Here's some graphics that are really good that I got from the NY Times Article:

http://www.nytimes.com/2008/02/24/magazine/24wwln-diagnosis-t.html?ex=1204693200&en=d3ada576e437d173&ei=5070&emc=eta1

February 24, 2008
	Illustration by Jan Schwochow
Copyright 2008 The New York Times Company

February 21, 2008
	Steve Gschmeissner/Photo Researchers Doctors initially suspected a blood clot which can cause a stroke.
Copyright 2008 The New York Times Company

An aortic dissection.

Copyright 2008 The New York Times Company

Thanks NY Times for helping others with these great graphics.