1427
All patients received a total dose of 16 Gy in 2 - Gy daily fractions with 5 - 6 MeV photons based on computerized treatment planning in individual head mask fixation .
 Anatomy: head
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Anatomy 
Text: {0} 
 Entities: head 
Answer:
 Anatomy: head