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. Author manuscript; available in PMC: 2010 May 1.
Published in final edited form as: Magn Reson Imaging Clin N Am. 2009 May;17(2):315–338. doi: 10.1016/j.mric.2009.01.008

Figure 5.

Figure 5

Figure 5a. Normal physiologic pediatric hyperperfusion in a 10 year old patient. Mean GM CBF = 94 mL/100g tissue/min.

Figure 5b. Normal 40 year old PASL cerebral perfusion. Mean GM CBF = 70 mL/100g tissue/min.

Figure 5c. Normal 80 year old cerebral perfusion. Note the areas of apparent hypoperfusion in the anterior and posterior watershed territories. These are frequently encountered and reflect the increasingly slow transit times in the elderly. Mean GM CBF = 49 mL/100g tissue/min.