4010
This machine drift , which was not associated with a rise in water phantom temperature and did not consistently correlate with estimated x - ray tube heat , could result in a significant overestimation of regional cerebral blood flow ( rCBF ) for a xenon / CT rCBF protocol involving 5 - 7 sequential scans obtained at 1 - min interscan intervals .
 None
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
 Entities:  
Answer:
 None