The application of neuroimaging is helpful in every aspect of brain tumor treatment. bioinspired design Neuroimaging, thanks to technological progress, has experienced an improvement in its clinical diagnostic capacity, playing a critical role as a complement to clinical history, physical examinations, and pathological assessments. Functional MRI (fMRI) and diffusion tensor imaging are instrumental in enriching presurgical evaluations, facilitating superior differential diagnoses and optimizing surgical planning. Novel perfusion imaging, susceptibility-weighted imaging (SWI), spectroscopy, and new positron emission tomography (PET) tracers offer improved diagnostic capabilities in the often challenging clinical differentiation between treatment-related inflammatory changes and tumor progression.
In the treatment of brain tumors, high-quality clinical practice will be enabled by employing the most current imaging technologies.
For individuals with brain tumors, the highest quality clinical care can be achieved with the aid of the most up-to-date imaging technologies.
This article surveys imaging methods and corresponding findings related to typical skull base tumors, including meningiomas, and demonstrates how these can support surveillance and treatment decisions.
A readily available cranial imaging infrastructure has led to an elevated incidence of incidentally detected skull base neoplasms, warranting a deliberate assessment of whether observation or therapeutic intervention is necessary. The tumor's starting point determines the pattern of its growth-induced displacement and the structures it affects. A comprehensive investigation of vascular impingement on CT angiography, along with the pattern and scope of osseous invasion observed in CT imaging, contributes to improved treatment planning. Future research using quantitative imaging analyses, such as radiomics, may advance our understanding of the relationships between phenotype and genotype.
Integrating CT and MRI scans for analysis significantly enhances the diagnosis of skull base tumors, allowing for precise determination of their origin and the specification of the treatment's scope.
Through a combinatorial application of CT and MRI data, the diagnosis of skull base tumors benefits from enhanced accuracy, revealing their point of origin, and determining the appropriate treatment parameters.
The International League Against Epilepsy's Harmonized Neuroimaging of Epilepsy Structural Sequences (HARNESS) protocol is key to the analysis in this article of the essential role of optimal epilepsy imaging, in addition to the utilization of multimodality imaging in patients with drug-resistant epilepsy. buy Iclepertin This methodical approach details the evaluation of these images, specifically in the light of accompanying clinical information.
Rapid advancements in epilepsy imaging necessitate high-resolution MRI protocols for the assessment of newly diagnosed, long-standing, and treatment-resistant epilepsy. MRI findings related to epilepsy and their clinical ramifications are the subject of this review article. biological targets Preoperative epilepsy assessment gains significant strength from the implementation of multimodality imaging, especially in cases where MRI fails to identify any relevant pathology. To optimize epilepsy localization and selection of optimal surgical candidates, correlating clinical presentation, video-EEG data, positron emission tomography (PET), ictal subtraction SPECT, magnetoencephalography (MEG), functional MRI, and advanced neuroimaging methods, like MRI texture analysis and voxel-based morphometry, facilitates identification of subtle cortical lesions, particularly focal cortical dysplasias.
Understanding the clinical history and seizure phenomenology is central to the neurologist's unique approach to neuroanatomic localization. To identify the epileptogenic lesion, particularly when confronted with multiple lesions, advanced neuroimaging must be meticulously integrated with the valuable clinical context, illuminating subtle MRI lesions. Patients with lesions highlighted by MRI scans have a 25-fold increased likelihood of becoming seizure-free post-epilepsy surgery, relative to patients without such lesions.
The neurologist's unique function involves analyzing the patient's clinical background and seizure characteristics, which are fundamental to pinpointing neuroanatomical locations. Advanced neuroimaging and the clinical context combined have a profound effect on detecting subtle MRI lesions, specifically the epileptogenic lesion, in cases of multiple lesions. A 25-fold improvement in the likelihood of achieving seizure freedom through epilepsy surgery is observed in patients presenting with an MRI-confirmed lesion, in contrast to those without such a finding.
This article seeks to familiarize the reader with the diverse categories of nontraumatic central nervous system (CNS) hemorrhages, along with the diverse neuroimaging approaches employed in their diagnosis and treatment planning.
