1. 
   pneumoencephalography
   Radiographic visualization of the cerebral ventricles by injection of air or other gas. ... (12 Dec 1998) ...
   Found op http://www.mondofacto.com/facts/dictionary?pneumoencephalography
   
   
2. 
   pneumoencephalography
   (PEG) (noo″mo-әn-sef″ә-log´rә-fe) radiographic visualization of the fluid-containing structures of the brain after cerebrospinal fluid is intermittently withdrawn by lumbar puncture and replaced by air, oxygen, or helium.
   Found op http://www.encyclo.co.uk/local/21001
   
   
3. 
   Pneumoencephalography
   Pneumoencephalography (sometimes abbreviated PEG) is a medical procedure in which most of the cerebrospinal fluid is drained from around the brain and replaced with air, oxygen, or helium to allow the structure of the brain to show up more clearly on an X-ray image. It is derived from ventriculogra...
   Found op http://en.wikipedia.org/wiki/Pneumoencephalography
   
   
4. 
   pneumoencephalography
   Type: Term Pronunciation: nū′mō-en-sef′ă-log′ră-fē Definitions: 1. Radiographic visualization of cerebral ventricles and subarachnoid spaces by use of gas such as air; no longer used because of CT and MRI.
   Found op http://www.medilexicon.com/medicaldictionary.php?t=70304
   
   

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