On CT Scan: Acute Hemorrhage (within hours) Hyperdense (bright white) on non-contrast CT images. Subacute Hemorrhage (days to a week) May start to appear isodense (same density as surrounding tissue) due to clot retraction and hemoglobin breakdown. Chronic Hemorrhage (weeks to months) Hypodense (dark grey to black) relative to brain tissue. Sometimes calcifications can occur in chronic hemorrhages, appearing hyperdense. On MRI: T1-Weighted Images: Acute Hemorrhage (within hours): Generally isointense to hypointense (dark). Early Subacute Hemorrhage (2-3 days): Becomes hyperintense (bright) due to methemoglobin formation within red blood cells. Late Subacute Hemorrhage (1-2 weeks): Remains hyperintense due to extracellular methemoglobin. Chronic Hemorrhage (weeks to months): Hypointense due to hemosiderin (iron storage complex). T2-Weighted Images: Acute Hemorrhage (within hours): Hypointense (dark). Early Subacute Hemorrhage (2-3 days): May appear hyperintense to isointense. Late Subacute Hemorrhage (1-2 weeks): Hypointense rim due to hemosiderin with a hyperintense center. Chronic Hemorrhage (weeks to months): Hypointense due to hemosiderin.
thank you sir. it was concise and i understood well. thank your for sharing.
Wow sir its a wonderful video on ct brain
Thank you very much!
Very nicely explained presentation
Thanks for sharing such a informative video
Thank you very much for watching!
You are the best for me thanks for your knowledge
Most Welcome and thanks for watching!
Nice sir....tumors, abscess meningioma also upload ...
Thanks for the suggestions!
Shandaar sir🎉
Thank you very much!
Thanks, from Moscow 👍
Most Welcome!
Very nicely explained
Thanks for watching!
Very nice sir.....make vdo on fracture....vdo on pns...
Thanks for watching and thank you for your suggestions!
nice presentation ❤
Thanks for watching!
Sir kindly make video more on MRI related findings in infarct and hemorrhage
Yes, they will be uploaded in the future.
Can you please make a video on reporting of CTA brain? Elaborate on how to measure stenosis?
Thank you for the suggestion!
Very interesting 💞
Thank you for watching!
Very nice
Thanks for watching!
Hope more vedios on body CT ..🙏
Yes, more CT videos will be uploaded in the future!
Sir waiting for more basic information & cases..
Ct brain, abdomen, hrct
Thanks sir
very nice sir...thank u
Most Welcome!
Sir can u clarify does blood appear hyper dense in both CT and MRI?
On CT Scan:
Acute Hemorrhage (within hours)
Hyperdense (bright white) on non-contrast CT images.
Subacute Hemorrhage (days to a week)
May start to appear isodense (same density as surrounding tissue) due to clot retraction and hemoglobin breakdown.
Chronic Hemorrhage (weeks to months)
Hypodense (dark grey to black) relative to brain tissue. Sometimes calcifications can occur in chronic hemorrhages, appearing hyperdense.
On MRI:
T1-Weighted Images:
Acute Hemorrhage (within hours):
Generally isointense to hypointense (dark).
Early Subacute Hemorrhage (2-3 days):
Becomes hyperintense (bright) due to methemoglobin formation within red blood cells.
Late Subacute Hemorrhage (1-2 weeks):
Remains hyperintense due to extracellular methemoglobin.
Chronic Hemorrhage (weeks to months):
Hypointense due to hemosiderin (iron storage complex).
T2-Weighted Images:
Acute Hemorrhage (within hours):
Hypointense (dark).
Early Subacute Hemorrhage (2-3 days):
May appear hyperintense to isointense.
Late Subacute Hemorrhage (1-2 weeks):
Hypointense rim due to hemosiderin with a hyperintense center.
Chronic Hemorrhage (weeks to months):
Hypointense due to hemosiderin.
MCA ?
It stands for Middle Cerebral Artery
Thank