Active clinical trials for "Brain Neoplasms"

The overall goal of this study is to reveal the fundamental neural mechanisms that underlie comprehension across human spoken languages. An understanding of how speech is coded in the brain has significant implications for the development of new diagnostic and rehabilitative strategies for language disorders (e.g. aphasia, dyslexia, autism, et alia). The basic mechanisms underlying comprehension of spoken language are unknown. Researchers are only beginning to understand how the human brain extracts the most fundamental linguistic elements (consonants and vowels) from a complex and highly variable acoustic signal. Traditional theories have posited a 'universal' phonetic inventory shared by all humans, but this has been challenged by other newer theories that each language has its own unique and specialized code. An investigation of the cortical representation of speech sounds across languages can likely shed light on this fundamental question. Previous research has implicated the superior temporal cortex in the processing of speech sounds. Most of this work has been entirely carried out in English. The recording of neural activity directly from the cortical surface from individuals with different language experience is a promising approach since it can provide both high spatial and temporal resolution. This study will examine the mechanisms of phonetic encoding, by utilizing neurophysiological recordings obtained during neurosurgical procedures. High-density electrode arrays, advanced signal processing, and direct electrocortical stimulation will be utilized to unravel both local and population encoding of speech sounds in the lateral temporal cortex. This study will also examine the neural encoding of speech in patients who are monolingual and bilingual in Mandarin, Spanish, and English, the most common spoken languages worldwide, and feature important contrastive differences of pitch, formant, and temporal envelope. A cross-linguistic approach is critical for a true understanding of language, while also striving to achieve a broader approach of diversity and inclusion in neuroscience of language.

This first-in-human study will establish the human safety and radiation dosimetry of the system A amino acid transport substrate, (R)-3-[F-18]fluoro-2-methyl-2-(methylamino)propanoic acid ([F-18]MeFAMP), for positron emission tomography (PET) imaging of primary and metastatic brain tumors. This study will include 3 cohorts: healthy volunteers for whole body dosimetry estimates (n=6-8, Dosimetry Cohort), patients undergoing evaluation for recurrent high grade glioma after radiation therapy (n=10, high grade glioma (HGG) Cohort), and patients with brain metastases from extra-cranial solid tumors before and after radiation therapy (n=10, Metastasis Cohort). Exploratory assessment of the diagnostic accuracy of MeFAMP for distinguishing recurrent/progressive brain tumors from radiation-related treatment effects will also be performed for subsequent trial design. The study will complete accrual and safety assessment in the Dosimetry Cohort before recruiting for the HGG and Metastasis Cohorts.

The purpose of this study is to compare whether prophylactic cranial irradiation in patients with advanced triple negative breast cancer who had a response to first line chemotherapy could prolong brain-metastasis free survival.

Patients with solid cancers may develop cerebral metastases, requiring whole brain radiotherapy (WBRT). Furthermore, in several cases, a secondary course of WBRT might be required due to intracerebral recurrence and limited options for alternative treatments, besides optimal supportive care (OSC). There have been few reports on re-irradiation of the whole brain, but further evaluation especially of the optimal dose concept is warranted. Especially, the efficacy compared to OSC has to date not been evaluated. The present trial aims at evaluating the efficacy of a repeated WBRT with a total dose of 20 Gy in 10 fractions compared to OSC. Primary endpoint is time to WHO performance status (PS) deterioration to more than 3 (duration of functional independence). Secondary endpoints are quality of life, overall survival, radiation-induced toxicity and functional independence assessed by the Barthel Index of Activities of Daily Living (ADL)1.

The purpose of this study is to discover the potential convenience and ease of using a Magnetic Resonance Imaging (MRI) technique, named Magnetic Resonance Fingerprinting (or MRF), to achieve high-quality images within a short scan time of 5 min for viewing the entire brain. This is an advanced quantitative assessment of brain tissues. This method is being applied with IVIM MRI to be able to tell the difference between a brain with radiation necrosis and a brain with tumor recurrence. Participants will consist of individuals who have received radiation therapy in the past and were diagnosed with radiation necrosis, individuals with recurrent tumors, and healthy individuals who have no brain diseases and have not had radiation treatment to the brain. Participants will undergo an MRI scan at a one-time research study visit; no extra tests or procedures will be required for this research study. The primary objectives of this study are: To demonstrate the clinical feasibility of combining MRF with state-of-the-art parallel imaging techniques to achieve high-resolution quantitative imaging within a reasonable scan time of 5 min for whole brain coverage. To apply the developed quantitative approach in combination with IVIM MRI for differentiation of tumor recurrence and radiation necrosis.

The Quality of Life of patients treated with hadrontherapy is still limited. Two cohorts are established, they will be receiving specific standardized questionnaires to be evalutaed in their results.

The registry of this study was subjected to patients who were radiologically diagnosed with a non-malignant brain tumor at Seoul National University Hospital since 2001, and who have had magnetic resonance (MR) re-examination after first MR exam or will be re-examined because it was determined that immediate treatment would not be needed at the first visit to the hospital. In all MRs taken by patients, the date of imaging and the volume of the tumor are measured, and we aim to establish a natural growth history for non-malignant brain tumors.

Every new classification depends on its prognostic power and on the type of treatment given. With the rapid evolution of diagnostic methods and the advance in new treatments, there is much less reliable information available on how patients with newly defined brain tumour entities should be treated and what to expect from the current treatments. The goal is to determine whether the new 2021 WHO classification, based on cIMPACT-NOW recommendations, results in more homogeneous patient groups than the old 2016 classification. Furthermore, it will help derive provisional guidelines on how patients with these newly defined tumour entities are best treated. These recommendations will be based on the experience of EORTC investigators with chosen treatments and their experience as reported in this data collection report.

This trial studies how well dynamic susceptibility contrast-magnetic resonance imaging (MRI) works in determining radiation necrosis and tumor progression in participants with cancer that has spread to the brain and are being treated with radiation therapy. Diagnostic procedures, such as dynamic susceptibility contrast-MRI, may improve the ability to determine indeterminate post-treatment changes seen on imaging after radiation therapy.

To observe the quality of life (QOL) and to report on toxicity and outcome parameters after the (repeated) use of local ablative therapy (LAT) i.e. stereotactic radiotherapy (SRT) for patients with multiple (4-10) brain metastases