Showing posts with label Neuro. Show all posts
Showing posts with label Neuro. Show all posts

Tuesday, November 1, 2011

Breast Cancer Brain Met

Sag T1 without gad
Axial FLAIR


 Axial and Coronal T1 post gad

DWI

Clival Osteomyelitis, Cerebral Abscess and Empyema.

CECT - Empyema
CECT - Right Temporal lobe abscess


CT - Bone window: Lytic lesion in the clivus. 

Left sphenoid opacification

Sagittal T1 - Clival lesion

FLAIR: High signal lesion in left sphenoid and clivus

 FLAIR
 DWI - Restriction

Wednesday, October 26, 2011

Left MCA stroke

Dense left MCA Sign

Abrupt cutoff on CTA

Subtle left insular ribbon sign

Friday, October 7, 2011

Trauma - Petrous Bone Fracture

Traumatic SAH

Left anterior SDH

Longitudinal petrous bone fracture, with opacification of the mastoid air cells, and pneumocephalus.

Friday, September 30, 2011

Tuesday, September 6, 2011

Arachnoid Cyst

Axial T2
Axial Flair

Axial T1


Axial T1 post gad

DWI


Most important differential:
Epidermoid Cyst (sebaceous cyst).

Differentiating points:
1. Arachnoid cyst shows no restriction on DWI, Epidermoids highly restrict!
2. Arachnoid cysts lose signal on FLAIR (iso to CSF), while epidermoids will be hyper to CSF on FLAIR.

Nail Gun accident..

81 y o M, shot self with nailgun.



Entry wound in right temporal bone, exit in left.



What's your Dx?

CT

Post contrast CT


Axial T1

Sag T1
Axial Flair




DWI

ADC