scholarly journals The role of awake craniotomy in reducing intraoperative visual field deficits during tumor surgery

2015 ◽  
Vol 10 (3) ◽  
pp. 139 ◽  
Author(s):  
RicardoJ. Komotar ◽  
Racheal Wolfson ◽  
Neil Soni ◽  
AshishH. Shah ◽  
Ananth Sastry ◽  
...  
Keyword(s):  
Visual Field ◽  
Awake Craniotomy ◽  
Tumor Surgery ◽  
Visual Field Deficits

scholarly journals Optic nerve compression in craniopharyngioma by taut anterior cerebral arteries visualized in frontal and transsphenoidal exposures: illustrative cases

2022 ◽  
Vol 3 (3) ◽  
Keyword(s):  
Optic Nerve ◽  
Visual Field ◽  
Pediatric Patients ◽  
Anterior Cerebral Artery ◽  
Cerebral Arteries ◽  
Initial Exposure ◽  
Visual Deficits ◽  
Visual Field Deficits ◽  
Optic Nerve Compression

BACKGROUND During initial exposure and removal of craniopharyngioma in pediatric patients with severe visual field deficits, the authors have encountered severe deformation of the optic apparatus by taut anterior cerebral arteries as seen during both frontal craniotomy and transsphenoidal exposures. OBSERVATIONS The authors report two pediatric patients with craniopharyngioma whose severe preoperative visual deficits were associated not only with large suprasellar masses but also with severe optic nerve and chiasm compression by taut anterior cerebral arteries. In each patient, the optic nerves were partially cleft by these vessels’ indenting them. LESSONS The role of a taut anterior cerebral artery complex in compression of the optic apparatus in patients with suprasellar tumors has been reported previously, but the intraoperative images in these two cases dramatically reveal this phenomenon.

Role of Perioperative Factor XIII in Intracerebral Hemorrhage after Brain Tumor Surgery: A Prospective Study

2019 ◽  
Author(s):  
Estela Val Jordan ◽  
Agustín Nebra Puertas ◽  
Juan Casado Pellejero ◽  
Maria Dolores Vicente Gordo ◽  
Concepción Revilla López ◽  
...  
Keyword(s):  
Brain Tumor ◽  
Intracerebral Hemorrhage ◽  
Prospective Study ◽  
Factor Xiii ◽  
Tumor Surgery ◽  
Brain Tumor Surgery ◽  
A Prospective Study

scholarly journals MS-1 Surgical strategy for brain tumor based on molecular and functional connectomics profiles

2020 ◽  
Vol 2 (Supplement_3) ◽  
pp. ii2-ii2
Author(s):  
Tatsuya Abe
Keyword(s):  
Overall Survival ◽  
Brain Tumor ◽  
Standard Procedure ◽  
Awake Craniotomy ◽  
Surgical Strategy ◽  
Neurological Deficits ◽  
Cortical Mapping ◽  
Photodynamic Diagnosis ◽  
Tumor Surgery ◽  
Brain Tumor Surgery

Abstract It is reported that the development of new perioperative motor deficits was associated with decreased overall survival despite similar extent of resection and adjuvant therapy. The maximum safe resection without any neurological deficits is required to improve overall survival in patients with brain tumor. Surgery is performed with various modalities, such as neuro-monitoring, photodynamic diagnosis, neuro-navigation, awake craniotomy, intraoperative MRI, and so on. Above all, awake craniotomy technique is now the standard procedure to achieve the maximum safe resection in patients with brain tumor. It is well known that before any treatment, gliomas generate globally (and not only focally) altered functional connectomics profiles, with various patterns of neural reorganization allowing different levels of cognitive compensation. Therefore, perioperative cortical mapping and elucidation of functional network, neuroplasticity and reorganization are important for brain tumor surgery. On the other hand, recent studies have proposed several gene signatures as biomarkers for different grades of gliomas from various perspectives. Then, we aimed to identify these biomarkers in pre-operative and/or intra-operative periods, using liquid biopsy, immunostaining and various PCR methods including rapid genotyping assay. In this presentation, we would like to demonstrate our surgical strategy based on molecular and functional connectomics profiles.

