CT Scan Brain Normal Vs Ischemic Stroke Images | Non-Contrast Hyperacute/Acute/Chronic Infarction

CT Scan Brain Normal Vs Ischemic Stroke Images | Non-Contrast Hyperacute/Acute/Chronic Infarction
*Cases:
Intro - 0:00
Ischemic Stroke- Immediate (Hyperdense MCA Sign) - 0:12
Hyperacute - 4:29
Acute - 7:48
Subacute - 9:35
Chronic - 10:56
Hyperacute:
Loss of Gray-white matter differentiation
Hypodense cortex
Gyral effacement - Flattening of gyri
Disappearance of sulci
Acute:
Hypodense areas
Cytotoxic cerebral edema (Swelling)
Mass effect
Midline Shift
Sulcal Disappearance
Subacute:
Reduction of swelling
CT Fogging Effect- Hypodense areas become isodense
Normal Appearance
Cortical petechial hyperdense hemorrhages
Chronic:
Gliosis - Hypodense areas
Encephalomalacia due to liquefactive necrosis - hypodense
The hypodense areas have similar density to CSF
Ex vacuo dilatation of the lateral ventricle adjacent to the chronic infarct

[@wajidali4356]

Wow sir its a wonderful video on ct brain

[@DrSamsImagingLibrary]

Thank you very much!

[@ReemMohammed-cb2no]

You are the best for me thanks for your knowledge

[@DrSamsImagingLibrary]

Most Welcome and thanks for watching!

[@shabanalakhair2984]

Very nicely explained presentation
Thanks for sharing such a informative video

[@DrSamsImagingLibrary]

Thank you very much for watching!

[@drbrajeshben567]

Shandaar sir🎉

[@DrSamsImagingLibrary]

Thank you very much!

[@pavanmeena6979]

Very nicely explained

[@DrSamsImagingLibrary]

Thanks for watching!

[@Super-3333]

Can you please make a video on reporting of CTA brain? Elaborate on how to measure stenosis?

[@DrSamsImagingLibrary]

Thank you for the suggestion!

[@rahaafzaly4149]

Very nice

[@DrSamsImagingLibrary]

Thanks for watching!

[@sabakhanam5998]

Very interesting 💞

[@DrSamsImagingLibrary]

Thank you for watching!

[@DrSuryaPrakasaRao]

nice presentation ❤

[@DrSamsImagingLibrary]

Thanks for watching!

[@user-lc7zw5de2d]

Thanks, from Moscow 👍

[@DrSamsImagingLibrary]

Most Welcome!

[@dr.samirtawshikar9232]

Very nice sir.....make vdo on fracture....vdo on pns...

[@DrSamsImagingLibrary]

Thanks for watching and thank you for your suggestions!

[@shabanalakhair2984]

Sir kindly make video more on MRI related findings in infarct and hemorrhage

[@DrSamsImagingLibrary]

Yes, they will be uploaded in the future.

[@pavanmeena6979]

Hope more vedios on body CT ..🙏

[@DrSamsImagingLibrary]

Yes, more CT videos will be uploaded in the future!

[@Razvi12]

Sir waiting for more basic information & cases..
Ct brain, abdomen, hrct
Thanks sir

[@dr.samirtawshikar9232]

very nice sir...thank u

[@DrSamsImagingLibrary]

Most Welcome!

[@afnantalat9262]

Sir can u clarify does blood appear hyper dense in both CT and MRI?

[@DrSamsImagingLibrary]

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.

[@rahaafzaly4149]

MCA ?

[@DrSamsImagingLibrary]

It stands for Middle Cerebral Artery

[@rahaafzaly4149]

Thank