Diagnosis: Acute stroke Axial noncontrast CT images of the brain (A, B) show a dense right middle cerebral artery (MCA) sign (yellow arrow, A) and subtle loss of definition in…
Diagnosis: Dural venous sinus thrombosis and hemorrhagic infarctions Axial unenhanced CT images (A, C, D; image B is not shown in these annotated images) show a right posterior temporal hemorrhage…
Diagnosis: Diffuse axonal injury Unenhanced axial CT images (A–C) show multiple small foci of hemorrhage (arrows) in the right pons (A), right basal ganglia, left subinsular region (B) and left…
Diagnosis: Intracranial abscess due to sinusitis Axial contrast-enhanced CT (A) shows partial opacification in the left sphenoid sinus (yellow arrow) and a ring-enhancing abscess (red arrows) in the left middle…
Diagnosis: Vertebral artery dissection Axial CTA with IV contrast (A, B) shows decreased caliber of the right vertebral artery (arrow) in comparison to the left, with soft tissue density encasing…
Diagnosis: Flexion distraction injury at L1 Sagittal CT of the thoracolumbar spine demonstrates a transversely oriented fracture through the spinous process of L1 (yellow arrow). No other fractures are evident….
Diagnosis: Aneurysmal subarachnoid hemorrhage Noncontrast head CT (left image) shows diffuse subarachnoid hemorrhage, more prominent on the left (yellow arrow). Coronal CTA MIP reconstruction (middle image) and lateral view of…
Diagnosis: Left parietal epidural hematoma with overlying fracture Noncontrast axial CT in brain window (left image) demonstrates a hyperdense extra-axial collection over the left parietal convexity (yellow arrow). A small…
Diagnosis: Herpes simplex encephalitis Axial FLAIR (left image) and T2-weighted (middle image) MR images show edema and swelling of the right temporal lobe (arrows) with minimal mass effect upon the…
Diagnosis: Flexion teardrop fracture at C7 Sagittal and axial CT images (left and middle images) demonstrate a small anterior teardrop fragment (yellow arrow) and retropulsion of the C7 vertebral body…