The Psychologist-Educator Views the Relationship of Vision to Reading and Related Learning Disabilities

1981 ◽  
Vol 14 (10) ◽  
pp. 565-567 ◽  
Author(s):  
Jules C. Abrams
Keyword(s):  
Learning Disabilities ◽  
Visual Field ◽  
Visual Perception ◽  
Learning Disability ◽  
Visual Defects ◽  
Considerable Controversy ◽  
Visual Problems ◽  
Relationship Of ◽  
The Relationship

The role of visual problems in learning disability has been a source of considerable controversy for many years. One major issue in the continuing argument is the frequent confusion of labels and concepts in the visual field. It is important to view vision as a psychophysiologic mechanism and to differentiate it from a mechanistic orientation emphasizing the eyes. Most visual problems related to learning disability represent a breakdown in the ability of the eyes to function in an harmonious fashion, that is, some interference in binocular function. While visual defects should not be confused with defects in visual perception, the identification and treatment of visual problems is an important element in the diagnosis and remediation of learning disabilities.

scholarly journals Do visual field deficits exacerbate visuo-spatial neglect?

1990 ◽  
Vol 53 (6) ◽  
pp. 487-491 ◽  
Author(s):  
P W Halligan ◽  
J C Marshall ◽  
D T Wade
Keyword(s):  
Visual Field ◽  
Spatial Neglect ◽  
Visual Field Deficits

Red Desaturation and Visual Field Deficits in Detecting Chiasmopathy in Patients with Nonfunctioning Pituitary Macroadenoma

2011 ◽  
pp. P1-430-P1-430
Author(s):  
Emily Shortridge ◽  
Brian Kim ◽  
William White ◽  
Andrew Little ◽  
Kristina Chapple ◽  
...  
Keyword(s):  
Visual Field ◽  
Pituitary Macroadenoma ◽  
Visual Field Deficits

Optic radiation tractography integrated into simulated treatment planning for Gamma Knife surgery

2007 ◽  
Vol 107 (4) ◽  
pp. 721-726 ◽  
Author(s):  
Keisuke Maruyama ◽  
Kyousuke Kamada ◽  
Masahiro Shin ◽  
Daisuke Itoh ◽  
Yoshitaka Masutani ◽  
...  
Keyword(s):  
Visual Field ◽  
Treatment Planning ◽  
Gamma Knife ◽  
Diffusion Tensor ◽  
Maximum Dose ◽  
Gamma Knife Surgery ◽  
Optic Radiation ◽  
Imaging Studies ◽  
Visual Field Deficits ◽  
Neurological Change

Object No definitive method of preventing visual field deficits after stereotactic radiosurgery for lesions near the optic radiation (OR) has been available so far. The authors report the results of integrating OR tractography based on diffusion tensor (DT) magnetic resonance imaging into simulated treatment planning for Gamma Knife surgery (GKS). Methods Data from imaging studies performed in 10 patients who underwent GKS for treatment of arteriovenous malformations (AVMs) located adjacent to the OR were used for the simulated treatment planning. Diffusion tensor images performed without the patient's head being secured by a stereotactic frame were used for DT tractography, and the OR was visualized by means of software developed by the authors. Data from stereotactic 3D imaging studies performed after frame fixation were coregistered with the data from DT tractography. The combined images were transferred to a GKS treatment-planning workstation. Delivered doses and distances between the treated lesions and the OR were analyzed and correlated with posttreatment neurological changes. Results In patients presenting with migraine with visual aura or occipital lobe epilepsy, the OR was located within 11 mm from AVMs. In a patient who developed new quadrantanopia after GKS, the OR had received 32 Gy. A maximum dose to the OR of less than 12 Gy did not cause new visual field deficits. A maximum dose to the OR of 8 Gy or more was significantly related to neurological change (p < 0.05), including visual field deficits and development or improvement of migraine. Conclusions Integration of OR tractography into GKS represents a promising tool for preventing GKS-induced visual disturbances and headaches. Single-session irradiation at a dose of 8 Gy or more was associated with neurological change.

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