QUESTION-1:

What’s Following CT / MRI and Angiography Images represented of:

Aneurysm.

Venous Angioma.

Dural Sinus thrombosis.

Correct Answer: Dural Sinus thrombosis.

Answer : the previous Angiography image show attenuated and loss of signal of superior sagittal sinus. MRI Image shows hyperintense signal on Dural Venous confluence on T2W and Hypointense signal on T1WI. CT image show hypodensity within the Posterior Course of Superior Sagittal Sinus.
There is no findings of Angioma or Aneurysm.

DeoxyHb is T2 dark.
Enhancing thrombus
MetHb and flow are bright on TOF MRV
Look for:
- Hyperdensity on NC CT
- T1 flow void
- Heterogeneous T2 signal
- Secondary signs of venous infarction

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Correct Answer Explanation