id	keyword
american_scientific_journal-5651	antenna
american_scientific_journal-5651	slot
american_scientific_journal-5651	microwave
american_scientific_journal-5651	imaging
american_scientific_journal-5651	vivaldi
american_scientific_journal-5651	tumor
american_scientific_journal-5651	head
american_scientific_journal-5651	figure
american_scientific_journal-5651	brain
american_scientific_journal-5651	sar