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The feasibility of combining fused filament fabrication and salt leaching technique was established for fabricating the radiopaque porous SMPU having the required characteristics for embolization , which can be explored by the Interventional Radiologist .
 feasibility, fused filament fabrication, salt, leaching, fabricating, porous, be
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: manufacturing standard, machanical property, manufacturing process, material, engineering feature, process parameter, machine or equipment, application, process characterization, enabling technology, biomedical, concept or principle 
Text: {0} 
Answer:
 feasibility, fused filament fabrication, salt, leaching, fabricating, porous, be