Brain Cancer Diagnostics Market Forecast to 2028 - COVID-19 Impact and Global Analysis By Diagnostic Type (Imaging Test [MRI, CT Scan, PET, and Others], Lumbar Puncture, Biopsy, Molecular Testing, Platform and Services [Sample Slide, Autosampler Unit, Solutions & Platform, and Services], Cerebral Arteriogram, Neurological & Hearing Tests/Neurocognitive Assessments, Electroencephalography (EEG), and Others); Cancer Type (Acoustic Neuroma, Astrocytomas, Craniopharyngiomas, Ganglioneuromas, Glioblastoma Multiforme, Meningiomas, Ependymomas, Oligodendroglioma, Low-Grade Tumors, and Others); End User (Hospitals, Specialty Clinics, Ambulatory Surgical Centers, Diagnostic Centers & Research Institutes, and Others); and Tumor Size (0.2 cm3 to 100 cm3, 101 cm3 to 200 cm3, and Above 200 cm3)