2011 Communication Computed Tomography Radiograph 
Radiology Cafe
FEBRUARY 5, 2019
Photoprint from radiograph by W.K. 3) In the early twentieth century, it was a common goal for investigators to try to find a way to separate the superimposed shadows that were recorded when a complex structure was shown on a radiograph. (3) 3) This is what is known as tomography. This is now known as ‘Hand mit Ringen’. (1)
Northwestern EM
JANUARY 6, 2020
The paired arteries are connected by the anterior communicating artery (ACommA) early in their course which is the final connection completing the circle of Willis (Figure 7). As noted prior, these PCAs connect with the ipsilateral posterior communicating arteries from the anterior circulation (Figure 7). 9,10,12] Figure 5.
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