypasses the need to perform interhemispheric dissection because the falx is generally close to the corpus callosum in this region.

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