[Verse 1] Pull up the scan before you read the report, Localize it yourself — that's the standard we're taught Non-contrast CT first, let the density speak, Fresh blood sits hyperdense, fades over the week The hyperdense vessel sign — MCA occluded tight, Gray-white differentiation smearing overnight Cisterns effaced, the brainstem getting squeezed, Measure midline shift, nothing left to chance or leave [Chorus] ASPECTS scores the early infarct territory, Swirl sign in the clot means it's still actively bleeding, Mount Fuji means the air has crossed the falx between, Read every window — bone, brain, and in-between Don't outsource the localization, own the read, Density, diffusion, perfusion — every sequence feeds [Verse 2] T1 gives anatomy, T2 shows the fluid bright, FLAIR suppresses CSF to spotlight what's not right DWI lights up the acute stroke like a flare, Low ADC confirms restriction hiding there Lymphoma, medulloblastoma, epidermoid cysts — Hypercellular tumors clench the diffusion in their fists SWI catches microbleed and calcification trace, GRE blooms the hemosiderin scattered through the space [Chorus] ASPECTS scores the early infarct territory, Swirl sign in the clot means it's still actively bleeding, Mount Fuji means the air has crossed the falx between, Read every window — bone, brain, and in-between Don't outsource the localization, own the read, Density, diffusion, perfusion — every sequence feeds [Verse 3] Post-gadolinium enhancement — pattern tells the tale, Dural tail of meningioma riding on the veil, Leptomeningeal hugs the sulci, dural lifts away, Rim-enhancing abscess versus necrotic glioblast array MR spectroscopy decodes the metabolite choir, NAA drops when neurons suffer and expire, Choline climbs in tumors cycling membrane fast, Two-hydroxyglutarate marks IDH-mutant contrast DTI maps the tracts before you plan your corridor, Functional MRI protects the language on the floor [Bridge] Catheter DSA — six vessels, full anatomy named, Balloon occlusion tests the collaterals before they're claimed Wada puts one hemisphere pharmacologically to sleep, Superselective runs before embolization's leap PET with amino acid tracers delineates tumour spread, SISCOM overlays ictal SPECT — localizes seizure thread Intraoperative ultrasound, iMRI to catch the shift, Five-ALA fluorescence shows residual tumour adrift ICG videoangiography confirms the vessel flow, FLOW 800 quantifies what naked eyes won't know Frame-based registration anchors with bone-fixed truth, Frameless drifts with brain shift — account for that uncouth [Chorus] ASPECTS scores the early infarct territory, Swirl sign in the clot means it's still actively bleeding, Mount Fuji means the air has crossed the falx between, Read every window — bone, brain, and in-between Don't outsource the localization, own the read, Density, diffusion, perfusion — every sequence feeds
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