The 2019 Global Burden of Diseases, Injuries, and Risk Factors Study found that intraparenchymal hemorrhage accounts for a substantial 28% of the total global stroke burden. In the United States, hemorrhagic strokes comprise 13% of the overall stroke cases. The frequency of intraparenchymal hemorrhage is tied to age, rising substantially; thus, while blood pressure control programs are developed through public health measures, the incidence doesn't decrease as the populace grows older. A longitudinal study of aging, the most recent, discovered, via autopsy, intraparenchymal hemorrhage and cerebral amyloid angiopathy in a percentage range of 30% to 35% of the patients.
Head CT or brain MRI is crucial for the quick determination of CNS hemorrhage, specifically intraparenchymal, intraventricular, and subarachnoid hemorrhage. When hemorrhage is discovered on a screening neuroimaging study, the pattern of blood, combined with the patient's history and physical examination, guides the subsequent choices for neuroimaging, laboratory, and ancillary testing for causal assessment. Following the identification of the causative agent, the primary objectives of the treatment protocol are to control the growth of bleeding and to forestall subsequent complications like cytotoxic cerebral edema, brain compression, and obstructive hydrocephalus. Along with other topics, a concise discussion of nontraumatic spinal cord hemorrhage will also be included.
To swiftly identify central nervous system (CNS) hemorrhage, encompassing intraparenchymal, intraventricular, and subarachnoid hemorrhages, either a head computed tomography (CT) scan or a brain magnetic resonance imaging (MRI) scan is necessary. If a hemorrhage is discovered during the initial neuroimaging, the blood's configuration, coupled with the patient's history and physical examination, can help determine the subsequent neurological imaging, laboratory, and supplementary tests needed for causative investigation. Having determined the origin, the principal intentions of the therapeutic regimen are to mitigate the extension of hemorrhage and preclude subsequent complications, such as cytotoxic cerebral edema, brain compression, and obstructive hydrocephalus. Besides this, the subject of nontraumatic spinal cord hemorrhage will also be addressed in brief.
The imaging techniques used to evaluate patients with acute ischemic stroke symptoms are the subject of this article.
Acute stroke care experienced a pivotal shift in 2015, driven by the wide embrace of mechanical thrombectomy procedures. Further randomized, controlled trials in 2017 and 2018 propelled the stroke research community into a new phase, expanding eligibility criteria for thrombectomy based on image analysis of patients. This development significantly boosted the application of perfusion imaging techniques. After numerous years of standard practice, the controversy persists concerning the precise timing for this additional imaging and its potential to cause detrimental delays in urgent stroke interventions. For today's neurologists, a deep and comprehensive understanding of neuroimaging techniques, their applications, and the methods of interpretation are more crucial than ever.
Acute stroke patient evaluations often begin with CT-based imaging in numerous medical centers, due to its ubiquity, rapidity, and safety. A noncontrast head computed tomography scan alone is sufficient to inform the choice of IV thrombolysis treatment. CT angiography's remarkable sensitivity allows for the dependable detection of large-vessel occlusions, a crucial diagnostic capability. For improved therapeutic decision-making in certain clinical circumstances, advanced imaging methods including multiphase CT angiography, CT perfusion, MRI, and MR perfusion provide supplementary information. In all cases, the need for rapid neuroimaging and its interpretation is paramount to facilitate timely reperfusion therapy.
The evaluation of patients with acute stroke symptoms frequently begins with CT-based imaging in most medical centers, primarily because of its broad availability, rapid results, and safe operation. A noncontrast head CT scan provides all the necessary information for evaluating the potential for successful IV thrombolysis. CT angiography, with its high sensitivity, is a dependable means to identify large-vessel occlusions. In certain clinical instances, advanced imaging, including multiphase CT angiography, CT perfusion, MRI, and MR perfusion, can furnish additional data beneficial to therapeutic decision-making processes. To ensure timely reperfusion therapy, prompt neuroimaging and its interpretation are essential in all situations.
Essential to evaluating patients with neurologic diseases are MRI and CT, each technique exceptionally adept at addressing specific clinical questions. Although both of these imaging methodologies have impressive safety records in clinical practice resulting from concerted and sustained efforts, certain physical and procedural risks still remain, as detailed further in this report.
Safety concerns related to MR and CT procedures have been addressed with significant advancements in recent times. The use of magnetic fields in MRI carries the potential for dangerous projectile accidents, radiofrequency burns, and potentially harmful interactions with implanted devices, potentially leading to serious patient injuries and fatalities.