I Cannot Provide Medical Images
I am unable to display, generate, or retrieve actual MRI images of brain tumors. As a text-based AI system, I do not have access to image databases or the capability to show visual content.
What I Can Provide Instead
For educational reference images of brain tumors, you should consult the following authoritative sources:
Institutional radiology teaching files – Most academic medical centers maintain extensive collections of de-identified brain tumor imaging 1
Published radiology atlases and textbooks – Standard neuroradiology references contain comprehensive imaging examples of all major tumor types 2
Online radiology databases – Resources like Radiopaedia.org provide peer-reviewed cases with imaging examples across all brain tumor subtypes 3
Multi-center imaging datasets – Research consortia have published anonymized DICOM files of gliomas, meningiomas, pituitary adenomas, and metastases for educational purposes 4
Key Imaging Characteristics by Tumor Type
While I cannot show images, I can describe the characteristic MRI appearances:
Intra-axial Tumors
Glioblastoma: Ring-enhancing lesion with central necrosis on T1 post-contrast imaging, surrounded by vasogenic edema on T2/FLAIR sequences 1
Low-grade astrocytoma: Infiltrative, non-enhancing T2/FLAIR hyperintense lesion without significant mass effect 1
Pilocytic astrocytoma: Cystic lesion with contrast-enhancing mural nodule, typically in posterior fossa or hypothalamic region 1
Extra-axial Tumors
Meningioma: Homogeneous dural-based enhancement with dural tail sign, CSF cleft between tumor and brain on T2/FLAIR 5, 6
Vestibular schwannoma: Enhancing mass in cerebellopontine angle cistern or internal auditory canal, best seen on heavily T2-weighted sequences 1, 7
Pituitary adenoma: Sellar/suprasellar mass with variable enhancement patterns on dedicated pituitary protocol imaging 1
For actual imaging examples, contact your institution's radiology department or access peer-reviewed online radiology education platforms.