56
Iodine - 123 was satisfactorily imaged only with the MEC and pinhole collimators , which in turn yielded MTF values comparable to those measured for 99mTc .
 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