Reliability of Functional Magnetic Resonance Imaging in Patients with Brain Tumors: A Critical Review and Meta-Analysis

Metwali, Hussam; Raemaekers, Mathijs; Kniese, Katja; Kardavani, Babak; Fahlbusch, Rudolf; Samii, Amir

doi:10.1016/j.wneu.2019.01.194

Cited by 22 publications

(12 citation statements)

References 26 publications

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“…However, the major challenge in neurosurgery is to eradicate the tumor as much as possible while maximally preserving neurological functions. Various techniques have been introduced to achieve this goal, such as fluorescence-guided surgery, intraoperative ultrasound, intraoperative MRI combined with functional neuronavigation, and Raman spectroscopy (21)(22)(23)(24)(25)(26)(27).…”

Section: Discussionmentioning

confidence: 99%

Maximal safe resection of diffuse lower grade gliomas primarily within central lobe using cortical/subcortical direct electrical stimulation under awake craniotomy

Yao

Yang²,

Du³

et al. 2023

Front. Oncol.

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BackgroundDiffuse lower-grade glioma (DLGG) in the central lobe is a challenge for safe resection procedures. To improve the extent of resection and reduce the risk of postoperative neurological deficits, we performed an awake craniotomy with cortical-subcortical direct electrical stimulation (DES) mapping for patients with DLGG located primarily within the central lobe. We investigated the outcomes of cortical-subcortical brain mapping using DES in an awake craniotomy for central lobe DLGG resection.MethodsWe performed a retrospective analysis of clinical data of a cohort of consecutively treated patients from February 2017 to August 2021 with diffuse lower-grade gliomas located primarily within the central lobe. All patients underwent awake craniotomy with DES for cortical and subcortical mapping of eloquent brain areas, neuronavigation, and/or ultrasound to identify tumor location. Tumors were removed according to functional boundaries. Maximum safe tumor resection was the surgical objective for all patients.ResultsThirteen patients underwent 15 awake craniotomies with intraoperative mapping of eloquent cortices and subcortical fibers using DES. Maximum safe tumor resection was achieved according to functional boundaries in all patients. The pre-operative tumor volumes ranged from 4.3 cm3 to 137.3 cm3 (median 19.2 cm3). The mean extent of tumor resection was 94.6%, with eight cases (53.3%) achieving total resection, four (26.7%) subtotal and three (20.0%) partial. The mean tumor residue was 1.2 cm3. All patients experienced early postoperative neurological deficits or worsening conditions. Three patients (20.0%) experienced late postoperative neurological deficits at the 3-month follow-up, including one moderate and two mild neurological deficits. None of the patients experienced late onset severe neurological impairments post-operatively. Ten patients with 12 tumor resections (80.0%) had resumed activities of daily living at the 3-month follow-up. Among 14 patients with pre-operative epilepsy, 12 (85.7%) were seizure-free after treatment with antiepileptic drugs 7 days after surgery up to the last follow-up.ConclusionsDLGG located primarily in the central lobe deemed inoperable can be safely resected using awake craniotomy with intraoperative DES without severe permanent neurological sequelae. Patients experienced an improved quality of life in terms of seizure control.

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Section: Discussionmentioning

confidence: 99%

Maximal safe resection of diffuse lower grade gliomas primarily within central lobe using cortical/subcortical direct electrical stimulation under awake craniotomy

Yao

Yang²,

Du³

et al. 2023

Front. Oncol.

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“…While task-related fMRI has been used in many studies to investigate specific functions and/or brain areas ( Ebrahimzadeh et al, 2021a ), the resting-state fMRI approach is emerging to analyze spontaneous physiological fluctuations without the need for patient compliance, pathway integrity, or command following, which can be difficult in some patients ( Soddu et al, 2011 ; Cavaliere et al, 2018a ). fMRI has been applied to characterize brain functional connectivity in several physiological conditions ( Aiello et al, 2015 ; Marchitelli et al, 2016 ) and many diseases, including brain tumors ( Metwali et al, 2019 ), MS ( Pareto et al, 2018 ), AD ( Liu et al, 2008 ; Marchitelli et al, 2018 ), epilepsy ( Ebrahimzadeh et al, 2018b , 2019 , 2021a , 2021b ; Omidvarnia et al, 2019 ; Sadjadi et al, 2021 ), and also psychiatric disorders ( Mwansisya et al, 2017 ; Cavaliere et al, 2018b ; Figure 3 ).…”

Section: Primary Conceptsmentioning

confidence: 99%

Simultaneous electroencephalography-functional magnetic resonance imaging for assessment of human brain function

Ebrahimzadeh

Saharkhiz

Rajabion

et al. 2022

Front. Syst. Neurosci.

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Electroencephalography (EEG) and functional Magnetic Resonance Imaging (MRI) have long been used as tools to examine brain activity. Since both methods are very sensitive to changes of synaptic activity, simultaneous recording of EEG and fMRI can provide both high temporal and spatial resolution. Therefore, the two modalities are now integrated into a hybrid tool, EEG-fMRI, which encapsulates the useful properties of the two. Among other benefits, EEG-fMRI can contribute to a better understanding of brain connectivity and networks. This review lays its focus on the methodologies applied in performing EEG-fMRI studies, namely techniques used for the recording of EEG inside the scanner, artifact removal, and statistical analysis of the fMRI signal. We will investigate simultaneous resting-state and task-based EEG-fMRI studies and discuss their clinical and technological perspectives. Moreover, it is established that the brain regions affected by a task-based neural activity might not be limited to the regions in which they have been initiated. Advanced methods can help reveal the regions responsible for or affected by a developed neural network. Therefore, we have also looked into studies related to characterization of structure and dynamics of brain networks. The reviewed literature suggests that EEG-fMRI can provide valuable complementary information about brain neural networks and functions.

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“…Since from its development, fMRI technique has been applied to characterize brain functional connectivity in several physiological conditions (26, 27) and many diseases, including brain tumors (28), multiple sclerosis (29), Alzheimer's diseases (AD) (30, 31), epilepsy (32), but also psychiatric disorders (33, 34).…”

Section: Fmrimentioning

confidence: 99%

Simultaneous EEG-fMRI for Functional Neurological Assessment

et al. 2019

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The increasing incidence of neurodegenerative and psychiatric diseases requires increasingly sophisticated tools for their diagnosis and monitoring. Clinical assessment takes advantage of objective parameters extracted by electroencephalogram and magnetic resonance imaging (MRI) among others, to support clinical management of neurological diseases. The complementarity of these two tools can be now emphasized by the possibility of integrating the two technologies in a hybrid solution, allowing simultaneous acquisition of the two signals by the novel EEG-fMRI technology. This review will focus on simultaneous EEG-fMRI technology and related early studies, dealing about issues related to the acquisition and processing of simultaneous signals, and including critical discussion about clinical and technological perspectives.

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Reliability of Functional Magnetic Resonance Imaging in Patients with Brain Tumors: A Critical Review and Meta-Analysis

Cited by 22 publications

References 26 publications

Maximal safe resection of diffuse lower grade gliomas primarily within central lobe using cortical/subcortical direct electrical stimulation under awake craniotomy

Maximal safe resection of diffuse lower grade gliomas primarily within central lobe using cortical/subcortical direct electrical stimulation under awake craniotomy

Simultaneous electroencephalography-functional magnetic resonance imaging for assessment of human brain function

Simultaneous EEG-fMRI for Functional Neurological Assessment

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