1769
In 19 of the 40 patients perfusion defects compatible with ischemia were detected on SPECT .
 Disease: ischemia
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Disease, Chemical 
Text: {0} 
 Entities: ischemia 
Answer:
 Disease: ischemia