Radiology Notes

My notes during radiology residency, fellowship, and beyond…

Archive for the ‘neuro’ Category

Hypertrophic Olivary Degeneration

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Written by lmwong

May 8, 2012 at 12:56 pm

Posted in neuro, pediatrics

Status Marmoratus

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Status marmoratus is the presence in full-term infants of basal nucleus lesions resulting from acute total asphyxia. The lesions have a marbled appearance caused by neuronal loss and an overgrowth of myelin in the putamen, caudate, and thalamus.  – wiki

Link about HIE

Another good link about HIE

Written by lmwong

April 12, 2012 at 12:09 pm

Posted in basal ganglia, head, neuro

Tagged with

Etat Crible

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  • dilatation of perivascular spaces around cerebral arterioles in the basal ganglia of elderly people
  • associated with vascular parkinsonism


Written by lmwong

April 12, 2012 at 8:13 am

Posted in neuro

Persistent fetal origin of PCA

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The best picture of persistent fetal origin of the PCA I can find on the net…

  • PCA originates from ICA, rather than basilar artery
  • 15% of people

Written by lmwong

April 9, 2012 at 8:45 am

Posted in carotid, neuro

Categories and Causes of Hydrocephalus

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Pediatric specific causes of hydrocephalus…

Written by lmwong

March 25, 2012 at 10:48 am

Pituitary Hyperplasia

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  • convex superior margin of pituitary
  • upper limits of normal CC dimension
    • lactating women: 12 mm
    • menstruating women: 10 mm
    • males/postmenopause: 8 mm
    • infants: 6 mm
  • DDx: Turner, Klinefilters, hypothyroidis, Addison, end-organ failure.
Source: StatDX

Written by lmwong

November 3, 2011 at 2:31 pm

Posted in neuro, upper

Disc Disease Nomenclature

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Divide axial disc into 4 quadrants of 25%:

Focal Herniation = <25% [pic] (protusion type or extrusion type) [pic]

Broad based Herniation = 25-50% [pic]

Bulge = >50% normal disc circumference.

Symmetric Disc Bulging = 100% [pic]


Written by lmwong

January 5, 2011 at 4:00 pm

Posted in classification, neuro, spine