JAs MedImaging

09/06/2026

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08/06/2026

08/06/2026

Happy New Week guys 🎉 🌟

A new week means new opportunities, fresh goals, and another chance to move closer to your dreams.

No matter what challenges lie ahead, stay focused, stay positive, and keep pushing forward. Every small step you take today brings you closer to success tomorrow.

May this week bring you productivity, progress, favor, and great achievements.

Happy New Week 🎉

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06/06/2026

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06/06/2026

Every MRI sequence reveals a different piece of the puzzle. Master the sequences, master the diagnosis

06/06/2026

Meningiomas arising from the coverings of the spinal cord are one of the two most common intradural extramedullary spinal tumors, representing 25-30% of all such tumors.

CLINICAL PRESENTATION
Despite usually being small, due to the confines of the spinal canal, spinal meningiomas can result in significant neurologic dysfunction including motor weakness, sensory deficits, myelopathy, and pain

LOCATION
Spinal meningiomas are not distributed evenly along the canal:

cervical spine: 15%

thoracic spine: 80%

lumbosacral spine: 5%

MRI HALLMARKS
✅ Well-circumscribed intradural extramedullary mass
✅ Iso- to hypointense on T1-weighted images
✅ Iso- to hyperintense on T2-weighted images
✅ Intense, homogeneous post-contrast enhancement
✅ Characteristic “dural tail” may be present
✅ Associated spinal cord compression and edema in advanced cases
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05/06/2026

What imaging feature most reliably differentiates a brain abscess from a necrotic glioblastoma on MRI?

05/06/2026

(brain abscess)
The dual rim sign is a characteristic MRI finding seen in pyogenic brain abscesses. It consists of two concentric rims surrounding the abscess cavity on susceptibility-sensitive and contrast-enhanced MRI sequences.

The dual or double rim sign is seen on MRI in approximately 75% of cerebral abscesses and is helpful in distinguishing an abscess from a glioblastoma.

Imaging Appearance
▪︎Inner rim: Thin, smooth, and hyperintense on T2-weighted images.

▪︎Outer rim: Hypointense on T2-weighted and susceptibility-weighted sequences due to free radicals produced by macrophages and granulation tissue.

▪︎Typically surrounds a centrally necrotic cavity that demonstrates restricted diffusion on DWI.
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05/06/2026

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04/06/2026

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