20293
Dual - source computed tomography coronary angiography was used to evaluate the existence and extent of coronary stenosis , which was considered significant if > 50 % narrowing of vessel lumen was detected . RESULTS After excluding uninterpretable segments attributable to motion artifacts , a total of 135 participants with NGR , 132 with prediabetes , and 134 with diabetes participated in data analysis .
 None
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 None