2444
CONCLUSIONS : ChromaFlo - enhanced IVUS demonstrates colorized blood flow inside the vessel lumen , which is helpful in distinguishing echolucent disease from luminal blood flow and can also be used to perform peripheral interventions in patients with renal failure or allergy , avoiding the use of contrast media .
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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