1503
99mTc - HMPAO was distributed in the territories of the ACA and MCA in the two patients who were treated with intraarterial infusion of papaverine from the C4 segment , but was distributed only to the territory of the ACA in four patients who were treated with intraarterial infusion of papaverine from the C1 segment at 1 ml / min .
 None
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
Answer:
 None