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Radiology for finals
🧠 Ischaemic Stroke
Loss of blood supply to brain tissue, usually due to thrombus or embolus.
Dense R MCA: Hyperdense MCA sign = acute thrombus.
Dense L MCA + ACA infarction with oedema: Shows early swelling, loss of grey–white differentiation.
🩸 Haemorrhagic Stroke
Bleeding within the brain parenchyma – high density area on CT.
Cerebellar haemorrhage: Risk of brainstem compression, often needs neurosurgical review.
🌊 Subarachnoid Haemorrhage (SAH)
Blood in basal cisterns/sulci, usually from ruptured aneurysm. "Thunderclap headache".
💉 Subdural Haematoma (SDH)
Crescent-shaped bleed between dura and arachnoid; usually due to torn bridging veins.
Large left acute + subacute SDH with midline shift: Emergency – may need burr hole or craniotomy.
🩸 Epidural Haematoma (EDH)
Biconvex/lentiform bleed, often after temporal bone fracture with middle meningeal artery injury.
💨 Pulmonary Embolism Imaging
CT Pulmonary Angiogram (CTPA): Saddle embolus at bifurcation of pulmonary arteries.
VQ Scan: Mismatched perfusion defects suggest PE when ventilation is preserved.
🫁 Cystic Fibrosis
Bronchiectasis, mucus plugging, and hyperinflated lungs.
🎯 Cannonball Metastases
Multiple round pulmonary metastases (renal, choriocarcinoma, thyroid, melanoma).
| The content on this website is provided for educational and informational purposes only to support exam preparation (e.g., MLA, MRCP, USMLE) and learning. This is NOT medical advice, diagnosis, treatment, or professional guidance. It does not replace consultation with a qualified healthcare professional, official guidelines (e.g., NICE, GMC, BNF), or supervised clinical practice. Always verify information with current, authoritative sources. Makindo and its contributors accept no liability for any reliance on this content, including errors, omissions, or any resulting harm, loss, or consequences. By using this site, you agree to these terms. |
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